Remote 💻 Development Jobs

Major responsibilities:

• Develop clean, efficient, and reusable Python code with a focus on scalable, AI-native architecture
• Design and implement backend services and application components as part of a distributed system
• Participate in frontend development using React (modern, hooks-based approach)
• Integrate third-party APIs and internal microservices
• Design and optimize database interactions (PostgreSQL, MySQL, MongoDB, Redis)
• Create and maintain technical documentation: APIs, architecture decisions, modules, and development guidelines
• Take part in architectural discussions and technical decision-making

We'd love to hear from you if you have:

• 5+ years of experience in Python development (FastAPI, async services)
• Hands-on experience with React and modern frontend practices
• Experience contributing to MVP development while keeping long-term scalability and architecture in mind
• Solid understanding of system design and API integrations
• Experience working with AI / LLM-based systems (strong advantage)
• Confidence working in environments with a high level of autonomy
• Proactive mindset: ability to ask the right questions and propose solutions
• Experience communicating with stakeholders and cross-functional teams
• English at B2 level or higher

Nice to have, but not critical:

• Experience in the Healthcare domain, especially with US-based products or regulations
• Experience with secure authentication flows, including SSO and token-based access
• Deep knowledge of Kotlin, including strong understating of coroutines and API integration

Backend Engineer

Job title: Backend Engineer

About the role

We are seeking a Senior Backend Engineer with strong expertise in Node.js / Typescript to design, build, and maintain scalable backend systems. This role is responsible for delivering high-quality features end-to-end, collaborating closely with product and project managers, and continuously improving the codebase through thoughtful refactoring.

Responsibilities

• Design, develop, and deliver backend features using Node.js / Typescript, ensuring high performance and scalability
• Collaborate with product and project managers to clarify requirements and translate them into technical solutions
• Own tasks end-to-end, from implementation through testing, deployment, and monitoring
• Identify, troubleshoot, and resolve bugs and production issues in a timely manner
• Continuously refactor and improve existing code to enhance maintainability, performance, and reliability
• Review pull requests, provide constructive feedback, and uphold code quality and engineering standards
• Write clean, well-documented, and testable code following best practices
• Participate in system design and architecture discussions, contributing to long-term technical decisions
• Monitor system performance and proactively address bottlenecks or reliability issues
• Collaborate with cross-functional teams (frontend, QA, DevOps) to ensure smooth delivery of features
• Mentor other engineers and contribute to improving team processes and development workflows

Tech Stack

• Back-end heavy: Node.js, TypeScript, MySQL, REST + GraphQL
• Front-end: Vue.js (nice to have)
• Deployment: AWS, Docker/Kubernetes (nice to have)

Skills & Qualifications

• 6+ years of professional experience (primarily in Node.js and Vue.js)
• Able to work US timezone or 4+ hours overlap with mainland US
• Able to take ownership and initiative on features / problems

Benefits

• Fully remote position
• $80k – $180k (based on location, experience and seniority)
• There is a significant quarterly bonus tied to meeting sprint goals
• Paid holidays
• Personal Time-off of 15 days at start
• Engineering team retreat
• US Employees - Healthcare Insurance (Medical, Dental, Vision) - 401k Plan

What you'll get to do

• Continuously develop and improve our desktop products
• Plan, implement, and roll out new features
• Maintain and modernize application components
• Improve the stability and reliability of our software
• Lead a development team, run performance reviews and team meetings
• Drive team productivity and effectiveness
• Collaborate with product managers to prioritize and plan work

Required skills

• Strong knowledge of C++17 or C++20 and solid understanding of object-oriented programming principles
• Hands-on experience with the Qt framework
• Understanding of Agile/Scrum methodologies and strong people management skills: delegation, team-building, and mentoring
• 3+ years of experience as a software developer
• 1+ years of team leadership experience is a plus, but not required
• Bachelor’s degree in Computer Science or a related technical field

What we offer

• Confirmed employment from day one
• Remote work from anywhere in the world or at our office
• Flexible work schedule
• Corporate events and team-building activities
• A personalized approach to professional growth and development within the company
• A team of professionals ready to mentor and share their knowledge and experience

System Analyst (AI) - Job Description

What you'll do

Design and specify internal services for AI agents and the tooling that powers the organization’s internal AI transformation. This is primarily a technical/systems analysis role — translating business needs into clear specifications for AI-agent services, internal automation tools, and AI-enabled workflows — combined with a readiness to take on project coordination and delivery-management tasks when needed. The role also involves owning multiple parallel initiatives across different teams, ensuring alignment with business goals, timelines, and technical constraints.

Current Technology Stack

Node.js, Nest.js, JS/TS, TypeORM, PostgreSQL, AWS, React, Next.js, SCSS, Java, plus LLM/agent frameworks (e.g. MCP), prompt/agent orchestration tools, vector databases, LangChain or other agent SDKs, internal automation and workflow platforms, AI coding assistants (Claude Code, Cursor, etc.)

Responsibilities

• Translate business and product needs into system specifications for AI-agent services and internal tooling;
• Design end-to-end logic for AI-agent services, including integrations with internal systems and third-party AI/LLM platforms;
• Define API interactions, data structures, and integration requirements for AI-agent and automation services;
• Document workflows, data flows, and system behavior using structured methodologies and diagramming tools;
• Support engineering teams during implementation; clarify requirements and validate delivered functionality against intent, ensuring system behavior matches business requirements and defined specifications;
• Analyze existing internal processes and propose where AI agents/automation can increase efficiency, reliability, and scalability;
• Assist in defining data requirements and basic SQL/analytical queries to support reporting on AI initiative outcomes;
• Plan and track delivery of AI-agent services and AI-transformation initiatives; manage timelines, dependencies, and risks;
• Own multiple parallel initiatives across different teams, ensuring alignment with business goals, timelines, and technical constraints;
• Manage several concurrent workstreams (features, integrations, internal tools), maintaining clear prioritization, dependency tracking, and risk visibility;
• Coordinate cross-functional efforts between engineering, product, data, and operations to roll out AI tools internally, acting as a coordination point that consolidates stakeholder inputs into structured, actionable requirements;
• Decompose high-level business needs into well-defined artifacts: system specifications, process flows, API contracts, and task breakdowns for engineering teams;
• Monitor execution and deadlines across streams, proactively identifying bottlenecks, resolving blockers, and adjusting plans to maintain delivery commitments;
• Implement structured tracking of initiatives (roadmaps, timelines, dependencies, risks), ensuring transparency and predictability of delivery;
• Run status reporting and stakeholder communication to keep initiatives on track.

Requirements

• Strong experience as a System Analyst, Technical Product Specialist, or similar technical role;
• Strong system analysis skills including requirements definition, process mapping, and system/architecture understanding;
• Experience specifying integrations with APIs and third-party or internal services;
• Ability to document complex business logic and system behavior clearly for engineering teams;
• Familiarity with AI/LLM tools and agent frameworks, or strong interest and ability to learn them quickly;
• Vector databases basics knowledge;
• Working knowledge of SQL and ability to perform basic data queries;
• Comfortable taking on project/program management tasks — planning, prioritization, tracking dependencies and risks — alongside analysis work;
• Strong interest in AI tools, automation, and organizational transformation through AI;
• Excellent English communication skills;
• Strong cross-team coordination skills.

Nice to have

• Experience with LangChain or other agent SDKs;
• Experience coordinating cross-functional technical initiatives with multiple stakeholders.

What We Offer

• Stability, development, participation in the future unicorn's growth;
• Remote work from anywhere in the world, with a schedule aligned with GMT+3;
• Competitive salary in EUR/USDT;
• Unlimited vacation;
• Birthday presents;
• Compensation for the purchase of necessary technical devices for the work;
• Paid sick leaves.

How to apply

Feel free to send your CV to vkolesnikov@tangem.com

Senior Data Engineer

Remote

Full Time

Position overview

We are looking for a Senior Data Engineer with deep expertise in Python and SQL. You will design, implement, and optimize data pipelines and ETL processes, ensuring high performance, scalability, and reliability. This is a fully remote position with flexible working conditions.

What you'll do

• Develop and optimize ETL workflows using Python and SQL.
• Design and implement scalable data pipelines for processing various data sources.
• Work with relational databases (e.g., PostgreSQL, Oracle) to ensure efficient data storage and retrieval.
• Optimize SQL queries and Python scripts for performance and maintainability.
• Implement robust error handling, logging, and monitoring for data processing pipelines.
• Collaborate with cross-functional teams to integrate and manage data sources.

Requirements

• 5+ years of experience in Data Engineering.
• Expert-level Python and SQL skills – ability to write efficient, scalable, and maintainable code.
• Strong experience in designing ETL processes and working with large datasets.
• Solid understanding of database performance tuning and query optimization.
• Experience with data modeling and schema design.
• Familiarity with cloud storage solutions (Azure, AWS, or GCP).
• Strong problem-solving skills and ability to work independently.
• Nice to have: Experience with PySpark, orchestrators and knowledge of CI/CD for deployment process automation.

Benefits

• Velvetech is in the TOP 5 development companies in Illinois, USA
• You have FLEXIBLE working conditions and a COOPERATIVE environment
• Competitive salary
• Many CHALLENGING and exciting projects with new opportunities and learning
• GROWTH opportunities, skills and competencies improvement, and professional certification
• In-company TRAINING (English, Software / DevOps / Project management / Design / Business)

Our team

We are a friendly team of 150+ professionals where everyone is able to achieve high results and grows professionally not only due to their own knowledge and skills but also with the support of colleagues. Values that we highly appreciate are high performance, responsibility, respect, and loyalty. In order to have a highly motivated team, Velvetech invests in their people, additional education, certification, and others. You choose your career path and we are here to support you!

People work together in harmony, encouraging each other to continuously learn, progress, and pursue perfection. Our employees enjoy working as we turn challenges into advantages to share success with each other.

You have a chance to become a part of a friendly and professional team that creates robust software solutions to deliver maximum value to our international clients! Start your journey today!

Senior iOS Developer (Swift/Objective-C) - Remote Position

Key Responsibilities

• Design and develop native iOS applications leveraging Swift 5.9+ and Objective-C frameworks.
• Create clean, maintainable code adhering strictly to SOLID, KISS, and DRY principles.
• Collaborate with cross-functional teams to conceptualize, design, and ship new features.
• Identify performance bottlenecks and resolve bugs to enhance application responsiveness.
• Maintain code quality and organization through meticulous Git version control practices.
• Implement responsive user interfaces that align precisely with design specifications.
• Integrate RESTful APIs and third-party services into mobile applications seamlessly.
• Perform thorough peer code reviews and provide constructive feedback to team members.
• Stay current with the latest iOS development trends, tools, and methodologies.
• Contribute to technical documentation and knowledge sharing within the team.

Required Skills & Qualifications

• 3+ years of professional iOS application development experience with a demonstrable portfolio.
• Strong proficiency in both Swift (5.0+) and Objective-C programming languages.
• Comprehensive understanding of iOS SDK, UIKit, and contemporary iOS features.
• Practical application of SOLID, KISS, and DRY principles in mobile development projects.
• Experience with Git for version control and collaborative development workflows.
• Proficiency with Xcode IDE and iOS simulators for efficient development cycles.
• Knowledge of RESTful APIs and JSON data structure parsing.
• Understanding of concurrent programming paradigms and memory management techniques.
• Bachelor's degree in Computer Science, Software Engineering, or equivalent practical experience.
• Excellent problem-solving capabilities coupled with meticulous attention to detail.

Nice to Have

• Experience with SwiftUI for creating modern, fluid user interfaces.
• Familiarity with Core Data frameworks for sophisticated local data persistence.
• Expertise writing comprehensive Unit and UI tests using XCTest framework.
• Understanding and implementation of architectural patterns (MVC, MVVM, VIPER, Clean Swift).
• Experience with dependency managers such as CocoaPods and Swift Package Manager.
• Knowledge of CI/CD pipelines specific to iOS application development.
• App Store submission and review process experience.
• Contributions to open-source projects or personal GitHub repositories.
• Proficiency with Reactive programming paradigms (RxSwift or Combine).
• Understanding of BLE connectivity, push notification systems, and background processing.

Why Join Us

Become part of our forward-thinking team and contribute to innovative projects while enjoying the freedom to work from anywhere across the globe. We foster a collaborative environment where you can expand your technical expertise, work with cutting-edge technologies, and make a substantial impact. Our flexible work arrangements, competitive compensation package, and commitment to professional growth make this an exceptional opportunity for passionate iOS developers seeking to advance their careers in mobile technology.

Responsibilities

• Develop microservices using Python, FastAPI, Gunicorn, and related technologies
• Deploy services on Google Cloud using Google Cloud CLI
• Collaborate with cross-functional teams to translate business requirements into technical solutions
• Write clean, maintainable, and efficient code following best practices
• Organize CI/CD processes for seamless automated deployments
• Work with DevOps and infrastructure teams to optimize the deployment pipeline
• Conduct code reviews and provide constructive feedback to team members

It will be a plus

• Ability to manage stress effectively
• High level of accountability and commitment

Our expectations

• Proficiency in Python programming (8+ years)
• Knowledge of and experience with Voice, SIP, and WebRTC
• Language Proficiency: English at B2-C1 level, Russian at B2 level
• Experience designing and developing APIs (FastAPI preferred)
• Strong knowledge of microservice architecture and design patterns
• Proficiency in databases like Postgres, Redis, and MySQL
• Experience with containerization (Docker, Docker Compose)
• Familiarity with Google Cloud Platform (GCP), including deployment and service management
• Knowledge of Lex-Yacc Parser and Linux is a plus
• Familiarity with Google Kubernetes Engine (GKE) is a bonus
• Strong understanding of CI/CD processes and tools
• Excellent problem-solving and debugging skills
• Strong communication and collaboration skills for effective teamwork
• Location: any, except Russia and Belarus

Why Join us

At Mad Devs, you will be part of a company that values creativity, strategic thinking, and continuous improvement. You will work on meaningful projects that impact millions of users worldwide alongside a talented and supportive team. By joining our team, you will have the opportunity to make a real impact, grow your career, and contribute to developing cutting-edge solutions in the world of backend engineering.

Employees benefits

• Flexible working hours
• Remote-first culture
• Long-term projects
• Salary in dollars
• Professional communities
• Onsite business trips
• Training budget
• Paid conferences

Applying for jobs should be easy. I am here to simplify the hiring process and set you up for success. Feel free to send me a message via e-mail.

Senior ML Research Scientist – AI & Generative Recommendation (m/f/d)

What’s in It for You?

At adjoe, you’re not here to just close JIRA tickets, you’re helping build the infrastructure behind one of the most impactful platforms in adtech. The systems you work on will reach hundreds of millions of users and power billions of decisions every day.

• Go Big. Own projects with impact on 770M users and push adtech boundaries.
• Move Fast. Ship solutions multiple times a day, learn from results, and keep momentum.
• Be Direct. Solve problems openly and collaborate across teams.
• Thrive Together. Grow with a diverse, global team of people from over 40 different countries that learn from each other.
• Have Fun. Celebrate wins, enjoy daily victories, and bring your energy.

Your Mission & Who We Are Looking For:

PhD or equivalent research depth, with a production track record. You have a PhD in CS, Statistics, Math, or Physics, or an MSc with extensive industry research, and publications in top-tier venues like SIGIR, KDD, NeurIPS, or ICLR. You've spent 4+ years building large-scale recommender systems in high-throughput environments: AdTech, e-commerce, or social.

You translate research into production, not just prototypes. You distill SOTA research into robust, production-ready code optimized for sub-millisecond latency. At adjoe, that means architecting multi-stage recommendation pipelines, Generative Retrieval, Deep Ranking, and Re-ranking, serving millions of requests across a stack built on 770 million users' behavioral data.

Deep expertise in PyTorch and large-scale model optimization. You have hands-on experience with high-concurrency optimization, model quantization, and distillation, the engineering side of getting large generative models to run under extreme production constraints, not just in research environments.

Content understanding and embeddings are core to your work. You research and develop information-rich user and ad embeddings using unsupervised and generative approaches, directly improving the quality of predictions across both Playtime and adjoe Ads.

Raises the technical bar around them. You lead architectural debates, mentor junior scientists, and drive the team's research direction without needing a roadmap handed to you.

What’s the Team & Tech Stack?

The Data Science Research team builds foundational ML representations and advanced AI capabilities that enhance both Playtime and adjoe Ads. It leverages generative approaches to deliver systems such as high-dimensional user embeddings, general content understanding, and sequential recommendation. The stack focuses on deep learning and heavy data throughput: PyTorch and [Ray/Hugging Face] for training/fine-tuning foundation models, Trino and Athena for querying massive user-behavior data lakes, and dedicated GPU infrastructure.

Location & Benefits

We welcome applications from talent worldwide and provide relocation support to Hamburg, Germany for those ready to join our team.

What You'll Do

• Translate research into production-ready components for multi-stage recommendation pipelines, Generative Retrieval, Deep Ranking, and Re-ranking.
• Develop and optimize embeddings and content understanding models.
• Lead architectural discussions, mentor scientists, and shape the research direction.
• Collaborate with cross-functional teams to deploy scalable AI capabilities in production environments.
• Work with large-scale data from hundreds of millions of users to improve system performance and user experience.

Who You Are

• PhD in CS, Statistics, Math, Physics, or equivalent research depth with production experience; 4+ years in large-scale recommender systems.
• Proficient in PyTorch; experience with model optimization, quantization, distillation, and deploying generative models in production.
• Strong background in embeddings, content understanding, and unsupervised/generative approaches.
• Proven ability to drive architecture, mentor others, and operate without a fixed roadmap.

Requirements

• PhD or equivalent research depth with production track record (or MSc with extensive industry research).
• 4+ years building large-scale recommender systems in high-throughput environments.
• Deep expertise in PyTorch and large-scale model optimization (quantization, distillation).
• Experience with Generative Retrieval, Deep Ranking, Re-ranking, and multi-stage pipelines.
• Strong knowledge of embeddings and content understanding.

Qualifications

• Publications in top-tier venues (SIGIR, KDD, NeurIPS, ICLR) or equivalent industry impact.
• Ability to translate research into production-ready code with low latency.
• Mentorship and leadership in research direction.

What You’ll Do

• Build systems that extract structured data from emails, documents and other unstructured sources.
• Enrich migrated client, landlord, tenant and property records with useful information from communication history.
• Develop solutions that summarise a client’s full email history and surface the most relevant context inside Dwelly.
• Build production NLP / ML-backed backend services that work reliably on messy real-world data.
• Improve retrieval and ranking systems using approaches such as RAG, BM25, embeddings, hybrid search and reranking.
• Define quality metrics, evaluation datasets and feedback loops for extraction, summarisation and retrieval systems.
• Build Python backend services and APIs using frameworks such as FastAPI, Django, Flask or similar.
• Integrate ML and LLM workflows into production systems with clear error handling, observability and maintainability.
• Work closely with engineering, product and operations teams to turn real business problems into scalable automation systems.

What We’re Looking For

• Strong Python backend engineering experience.
• Experience with API frameworks such as FastAPI, Django, Flask or similar.
• Production experience with NLP, ML, information extraction, retrieval, ranking or summarisation systems.
• Ability to take research ideas or prototypes into production.
• Strong understanding of evaluation, metrics and quality measurement for ML / LLM systems.
• Practical experience with retrieval systems such as RAG, BM25, embeddings, hybrid search or reranking.
• Comfortable working with messy, ambiguous or incomplete real-world data.
• Ability to build reliable services around ML workflows, including monitoring, testing and failure handling.
• Good understanding of LLM limitations, hallucination risks and safe user-facing AI.
• Strong ownership mindset and ability to work independently in ambiguous product areas.

Nice to Have

• Experience building AI or LLM agents.
• Experience with document understanding, email parsing, entity extraction or CRM enrichment.
• Experience with LLM evaluation, prompt/version management or human-in-the-loop review workflows.
• Experience with vector databases or search infrastructure.
• DevOps or CI/CD experience for deploying ML-backed services.
• Experience testing ML systems on complex production datasets.
• Experience with typed programming languages such as TypeScript, Java, C#, C++, Kotlin, Scala or similar.

What Success Looks Like

• Useful information can be extracted from emails and documents with measurable quality.
• Client communication histories can be summarised safely, clearly and with relevant context.
• Retrieval and ranking systems improve over time through evaluation and feedback.
• ML and LLM workflows are reliable, observable and production-ready.
• Operations and product teams can trust the outputs and understand when human review is needed.
• Unstructured data from acquired agencies becomes usable inside Dwelly faster and with less manual work.

Compensation & Benefits

• Fully remote role.
• Competitive compensation based on experience and impact.
• Opportunity to work on high-leverage automation systems at the intersection of backend engineering, applied ML, data and real operational workflows.
• Competitive salary with the potential for equity options based on performance, recognising exceptional contributions to our integration success.

Senior Backend Engineer: Offsite Search Optimisation

Location: Remote

Employment Type: Full time

Department: Engineering

What you’ll do

No explicit “What you’ll do” section provided in the content. Please provide the duties or allow me to summarize based on the responsibilities implied by the role and requirements.

Responsibilities

• Build and own production backend services in Python.
• Work with data-heavy systems (analytics, metrics, logging).
• Monitor, alert, and debug user-facing systems.
• Ship maintainable software with tests, code reviews, and incremental delivery.

Requirements

• Strong experience building and owning production backend services in Python.
• Strong SQL skills and confidence working with data-heavy systems (analytics, metrics, logging).
• Experience with monitoring, alerting, and debugging user-facing systems.
• Ability to ship maintainable software (tests, code review, incremental delivery).

Nice to have

• Knowledge of SEO fundamentals.
• Experience with APIs & auth (OAuth2, GA4 and Google Search Analytics API).
• Experience working with non-structured data (referrers, canonical URLs, page types).
• Experience building data integrations between products.
• Understanding of ETL/ELT workflows on PySpark.

Benefits

• Unlimited vacation time - encourage at least 3 weeks per year.
• Fully remote team - choose where you live.
• Work from home stipend.
• Apple laptops provided for new employees.
• Training and development budget refreshed annually.
• Maternity & Paternity leave for qualified employees.
• Collaborative environment to grow and make an impact.
• Base salary: $80k–$120k USD, depending on qualifications.
• Stock options in addition to base salary.
• Regular team offsites.

Who you are

No explicit “Who you are” section provided beyond the requirements and nice-to-haves. Please provide if available.

Responsibilities

• Develop embedded software for ZeroAvia's controller platform.
• Produce requirements, design, implementation, and tests for software components.
• Ensure software life cycle data produced are in accordance with development processes and procedures.
• Perform hardware/software integration for debugging, verification, and release of software.
• Contribute improvements to internal procedure and standards.

Required Experience & Qualifications

• Bachelor’s degree in related engineering discipline (or equivalent knowledge and experience).
• 8+ years of experience in software development life cycle, at least 5 years of which within aerospace (DO-178B/C) or other safety-critical domain.
• Proficiency in embedded C and familiarity with MISRA C standards.
• Experience in bare-metal programming with microcontrollers.
• Knowledge of software architecture and/or software testing methods.
• Perform requirement analysis and flow down to software and detail design.

Desirable

• Knowledge of communication protocols such as CAN, UART, SPI, and I²C.
• Proficiency with requirements management and configuration management tools.
• Experience of model-based development using MATLAB Simulink.
• Working knowledge with ARM microcontrollers.
• Understanding of control systems development.
• Basic understanding of electronics and ability to read schematics.
• Experience in certification programmes and in compliance demonstrations.
• Experience in scripting languages like Python would be an added advantage.

Why Join Us?

We want to help you be your best self, at work and at home, that’s why we provide our employees with…

• Private health and dental care – get access to services and support when you need them. Add your family members too.
• Mental health support – enjoy a culture where positive mental health is front of mind with our trained Mental Health First Aiders, Employee Assistance Programmes and wellbeing support.
• Free lunch and healthy snacks – keeping you fuelled up so you can help us deliver the technology of the future
• Sports, games and culture clubs – connect and keep fit with other ZeroAvians by joining one of our clubs – such as, running, cycling, padel, trivia, theatre and gardening.

We also offer

• Stock options – so you can share in our success.
• 25 days holiday, plus public holidays and additional days awarded for long service – to help you manage your work-life balance.
• Free EV Charging and membership in our EV Club.
• Salary Sacrifice Schemes for EV Club, Curry's Tech and Cycle to Work
• Weekly Spot Bonuses to reward excellence.
• Income Protection and Legal Support for peace of mind.
• Relocation Support to make your move seamless.

Senior QA Engineer (Data Integration)

What we offer you

• Flexible working hours and a hybrid work format
• Well-equipped offices for focused and collaborative work
• A global, distributed team of 500+ professionals
• Learning, mentorship, and long-term career growth
• Relocation support and private health insurance
• Performance-based bonuses
• TradingView Premium access
• Regular team events and company-wide meetups

Responsibilities

• Define data quality requirements and metrics aligned with business and engineering needs
• Participate in the design of data schemas and data models
• Onboard and integrate new data sources
• Maintain and evolve data documentation
• Monitor data quality in production - alerts, dashboards, and data SLA tracking
• Investigate and resolve data incidents across the full data lifecycle
• Collaborate with engineers, product managers, and analysts to clarify requirements and drive quality improvements
• Expand automated data quality coverage

What makes you the perfect fit

• 2+ years in data engineering, analytics, DataOps or a Data Quality role
• Data profiling and analysis - identifying anomalies, drift, and duplicates
• Clear understanding of data quality dimensions - completeness, accuracy, consistency, and timeliness
• Experience with data pipelines (e.g. ETL/Streaming/batch)
• Experience handling and managing data incidents end-to-end
• Solid understanding of JSON and YAML formats
• Experience working with APIs and backend services (integration troubleshooting, data feed ingestion)
• Strong ability to read and analyze application logs
• Comfortable with Linux command line
• Experience using CI/CD tools (Jenkins or GitLab) as a practitioner
• English proficiency B2+ (reading and written communication)

Will be a plus

• Experience in finance or trading domain
• Familiarity with TradingView as a product
• Domain knowledge in investments - brokers, crypto exchanges, or financial markets
• Experience with AI tools and workflows
• Experience with Kafka or streaming data pipelines
• Familiarity with data catalog and metadata management tools
• Experience with data observability platforms
• Python for automated data quality checks

Team description

About the team: Hi! We're Datafeeds | Integration team. Right now we're growing our team and looking for a Middle Data Integration Engineer who will take ownership of data quality end-to-end. If you care about data as a product and want to work where quality actually matters, we'd love to talk.

Senior iOS Developer (Swift/Objective-C) - Remote Position

Key Responsibilities

• Design and develop native iOS applications leveraging Swift 5.9+ and Objective-C frameworks.
• Create clean, maintainable code adhering strictly to SOLID, KISS, and DRY principles.
• Collaborate with cross-functional teams to conceptualize, design, and ship new features.
• Identify performance bottlenecks and resolve bugs to enhance application responsiveness.
• Maintain code quality and organization through meticulous Git version control practices.
• Implement responsive user interfaces that align precisely with design specifications.
• Integrate RESTful APIs and third-party services into mobile applications seamlessly.
• Perform thorough peer code reviews and provide constructive feedback to team members.
• Stay current with the latest iOS development trends, tools, and methodologies.
• Contribute to technical documentation and knowledge sharing within the team.

Required Skills & Qualifications

• 3+ years of professional iOS application development experience with a demonstrable portfolio.
• Strong proficiency in both Swift (5.0+) and Objective-C programming languages.
• Comprehensive understanding of iOS SDK, UIKit, and contemporary iOS features.
• Practical application of SOLID, KISS, and DRY principles in mobile development projects.
• Experience with Git for version control and collaborative development workflows.
• Proficiency with Xcode IDE and iOS simulators for efficient development cycles.
• Knowledge of RESTful APIs and JSON data structure parsing.
• Understanding of concurrent programming paradigms and memory management techniques.
• Bachelor's degree in Computer Science, Software Engineering, or equivalent practical experience.
• Excellent problem-solving capabilities coupled with meticulous attention to detail.

Nice to Have

• Experience with SwiftUI for creating modern, fluid user interfaces.
• Familiarity with Core Data frameworks for sophisticated local data persistence.
• Expertise writing comprehensive Unit and UI tests using XCTest framework.
• Understanding and implementation of architectural patterns (MVC, MVVM, VIPER, Clean Swift).
• Experience with dependency managers such as CocoaPods and Swift Package Manager.
• Knowledge of CI/CD pipelines specific to iOS application development.
• App Store submission and review process experience.
• Contributions to open-source projects or personal GitHub repositories.
• Proficiency with Reactive programming paradigms (RxSwift or Combine).
• Understanding of BLE connectivity, push notification systems, and background processing.

Why Join Us

Become part of our forward-thinking team and contribute to innovative projects while enjoying the freedom to work from anywhere across the globe. We foster a collaborative environment where you can expand your technical expertise, work with cutting-edge technologies, and make a substantial impact. Our flexible work arrangements, competitive compensation package, and commitment to professional growth make this an exceptional opportunity for passionate iOS developers seeking to advance their careers in mobile technology.

Senior MLOps Engineer (f/m/d)

Location: Hamburg

Employment Type: Full time

Department: adjoe

adjoe builds the technologies behind mobile apps growth and monetization. With our core product Playtime Arcade, we've become the global leader in rewarded advertising, an ad unit built on a simple premise: users earn real in-app rewards for engaging with new apps. The result is one of the most effective value exchanges in adtech, connecting advertisers and publishers with over 770 million users annually.

Architecting Intelligence to Optimize 200M+ Daily Decisions

As the intelligence core of our engineering organization, our Data Science team doesn't just deploy models, we engineer the fundamental decision engine that powers our platform. At a scale of 770 million users and 100,000+ predictions per second, we are solving a multi-objective optimization problem that balances user incentives, advertiser ROI, and long-term platform health in real time.

Our architecture is built on a 1PB+ behavioral data lake, providing the high-fidelity input necessary to train deep learning models that predict individual user engagement with precision. We aren't just optimizing clicks, we are dynamically calculating optimal reward structures to sustain a global value exchange.

Engineered for performance, our stack leverages Tensorflow and PyTorch for model training, NVIDIA Triton to achieve sub-100ms inference. We own the full ML lifecycle from high-level research and feature engineering to deployment and A/B experimentation. Here, you will find the autonomy, the data depth, and the massive scale required to solve the most complex optimization challenges in the adtech ecosystem.

Your Mission & Who We Are Looking For:

• MLOps at production scale. You have 5+ years in MLOps or ML Engineering with a track record of deploying and maintaining models in high-traffic environments. At adjoe, that means keeping models fresh and performant across 2 billion+ daily requests, where decay in model quality directly impacts user experience and advertiser KPIs.
• Continuous Training & Automation. You design and manage CT pipelines and scheduling logic to ensure models stay current as new data flows in. You understand the end-to-end ML lifecycle well enough to know when a model needs retraining.
• Observability is part of the system, not an afterthought. You build monitoring systems that catch data skew, distribution shifts, and performance decay in production, using frameworks like Evidently, with alerts integrated directly into production pipelines.
• Low-latency serving under heavy load. You wrap deep learning models into production APIs and lead load testing to validate performance at scale. You're proficient in serving frameworks like Triton, ONNX Runtime, or TF Serving, and use deep-dive resource profiling to guide efficiency and optimization.
• ML platform ownership. You work with infrastructure teams to architect the ML platform, automated access to CPU/GPU clusters via Kubernetes, Docker, and orchestration tools like Airflow or Kubeflow, so data scientists can focus on models, not infrastructure.
• Plus: AdTech industry background. You understand how ad delivery systems work and the business logic underneath.

🌎 We welcome applications from talent worldwide and provide relocation support to Hamburg, Germany for those ready to join our team.

What’s in It for You?

• Go Big. Own projects with impact on 770M users and push adtech boundaries.
• Move Fast. Ship solutions multiple times a day, learn from results, and keep momentum.
• Be Direct. Solve problems openly and collaborate across teams.
• Thrive Together. Grow with a diverse, global team of people from over 40 different countries that learn from each other.
• Have Fun. Celebrate wins, enjoy daily victories, and bring your energy.

We welcome applications from people who will contribute to the diversity of our company.

Apply for this Job

We're looking for a proactive IT Project Manager to strengthen our team

We’re looking for a proactive IT Project Manager with mid-to-senior-level experience who knows how to take ownership, build processes from scratch, keep tasks moving, and can communicate easily with both technical and business teams.

You’ll help coordinate tasks, manage timelines, and keep processes transparent for everyone involved. If you want to have a direct impact on the product, work with a strong distributed team, and help improve our PM practices, come join us!

What you'll get to do

Initiation and planning

• Project setup from scratch: turn informal requirements into a clear project scope and structured technical requirements document
• Estimation and delivery: plan deadlines and team capacity, create delivery plans and back them up with clear reasoning

Process and development management

• End-to-end project management: lead IT projects through every stage of the project lifecycle
• Scrum facilitation: coordinate a distributed team of desktop, web, and QA specialists; run scrum ceremonies including dailies, retrospectives, and planning sessions
• Jira administration: manage tasks, set up workflows, automated processes, and dashboards that work well for you and the team

Control, risks, and analytics

• Risk management: proactively handle dependencies and incidents, and escalate potential blockers before they become bigger problems
• Transparency and metrics: analyze process efficiency using metrics like Velocity, Cycle Time, and others; prepare and present clear project status updates
• Technical focus: communicate easily with developers and understand the technical context, including architecture, APIs, and client-server interaction

Communication

• Stakeholder management: manage business expectations, help teams find practical solutions when resources and timelines are tight, and keep processes fully transparent
• Project status control: always know the current status of the team’s projects and be able to quickly highlight what’s going well and what needs attention
• PM culture development: take part in improving Project Management practices across the company

Required skills

• IT project management experience: 3–4+ years as a Project Manager. Experience with complex distributed systems, desktop products, and web products would be a plus
• Strong technical background: understanding of client-server interaction, APIs, and architecture basics. You won’t need to write code, but you should understand what developers are talking about
• Strong scrum skills: hands-on experience building processes from scratch and working with team efficiency metrics
• Advanced Jira skills: ability to do more than move cards around – you know how to customize workflows and set up automated processes
• Soft skills: strong facilitation, conflict management, and stakeholder expectation management skills. Ability to stay focused when handling multiple tasks concurrently

What we offer

• Confirmed employment from day one
• Remote work from anywhere in the world or at our office
• Flexible work schedule
• Corporate events and team-building activities
• A personalized approach to professional growth and development within the company
• A team of professionals ready to mentor and share their knowledge and experience

Who you are

Proactive IT Project Manager with the ability to take ownership, build processes from scratch, and communicate effectively with both technical and business teams.

Tech stack

Experience with client-server interaction, APIs, architecture basics; Jira administration and Scrum practices.

Network Infrastructure Engineer

Fenix24 - United Kingdom (Remote)

Job Duties & Responsibilities

• Assist in the design and deployment of network solutions for project-based work, including Cisco switches, Fortinet and Palo Alto firewalls, and SD-WAN.
• Gather requirements and assist in scoping project engagements, collaborating with senior engineers and the PMO.
• Provide support for customers' existing network environments, including troubleshooting and maintenance.
• Participate in M&A activities by assisting in the integration of networks, systems, and applications.
• Implement network security measures, including firewall policies, VPNs, and Wi-Fi 802.1x.
• Collaborate with senior engineers and the PMO to execute network projects and implement network changes.
• Assist in cloud networking tasks in Azure and AWS, including connectivity and security configurations.
• Maintain network documentation, including configurations and topology diagrams.
• Stay updated with industry trends and provide support and recommendations to clients.

Qualifications

• 3-5 years of experience in network support, configuration, and troubleshooting.
• Experience working as a consultant, supporting clients with technical network solutions.
• Hands-on experience with Cisco network switches, Fortinet and Palo Alto firewalls, and SD-WAN technologies.
• Basic understanding of cloud networking in Azure and AWS.
• Experience with M&A network integration support.
• Strong problem-solving skills and ability to manage both project-based work and ongoing support tasks.
• Certifications such as CCNA, CompTIA Network+, or equivalent experience.
• Strong communication and organizational skills.

Benefits & Perks

• Internal and external learning & development opportunities, including career advancement
• Scheduled & flexible PTO programs
• Family friendly programs- Care packages
• Regular team building events
• Competitive compensation & benefits including:
• Private health insurance
• Mental health and wellness programmes
• Company-matched pension scheme
• Life insurance and income protection insurance
• Monthly fitness/gym membership allowance

Who You Are / Team Description

The Network Infrastructure Engineer will support both project-based work and the ongoing maintenance of customers' existing network environments, including M&A activities. This role requires hands-on experience with Cisco network switches, firewalls (Fortinet, Palo Alto), SD-WAN, and Wi-Fi 802.1x. The Network Engineer will work closely with senior engineers and the Project Management Office (PMO) to support network projects, gather requirements, help scope project engagements, and ensure the security and performance of client networks. This is a remote opportunity based within the UK.

QA Engineer - Job Description

Project: Hero Wars: Dominion Era

What you'll do

• Join a Technical Stream that builds and supports internal tooling and technical strategy for Hero Wars: Dominion Era (HWDE).
• Work on the engineering side of quality: integrations, backend-heavy changes, internal tools, environments, and complex system behaviors.
• Support an upcoming launch in a new region, ensuring game and web components work correctly with region-specific integrations (payments/automation), connectivity constraints, and edge cases.
• Collaborate with a strong, mature team with deep product context; manage legacy systems and tech debt while improving quality and processes.

About our stack

• Backend: PHP (custom framework)
• Database: PostgreSQL
• Frontend: TypeScript, Haxe
• Internal tools: Unity editor
• Infrastructure: Kubernetes, configuration evolving
• Delivery: GitLab CI, Argo CD
• Automation: Python in some areas

Requirements

• 3+ years of QA experience (manual testing) in web/game products or complex systems
• Strong practical skills with DevTools, Postman, understanding of web testing and integrations
• Confidence with SQL (PostgreSQL), ability to validate data and investigate issues via queries
• Comfortable working with command line and basic log analysis
• Understanding of the development/testing lifecycle and ability to work with test documentation
• Basic understanding CI/CD and how releases/environments are delivered

Nice to have

• Experience with automation on any language (especially Python)
• Exposure to Docker / Kubernetes / cloud (AWS) or strong interest in infrastructure side
• Experience working in roles close to SDET (tooling, test utilities, pipelines, integration tests)
• Knowledge of GitLab CI and release workflows
• Using AI for work tasks

Benefits & perks

• Healthcare: Medical care program (including dental) or medical care compensation; options to cover family members when working from Cyprus, Armenia, or Kazakhstan
• Work-life balance: Paid vacation days and sick leave; flexible office/home work options
• Sports: Access to activities like yoga, football, volleyball
• Relocation assistance for joining official locations
• Skills improvement: Online English courses; language lessons for Cyprus/Armenia; participation in game jams, hackathons, conferences
• Events: Strategic sessions, workshops, parties, contests, and more
• Community & ESG: Support for local communities and social initiatives

Work format

In one of the company's offices in Armenia, Kazakhstan, Cyprus, or remotely.

Team & environment

Join a strong and mature team with deep product context; comfortable with legacy systems and tech debt while improving quality and processes.

Description

TuxCare is a subsidiary of CloudLinux. It offers a portfolio of security solutions for Linux and open-source software aimed at enterprise organisations. With TuxCare, enterprises can automate live vulnerability patching, minimise downtime, keep their applications secure and compliant, and get support from a team that knows Linux security best — covering the most popular Linux distributions, end-of-life systems, programming languages, and much more.

For more information, visit our website: https://tuxcare.com/

One of TuxCare's key products is Endless Lifecycle Support (ELS), which enables organisations to securely continue using Linux distributions and software languages that have reached end of life or no longer receive standard security updates. ELS delivers vulnerability patches for unsupported versions of CentOS, Ubuntu, Debian, Oracle Linux, as well as for runtimes and frameworks such as PHP, Python, Spring, Angular/AngularJS, Django, and Flask.

More details: https://tuxcare.com/endless-lifecycle-support/

Product documentation: https://docs.tuxcare.com/els-for-runtimes/

We're looking for a Head of QA who can transform a technically capable but operationally strained QA team into a strategic, AI-powered quality engineering function. This is the opportunity to fundamentally rethink how we assure quality at scale — across Linux package testing, multi-distro coverage, and a growing CI/CD automation footprint.

Work is fully remote, with flexible hours, where you can plan your day and work from anywhere in the world.

What You'll Own

1. Strategy & Architecture:
   • Define key product quality metrics and build a strategic multi-quarter QA roadmap
   • Execute the defined QA roadmap and hold the team accountable to it
   • Expand test coverage systematically: prioritise by risk and customer impact, not by noise
   • Own the test system infrastructure and the resource strategy
   • Drive adoption of AI tooling across the QA function — from test generation to failure triage
2. People & Execution:
   • Build a team culture focused on heavy AI and automation usage
   • Restructure on-duty rotation so it's equitable and sustainable
   • Mentor SDETs from "test writers" to "product quality engineers" who own subsystems end-to-end
   • Create clear career growth paths within the QA function
   • Collaborate closely with developers; translate quality signals into actionable development priorities

Tech Stack

• Test Framework — pytest, Python, Playwright (emerging)
• Scripting — Bash / Shell (package environments, multi-distro testing)
• CI/CD — Jenkins, GitLab CI (migration target)
• Infrastructure — OpenNebula, KubeVirt, Docker, Ansible, S3/Ceph
• Reporting — Allure Framework, Redash / ClickHouse
• Communication — Slack, Jira

Requirements

Must Have

• 5+ years in test automation; 2+ years leading a QA team of 3+ engineers
• Deep experience with Linux-based product testing: RPM/DEB packages, systemd, multi-distro matrix
• Strong Python skills — the entire test framework and tooling is Python
• Proven track record of dramatically improving test reliability and coverage metrics
• Experience building or integrating AI/ML into QA workflows — not theoretical, show what you shipped
• CI/CD pipeline architecture experience (Jenkins Pipelines; GitLab CI migration is upcoming)
• Fluent in Linux CLI and shell scripting — package environments require comfort at the system level
• English — Upper-Intermediate (B2) or higher

Must Demonstrate

• Strategic thinking: you see the system, not just the ticket; you plan quarters, not just sprints
• Delegation instinct: you build processes that distribute and track ownership, not a single point of failure
• Data-driven execution: you measure, set targets, and hold teams accountable to metrics
• Strategic initiative: you proactively propose and drive improvements — you don't wait for problems to be assigned
• Automation bias: if a human does something daily (like a nightly report), it should be automated — period

Nice to Have

• VM orchestration or cloud infrastructure testing experience
• Experience testing security patches and package updates, including kernel-level patches for Linux distributions
• Experience with multi-distro Linux testing matrices at scale
• Hands-on experience with Linux packaging ecosystems (RPM, DEB, APK), repository management, and security advisory formats (OVAL, CSAF)
• Hands-on understanding of vulnerability lifecycle: CVE intake, patch validation, regression testing of security fixes, advisory generation (OVAL / CSAF) — you'll be testing patches, not features

Benefits

What's in it for you

• A focus on professional development
• Interesting and challenging projects
• Fully remote work with flexible working hours — schedule your day and work from any location worldwide
• Paid 24 days of vacation per year, 10 days of national holidays, and unlimited sick leave
• Compensation for private medical insurance
• Co-working and gym/sports reimbursement
• Budget for education
• The opportunity to receive a reward for the most innovative idea that the company can patent

Senior Software Engineer (Python) – Truework Team

What you’ll do

• Be an independent individual contributor who can solve problems and deliver high-quality solutions with minimal/high-level oversight and a high level of ownership
• Bring a customer-centric, product-oriented mindset to the table - collaborate with customers and internal stakeholders to resolve product ambiguities and ship impactful features
• Partner with engineering, product, design, and other stakeholders in designing and architecting new features
• Experimentation mindset - autonomy and empowerment to validate a customer need, get team buy-in, and ship a rapid MVP
• Quality mindset - you insist on quality as a critical pillar of your software deliverables
• Analytical mindset - instrument and deploy new product experiments with a data-driven approach
• Deliver performant, reliable, scalable, and secure code capable of supporting Truework’s significant scale
• Monitor, investigate, triage, and resolve production issues as they arise for services owned by the team

What you bring

• 5+ years of software development experience
• Bachelor degree (or equivalent education/training)
• Proficiency in Python and Javascript (or similar languages/frameworks)
• Experience developing RESTful APIs
• Strong communication and documentation skills
• A strong sense of ownership from feature design through production release
• A desire to collaborate with external stakeholders
• An eagerness to learn, collaborate, improve, innovate, and have fun

What you’ll get

• A fast-paced and collaborative environment
• Learning and development allowance
• Competitive compensation and opportunity for advancement
• 100% medical, dental, and vision coverage
• Up to $25K reimbursement for fertility, adoption, and parental planning services
• Flexible PTO policy
• Monthly wellness stipend, home office stipend

Team description / tech stack

Most of the work is backend-oriented. The Truework team operates within Checkr and helps develop and maintain the platform used by major lenders. The role is open to candidates from a broad set of roles (full stack, backend, QA engineers, SREs, etc.) if you meet the requirements. Proficiency in Python and Javascript is expected; RESTful APIs are a core focus.

Android Engineer

About Us

Chess.com is one of the largest gaming sites in the world and the #1 platform for playing, learning, and enjoying chess.

We are a team of 600+ fully remote people in 60+ countries working hard to serve the global chess community. We are here to support 250M+ chess players worldwide with the best possible product, content, and tools to serve the community!

We are a tech company. A gaming company. A content company. And we do it all with passion and commitment to the game. Above all we prize our mission-driven, flat, life-celebrating, no-corporate culture, and we look forward to meeting you and learning more about what you can bring to the team.

About the Role

The Android Developer role is critical to expanding Chess.com's mobile platform capabilities and supporting the company's growth. This position directly impacts millions of chess players worldwide by developing and maintaining high-quality Android applications that deliver seamless gaming experiences. The role ensures Chess.com maintains its position as the #1 chess platform globally through technical excellence, innovation, and cross-platform code efficiency across the mobile ecosystem.

What you'll do

• Develop and maintain Chess.com's flagship Android application to serve 185M+ global chess players with high-performance, scalable mobile experiences
• Design and implement shared codebase architecture across our Android ecosystem to maximize development efficiency and code reusability
• Collaborate cross-functionally with design, product management, data analytics, coaching, and titled player teams to translate business requirements into technical solutions and enhance user experience
• Optimize application performance and user experience through code reviews, performance monitoring, and implementation of Android best practices
• Contribute to technical architecture decisions for mobile platform scalability and maintainability as the user base grows
• Maintain and improve development workflows to support rapid iteration and deployment cycles in a fully distributed team environment

Preferred Skills

• 3+ years of professional Android development experience with production applications
• Expert-level proficiency in Kotlin and Android SDK development
• Hands-on experience with Android Architecture Components including ViewModels, Room, and Navigation
• Proficiency with asynchronous programming using Coroutines or RxJava
• Experience with dependency injection frameworks including Dagger 2 or Hilt
• Proven experience with Jetpack Compose for modern UI development
• Demonstrated ability to work effectively in fully distributed/remote teams with strong written and verbal communication skills
• Track record of taking ownership of features and projects from conception to delivery
• Experience shipping Android applications to Google Play Store

Nice to Have

• Kotlin Multiplatform experience for cross-platform mobile development
• Swift/iOS/React Native development experience for enhanced cross-platform collaboration
• Gaming industry experience or passion for chess and gaming
• Experience with performance optimization for applications serving millions of users
• Familiarity with real-time applications and multiplayer gaming architecture
• Experience with automated testing frameworks and CI/CD pipelines for Android

About the Opportunity

• This is a full-time opportunity
• We are 100% remote (work from anywhere!)