Remote 💻 Development Jobs

Meet Your Team: Programmatic Solutions

The Programmatic Solutions team powers adjoe’s real-time ad network solution integrated with leading mobile mediation platforms on both Android and iOS. Our focus lies in building adjoe’s own Ad Network– a smart bidder leveraging machine learning to optimize campaign performance by predicting conversion probability and lifetime value in real time. The team is responsible for both the adjoe Ads platform that decides which ad to display and our Android/iOS SDKs that render these ads and provide tracking events to the backend. We’ve also developed tools through which app publishers can manage their integration, analyze monetization performance, and assess ad user experience through dashboards and APIs. For potential teammates across all disciplines, working in the Programmatic Solutions team means applying your problem-solving skills in adjoe’s advanced programmatic ecosystem where milliseconds directly impact both revenue and relevance.

What You Will Do:

• Contribute to High-Impact projects: You’ll work alongside the team to tackle complex data problems. You will help bridge the gap between a business idea and a technical solution, ensuring we deliver results that actually move the needle for the company.
• Help building Reliable Data Pipelines: You’ll help organize our data workflows using tools like dbt and Airflow. You’ll help build clean and automated data layers that the whole product team can trust for reporting.
• Data Collection & Quality Assurance: Design and manage scalable data collection and validation processes, ensuring high-quality, reliable datasets through systematic cleansing, monitoring, and quality control practices.
• Data Analysis: Apply statistical techniques and data mining methods to extract valuable insights from structured and unstructured data.
• Data Visualization: Create clear and compelling visualisations, dashboards, and reports to communicate findings effectively to stakeholders.
• Collaborative Decision-Making: Work closely with cross-functional teams, including business stakeholders, to understand their requirements and provide analytical support.
• Data-driven Recommendations: Present findings and actionable recommendations based on data analysis to drive operational improvements, optimise processes, and enhance business strategies.
• Contribute to A/B testing: You’ll evaluate SDK-side experiments to support the rollout of profitable features.
• Data Governance: Ensure data integrity, security, and compliance with relevant regulations and policies.
• Continuous Learning: Stay updated with the latest tools, techniques, and industry trends in data analytics and contribute to the growth and development of the data analytics function within the organisation.

Who You Are:

• Experience: 5+ years of experience in data analysis or related fields, with a demonstrated progression in responsibility and project diversity; direct experience within the AdTech ecosystem is highly preferred. Proven experience providing technical guidance and mentorship to junior or mid-level data analysts.
• Education: Bachelor’s or Master’s degree in Computer Science, Data Science, Informatics, or a related discipline, preferably with a strong foundation in mathematics.
• Advanced SQL: Mastery of Window Functions, CTEs, and handling deeply nested JSON/Map types. Expert ability to optimize heavy Trino (Athena) operations for performance and cost-efficiency within Datalake environments handling a daily data volume of 5TB+.
• Statistical Knowledge: In-depth understanding and application of advanced statistical concepts for modeling and forecasting. Proficient in Python for evaluating A/B tests (Power Analysis, P-values, Bayesian methods).
• Complex data manipulation: Expertise in Python for complex data transformation, specializing in memory-efficient processing to ensure scalable analytics pipelines and consistent reporting performance under massive daily data volumes.
• Domain Expertise: Proven track record of identifying business “blind spots” and independently proposing/executing data projects that improve operational efficiency or revenue, preferably in an AdTech environment.
• Communication Skills: Strong presentation and storytelling skills to effectively communicate complex technical findings to stakeholders from different units.
• Analytics Engineering (Big Plus): Experience organizing data workflows using dbt (or similar tools) to create clean, reliable datasets for reporting. Familiarity with Airflow (or similar tools) to automate and schedule data updates.

Fuel for the Journey: Benefits to Support Your Ambitions

• Invest in Your Future: Regular feedback and our development program support your growth, helping you expand your skillset and achieve your career goals.
• Easy Arrival to adjoe: From signing to settling in Hamburg, we’ve got you covered. Need a visa? No problem. Ready to build your new life and career at adjoe in Hamburg? We support every ambition—from learning German to a relocation bonus that helps you settle in and make Hamburg feel like home.
• Live Your Best Life, at Work and Beyond: We work in a hybrid setup with 3 core office days, plus flexible working hours. Enjoy 30 vacation days, 3 weeks of remote work per year, and free access to an in-house gym with lots of different fitness classes and mental health support through our Employee Assistance Program (EAP).
• Thrive Where You Work: Enjoy the Alster lake view from our central office with top-notch equipment, fun open spaces, and a large variety of snacks and drinks.
• Join the Community! Participate in regular team and company events, including hackathons and social gatherings. We work together, and we celebrate together, too.

Your Work-Life Upgrade

• competitive salary
• quarterly team adventures
• monthly feasts on the company
• up to €7000 for referred friends
• discounted city commute
• extensive visa & relocation support
• convenient hybrid work model
• continuous investments in your development
• generous vacation days
• mental health & wellness benefits

Job Responsibilities

• Integrate mobile banking platform with major US banking cores such as Keystone, Ultradata, and Symitar.
• Contribute to core back-end services used across all products.
• Work on real-world banking integrations, complex APIs, and high-load services.
• Collaborate closely with a distributed team to solve challenging problems in a fintech environment.
• Participate in modernizing a monolithic architecture and preparing it for cloud migration.
• Work in an Agile team with mature processes.

Requirements

• Experience in back-end development using C#.
• Familiarity with banking integrations and APIs.
• Ability to work in a remote, distributed team environment.
• Willingness to have periodic overlap with US Pacific daytime hours (5–9 AM PST).

Qualifications

• Proven experience as a Software Development Engineer.
• Strong understanding of high-load services and performance optimization.
• Experience with Agile methodologies.

Benefits

• Remote work flexibility.
• Opportunity to work on impactful projects in the fintech space.
• Collaboration with a friendly and supportive team.

Perks

• Full-time position.
• Engagement in modernizing technology stacks.

Who You Are

You are a motivated back-end developer with a passion for fintech and a desire to work on complex integrations that enhance user experiences.

Tech Stack

• C#
• APIs
• Cloud technologies (for future migration)

Team Description

You will be part of the Core Integrations Team, working in a collaborative and Agile environment with a focus on delivering high-quality solutions for banking integrations.

In this role, you will:

• Model Development & Evaluation
  • Build and maintain evaluation frameworks for document models, LLMs, OCR, and structured extraction.
  • Define metrics, benchmarks, and validation strategies for real-world document workloads.
• Dataset & Pipeline Creation
  • Design and curate high-quality datasets for supervised training, fine-tuning, and validation.
  • Create scalable preprocessing pipelines for PDFs, scans, images, forms, and semi-structured documents.
• Model Training & Fine-Tuning
  • Train and fine-tune transformer-based OCR, VLMs, layout models, and open-source LLMs for document understanding tasks.
  • Optimize models for reliability, accuracy, and cost efficiency in production environments.
• Inference & Deployment
  • Deploy ML models with modern inference runtimes (vLLM, TGI, TensorRT, ONNX Runtime).
  • Build guardrails, monitoring, and fallback mechanisms to ensure safe and predictable model behavior.
• RAG & Document Reasoning
  • Develop retrieval and chunking strategies tailored to document structures (tables, forms, multi-page PDFs).
  • Optimize end-to-end RAG pipelines for semantic search, Q&A, and workflow automation.
• Cross-Functional Collaboration
  • Partner with PMs, backend engineers, and product designers to define AI opportunities and translate requirements into technical solutions.

About you:

We are expanding our AI/ML function with an ML Engineer who specializes in document intelligence, vision–language models, and LLM-based extraction and reasoning. You should be comfortable with both traditional document AI approaches and cutting-edge GenAI workflows. You thrive in fast-moving environments, are self-directed, and enjoy solving practical ML problems that directly impact customers.

We’re looking for someone with experience in:

• Vision transformers, layout models, and OCR systems
• Structured extraction from complex documents
• RAG for document-heavy workloads
• Optimizing LLM pipelines for cost, accuracy, and throughput
• Deploying and benchmarking models in real production systems

Required Experience

• 5+ years of Python experience
• Experience training, fine-tuning, and deploying traditional computer vision models for document intelligence tasks (layout detection, table extraction, OCR, information extraction)
• Hands-on experience with document understanding frameworks and models:
  • Traditional document AI models (LayoutLM, Donut, DocFormer)
  • Modern vision-language models with OCR capabilities (DeepSeek-OCR, LightOnOCR-1B, etc.)
  • Experience deploying and optimizing models using inference frameworks such as vLLM (preferred), TGI, TensorRT, or ONNX Runtime
  • Experience applying LLMs to document intelligence workflows, including both frontier models and open-source alternatives
  • Strong understanding of coordinate systems and spatial reasoning for absolute positioning and field detection in forms/documents

It would be awesome if you had:

• Familiarity with PDF parsing libraries and document preprocessing pipelines
• Experience fine-tuning open-source models for domain-specific document tasks
• Knowledge of evaluation metrics for document understanding tasks (F1, exact match, etc.)

Benefits:

• An honest, open culture that emphasizes feedback and promotes professional and personal development
• An opportunity to work from anywhere — our team is distributed worldwide, from Lisbon to Manila, from Florida to California
• 6 self care days
• A competitive salary
• And much more!

What you'll do

• Build cloud-native infrastructure on GCP using VPC, IAM, GKE, Cloud SQL, and Cloud Storage
• Containerize with Docker and orchestrate via Kubernetes and Helm
• Build and maintain CI/CD pipelines (GitHub Actions, GitLab CI, Jenkins)
• Use Terraform and Ansible as daily infrastructure tools
• Script automation and tooling with Python and Bash
• Monitor systems and resolve issues before they escalate
• Review code, document changes, and improve engineering practices

Team description

Quantori is an international team: we have colleagues who work not only from office but also remotely from all over the world.

Qualifications

• Professional Certification: At least one of the following GCP certifications is required: Cloud Architect, Cloud Database Engineer, Cloud Developer, Cloud DevOps Engineer, Cloud Network Engineer, Cloud Security Engineer

Requirements

• Hands-on experience with GCP (networking, compute, storage, databases)
• Fluency in Kubernetes and knowledge of cluster internals
• Capability of optimizing Docker for production
• Knowledge of what good CI/CD looks like and how to build it
• Automation with Terraform, Ansible, Python, and Bash
• Awareness of DevOps principles, not just tools
• Clear communication and ability to work independently
• Capability to overlap with PST time zone

Nice to have

• Understanding of core AWS services and differences from GCP; experience with cloud-to-cloud migrations
• Strong understanding of PKI, certificate management, and secure data exchange (HL7, clinical documents, secure email)
• Healthcare domain knowledge: HL7, Fyre, IAG profiles, clinical documentation workflows

Tech stack

• GCP services: VPC, IAM, GKE, Cloud SQL, Cloud Storage
• Containerization and orchestration: Docker, Kubernetes, Helm
• CI/CD tools: GitHub Actions, GitLab CI, Jenkins
• Infrastructure as Code and automation: Terraform, Ansible
• Scripting: Python, Bash
• Monitoring and operations

Benefits and perks

• Strong management and technical expertise
• The contract till the end of the year with possible extension based on project needs and performance
• Remote work
• Flexible working hours

About the team

We are growing the Financial Assistant team at Plata, building intelligent systems that support users in managing their finances, understanding spending, and interacting with financial products in a simple and intuitive way. This team plays a key role in improving customer experience, engagement, and the overall value of our core products. This is a customer-facing product in a regulated environment — accuracy, safety, and trust are non-negotiable.

We use AWS, Go, Python and cloud-based models, yet still flexible to mix ready-made tools and ship our custom solutions. We're all about building systems that deliver real, valuable results for our organization.

You will be a key specialist in a cross-functional team, working closely with backend, mobile and other LLM engineers.

Challenges that await you

• Work with agentic architectures where needed: tool use, multi-step reasoning, orchestration, and failure recovery
• Design and maintain eval infrastructure (offline test suites, golden datasets, regression harnesses) that gives a reliable signal after every change
• Work with advanced prompts, set up RAG-oriented data sources for efficient retrieval, and evaluate model outputs to ensure accuracy, relevance, and quality
• Implement safety and guardrails: hallucination detection, refusal strategies, factual grounding
• Run online and offline experiments (canary, A/B) to validate that changes improve real user outcomes
• Own observability from day one: trace LLM calls, monitor quality drift, latency, and cost per session in production
• Collaborate with backend engineers and product to ship reliable improvements, review code, and maintain production health

What makes you a great fit

• Strong classical ML fundamentals, you understand what's happening inside models, not just how to call their APIs
• Strong eval mindset: you design the measurement system before writing the first prompt, and treat evals as a first-class engineering artifact
• Hands-on experience with search and retrieval: dense/sparse/hybrid, reranking, query understanding — using managed tooling effectively, not necessarily from scratch
• Practical experience with agentic architectures: tool use, orchestration, failure recovery
• Safety-first thinking: guardrails, content policies, graceful degradation under uncertainty, especially in a context where wrong answers have real consequences
• Production ML ownership: observability, latency budgets, cost tracking, regression detection
• Expertise in Python and its ecosystem, as well as language- and framework-agnostic mindset to achieve project goals
• Familiarity with open-source tools to build and evaluate RAG applications.
• Excellent communication skills and ability to explain complex technical concepts to a broad audience of stakeholders
• B1 or higher English level for effective communication with an international team

Your bonus skills

• Previous experience delivering business-critical ML/AI-powered applications for customer-facing products
• Fine-tuning or distillation of LLMs for production use cases
• Experience deploying open-source models (Llama, Mistral) in private/on-premise environments
• Experience in fintech, banking, or regulated domains

Job Responsibilities

1. Develop and maintain automation testing frameworks and tools to improve testing efficiency and quality.
2. Design, develop, and optimize automation test scripts covering scenarios such as functional testing, API testing, and performance testing.
3. Participate in the construction of the testing platform, optimize CI/CD processes, and enhance the role of automation testing in the development process.
4. Develop reasonable testing strategies in line with business requirements, write test cases, and conduct test execution and defect management.
5. Analyze test data, locate and track software defects, and drive the rapid resolution of issues.
6. Participate in product architecture design reviews and provide optimization suggestions from a testing perspective to improve system testability and stability.
7. Keep up with the latest industry technology trends and explore and implement new testing tools and methods.

Job Requirements

1. Bachelor's degree or above in Computer Science, Software Engineering, or related fields, with at least 3 years of experience in test development.
2. Proficient in at least one programming language (such as Python/Java/Go), with good programming skills.
3. Familiar with common automation testing frameworks, such as Selenium, Appium, Robot Framework, TestNG, pytest, and capable of secondary development according to needs.
4. Familiar with API testing (Postman/RestAssured/JMeter, etc.), with certain database testing capabilities (such as MySQL, PostgreSQL, MongoDB, etc.).
5. Experienced in performance testing, stress testing, and stability testing, familiar with tools such as JMeter, Locust, Gatling.
6. Familiar with DevOps processes and understand CI/CD (Jenkins/GitLab CI/K8s, etc.) automation testing integration.
7. Possess good analytical and problem - locating abilities, able to respond quickly and drive problem resolution.
8. Have excellent communication skills and a strong sense of teamwork, with a strong sense of responsibility and self - motivation.

Preferred Qualifications

1. Experience in testing large - scale Internet and high - concurrency systems.
2. Experience in security testing, containerized testing (Docker/K8s), or AI - based automation testing.
3. Participation or leadership in the development of testing tools/testing platforms.
4. Experience as a contributor to open - source projects or sharing technical blogs.

Tech Stack

• Programming languages: Python, Java, Go
• Automation frameworks: Selenium, Appium, Robot Framework, TestNG, pytest
• API testing: Postman, RestAssured, JMeter
• Databases: MySQL, PostgreSQL, MongoDB
• Performance testing: JMeter, Locust, Gatling
• CI/CD and DevOps: Jenkins, GitLab CI, Kubernetes (K8s)

About Checkr
Checkr is building the data platform to power safe and fair decisions. Established in 2014, Checkr’s innovative technology and robust data platform help customers assess risk and ensure safety and compliance to build trusted workplaces and communities. Checkr has over 100,000 customers including DoorDash, Coinbase, Lyft, Instacart, and Airtable.
We’re a team that thrives on solving complex problems with innovative solutions that advance our mission. Checkr is recognized on Forbes Cloud 100 2025 List and is a Y Combinator 2024 Breakthrough Company.

As a Senior Software Engineer at Checkr, you will play a crucial role in advancing our product in our mission to create the data platform of the future. Across the product development lifecycle, you will collaborate with other engineers and product counterparts to architect and deliver new platform capabilities and key product initiatives. Your passion for technical excellence will drive progress in modernizing our technical stack, simplifying system architecture, and automating manual workflows to ensure our platform's scalability and efficiency. 

The Criminal Screenings team is on a mission to orchestrate and deliver the world’s most trusted background check and criminal screening reports, building best-in-class, scalable products that are transparent and accessible to everyone at Checkr.

We own market-leading criminal screening coverage across National Criminal searches, Watchlist, Sex Offender Registry, and jurisdictional workflows—including federal, state, county, and municipal levels—with a strong focus on accuracy, fairness, and fast turnaround times. If you’re passionate about building automation-first solutions, driving radical transparency, and creating delightful experiences that help millions of people get hired fairly, we’d love to have you join our team.

What you'll do:

• Develop new platform capabilities and product offerings from design through release
• Find the balance between speed to market and long-term growth by designing for the horizon and building for today
• Partner with Product to define appropriately sized initiatives to construct a roadmap that meets business needs quarter over quarter
• Preserve customer goodwill by ensuring system availability by participating in on-call rotation, addressing support tickets, and taking action on preventative measures to improve reliability
• Provide mentorship to engineers on the team and across the organization
• Play an active role in the continuous improvement of the engineering organization through lunch table discussions, team showcases, and reviews with senior leadership

What you bring:

• 5+ years of backend software development experience with a strong proficiency in Ruby (preferred), Golang, or JavaScript/TypeScript
• Bachelor’s or Master’s degree in Computer Science, Data Science, AI/ML, or a related field preferred
• Solid understanding of Computer Science fundamentals such as relational and non-relational databases, data structures, algorithms, and REST APIs
• Experience with domain modeling, object design, and system architecture
• Proven track record of writing clear, tested, and concise code
• Proficiency to set expectations and inform decisions through project estimates based on the information available
• Ability to write and review technical proposals, providing constructive feedback and articulating trade-offs
• Strong sense of ownership across all aspects of the development lifecycle, including incident response and accountability for product robustness
• Desire to collaborate and share knowledge with peers, both within the team and across the organization
• Eagerness to learn, improve, and innovate in a fast-paced and collaborative environment

#LI-TD1

Pay Transparency Disclosure

One of Checkr’s core values is Transparency. To live by that value, we’ve made the decision to disclose salary ranges in all of our job postings. We use geographic cost of labor as an input to develop ranges for our roles and as such, each location where we hire may have a different range. If this role is remote, we have listed the top to the bottom of the possible range, but we will specify the target range for an exact location when you are selected for a recruiting discussion. For more information on our compensation philosophy, see our website.

At Checkr, we believe a hybrid work environment strengthens collaboration, drives innovation, and encourages connection. Our hub locations are Denver, CO, San Francisco, CA, Nashville, TN, and Santiago, Chile. Individuals are expected to work from the office 3 days a week. In-office perks are provided, such as lunch five times a week, a commuter stipend, and an abundance of snacks and beverages. A relocation stipend may be available for those willing to relocate to a Checkr hub location.

Equal Employment Opportunities at Checkr
Checkr is committed to building the best product and company, which requires hiring talented and qualified individuals with a diverse set of perspectives and lived experiences. Checkr believes in hiring people of all backgrounds, including those whose histories are impacted by the justice system in accordance with local, state, and/or federal laws, including the San Francisco’s Fair Chance Ordinance.

Applicant Privacy Policy
If you are a California resident or are located in Alberta or British Columbia, our Applicant Privacy Policy applies to our collection and processing of your personal information when you apply for a role with us or otherwise participate in our recruitment process.

*Legitimate Checkr emails will always include our official domain name after the @ symbol (e.g., name@checkr.com or name@ext.checkr.com).

• Summary

  We are looking for Platform Developers (Scala Developers) with a server-side focus to help us improve our core platform services. If you are able to help us build a next-generation system, we're interested in talking to you. This is a fully remote role reporting to Engineering Management.

Your day to day

• Developing and delivering new features for the existing platform
• Implementing new third-party integrations within the platform
• Collaborating with the team to migrate the platform to a new architecture and technology stack based on Scala
• Building and maintaining services that support both customer-facing websites and internal administration tools, working closely with front-end developers where required
• Diagnosing, troubleshooting, and resolving production issues to ensure platform stability
• Participating in code reviews to maintain code quality and share knowledge across the team
• Adapting to the varied and evolving challenges of working in a growing company
• Demonstrating initiative and ownership, proactively identifying tasks rather than waiting for direction
• Continuously seeking more efficient and effective ways of working, contributing ideas to improve processes and deliver

Who you are

• Minimum of 3 years of experience with Scala
• Experience with at least one additional JVM-based language
• At least 1 year of experience writing complex SQL queries, beyond basic SELECT statements
• Familiarity with automated testing practices and frameworks
• Strong communication and interpersonal skills, with a collaborative team mindset
• Ability to quickly learn new technologies and adapt in a fast-paced environment

Nice to have

• Familiarity with Java Servlets, because there’s always legacy code
• Working knowledge of functional programming and its advantages
• An understanding of asynchronous/reactive programming
• Exposure to integrating third-party APIs
• Experience in performance profiling and tuning Java applications

Tech stack

• Server-side Scala
• JVM-based languages
• SQL and database querying
• Automated testing practices and frameworks

How we approach things

• Dynamic Medium-Sized Environment: we have a can-do ethos, where innovation is encouraged, and action is valued.
• Core Values at Heart: Teamwork, Innovation, Trust, and Integrity in everything we do.
• Results-Oriented Focus: prioritise getting things done while supporting each other to reach both collective and individual goals.
• Open Collaboration: open-door policy fosters collaboration across all levels and departments, where ideas flow freely.
• Global Team: truly a global team with people from various countries and cultures contributing to our success.

What we offer

• A remote and flexible working schedule.
• Generous time off varied based on the country of residence.
• Discretionary annual performance bonus
• Training and other learning & development opportunities to support you through your career progression.
• Hardware & Software allowance or work equipment is provided to make sure you have all the right tools to get the job done.
• Various well-being programmes and initiatives.

Job Responsibilities

As a Staff / Principal Research Scientist, you will:

• Frame research questions and design experiments to find answers.
• Take full-stack ownership of research projects, from conception to publication.
• Evaluate and measure the quality of models and experiments.
• Collaborate with a team to tackle unclear problems and develop solutions.
• Contribute to the development of multimodal models and agentic systems.
• Support the sharing of work that advances the field of AI.

Requirements

• PhD in Machine Learning or Natural Language Processing, or equivalent practical experience.
• Experience with foundation models, evaluation methods, and frontier topics in AI.
• Published research in reputable conferences such as ICML, ICLR, NeurIPS, EMNLP, ACL, or AAAI.
• Demonstrated ability to conduct non-trivial AI side projects or open-source contributions.

Qualifications

• Strong problem-solving skills and ability to work in ambiguous situations.
• Experience in designing experiments and evaluating results.
• Ability to communicate complex ideas clearly and effectively.

Benefits

• Base salary range of $270,000 - $500,000+ bonus + equity.
• Relocation assistance for candidates moving to Mountain View.
• Support for sharing research work that contributes to the field.

Perks

• In-person collaboration to foster a strong team culture.
• Flat organizational structure with fast iterations and minimal process.

What You'll Do

You will engage in cutting-edge research, develop innovative AI models, and contribute to the advancement of the field through impactful work.

Who You Are

You are a proactive researcher who thrives in ambiguity, values impact over academic output, and is driven by a desire to understand the fundamental logic behind decisions.

Tech Stack

Experience with machine learning frameworks and tools relevant to foundation models and multimodal systems is preferred.

Team Description

You will be part of a product-oriented research lab comprised of top AI researchers and engineers, focused on developing best-in-class real-time multimodal models.

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.

Tech Stack

• Swift 5.0+ (with emphasis on newer Swift features)
• Objective-C
• iOS SDK, UIKit
• RESTful APIs and JSON data parsing
• Git for version control
• Xcode IDE and iOS simulators
• Dependency managers: CocoaPods, Swift Package Manager
• CI/CD pipelines for iOS
• App Store submission process
• Testing: XCTest
• Nice-to-have: SwiftUI, Core Data, RxSwift or Combine, BLE, push notifications

Team Description

We're seeking an accomplished Senior iOS Developer to become an integral part of our innovative development team. In this fully remote role, you'll architect, build, and maintain sophisticated iOS applications utilizing Swift and Objective-C. The ideal candidate possesses at least 3 years of hands-on mobile development experience and demonstrates unwavering commitment to crafting exceptional user experiences across Apple's ecosystem.

Collaborate with cross-functional teams to conceptualize, design, and ship new features. Stay current with the latest iOS development trends, tools, and methodologies. Contribute to technical documentation and knowledge sharing within the team.

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.

Spotware Systems is seeking an experienced Senior Java Developer to join our dynamic team in our office in Limassol. As a Senior Java Developer, you will be responsible for designing, developing, and maintaining high-quality software solutions using Java and related technologies. You will be communicating with the Product Manager, Client-Side Developers, DevOps and the DBA team.

Responsibilities

• Designing, developing, and implementing Java-based applications, components, and services.
• Collaborating with architects and technical leads to define software architecture and design patterns.
• Working closely with QA engineers to ensure the quality and reliability of software deliverables.
• Clear specifications and requirements will be provided to you by the Product Manager and there will be strict plans and sometimes deadlines to follow.

Requirements

• Bachelor's degree in Computer Science, Engineering, or a related field.
• 3+ years of experience as a Java Developer.
• Solid experience with unit testing.
• Strong J2SE programming skills.
• Multi-threading (Executors, locks).
• Understanding of Collections framework and its pitfalls.
• Experience with Spring Web and Spring IoC.
• Experience in TCP/IP networking and sockets programming (Netty nice to have)
• Strong experience with SQL.
• Skills in a high performance and low latency environments
• Strong analytical skills required to solve complicated technical problems.
• Fluency in Russian and B1+ in English language.
• You use AI not just occasionally, but as a core part of how you think, work, and deliver results. Being AI-augmented is part of what makes you a top performer.

A plus to have

• Netty
• Quarkus
• Redis
• PostgreSQL
• Protobuf

Tech stack

• Java
• Spring Web
• Spring IoC
• Netty (nice to have)
• TCP/IP networking and sockets programming
• SQL
• High performance and low latency environments
• AI augmentation in development

Benefits and perks

• Competitive remuneration.
• Private medical insurance.
• Relocation support, including work permit arrangements.
• Welcome baby bonus.
• Birthday voucher.
• Fully equipped office with daily fruits, pizza on Thursdays and snacks on Fridays.
• Opportunities for professional growth.
• Friendly working environment.

About the role

SumUp is looking for a Systems Engineer Manager to join our Corporate IT team. In this role, you will report to the Head of Global IT. You will establish and lead our Systems Engineering function within Corporate IT, establishing the discipline from the ground up. You will own and mature SumUp's identity infrastructure, built on Microsoft Entra ID, and drive the consolidation and standardization of our core business platform configurations.

We are looking for a technical strategic thinker who thrives in bringing structure to complexity. You won’t just be "keeping the lights on"; you will be actively improving stability, observability, and performance.

About the team

The Corporate IT team currently consists of a diverse group of System Administrators and outsourced support across the EU and the Americas. Our mission is to ensure every SumUp employee can access the tools they need safely and efficiently. We provide the "digital keys" to the company, ensuring that identity and access are seamless enablers of work rather than hurdles. 

We believe in high accountability, technical excellence, and fostering a culture where IT is treated as an engineering discipline. If you are excited about building unified identity platforms, leveraging cutting edge technologies like AI and scaling internal engineering in a complex, multi-region fintech environment, we want to hear from you.

What you’ll do

• Design conditional access policies, manage identity lifecycles, and ensure SSO health across a complex Microsoft Entra ID environment.
• Develop scripting and workflow tooling to reduce manual toil and increase reliability across the organization.
• Drive the adoption of AI-powered tooling to automate routine processes and scale the team's output beyond human hours.
• Partner with Endpoint Management to ensure seamless integration between identity, access, and device management across the fleet.
• Govern access to AI platforms and tooling (e.g. Copilot, Cursor, Langdock) - permissions, data boundaries, audit trails
• Lead the consolidation and standardization of core business platform configurations to bring consistency to our fast-growing landscape.
• Build a team where you will set clear expectations and actively support the career growth of your team members.
• Partner closely with Security & Compliance for access controls, the People Team for "Joiner-Mover-Leaver" processes, and Engineering teams for secure tool access.
• Own the IT service queue for systems-level issues, triaging and resolving with engineering rigour rather than a purely reactive support mindset.

You'll be great for this position if:

• You have 5+ years of experience in IAM or Systems Engineering, with deep expertise in tooling like Azure/Entra ID, Okta, or OneLogin.
• Familiarity with governing non-human identities and service accounts at scale -- this is increasingly critical as AI tooling proliferates and is a meaningful filter for the right candidate
• You have a proven track record of automating lifecycle processes (JML) and proficiency in scripting (PowerShell, Bash, or Python).
• You design systems that solve access problems before they reach the helpdesk and have expert knowledge of cloud-first identity principles like SCIM and OIDC.
• You have experience acting as a technical lead, managing high-level administrative permissions, and navigating "Least Privilege" environments.
• You see technical debt and inconsistent configurations as an opportunity to create structure rather than a hurdle to avoid.

Why you should join SumUp:

🌍 Opportunity to work with SumUppers globally on large-scale fintech products used by millions of businesses worldwide, from our Berlin office. This involves an office-first setup.

🌈 Commitment to Diversity and Inclusion: Be part of a workplace that values and promotes diversity, fostering an inclusive environment where everyone's perspectives are respected and embraced

📚 A dedicated annual L&D budget of €2,000 for attending conferences and/or advancing your career through further education.

🚀 Enrolment onto our VSOP program: You will own a stake in SumUp’s future success

💶 A corporate pension scheme where we match up to 20% of your contributions

🔄 30 Days Sabbatical: Enjoy the unique opportunity to take a well-deserved break with our 30 days sabbatical benefit after completing 3 years of employment with SumUp.

🔗 Referral Bonus: Earn additional rewards by referring talented individuals to join the SumUp team.

🚵🏾‍♂️ Numerous other benefits such as Urban Sports Club subsidy, Kita placement assistance, relocation assistance, subsidised office lunches.

About us:

Be empowered to do more that matters.

At SumUp, we're on a mission to empower small businesses across the globe by providing simple and affordable tools that allow them to thrive. Today, over 4 million businesses in 36 markets rely on SumUp as their financial partner to manage payments, finance and customer relationships.

Our commitment to small businesses is reflected in our diverse team of over 3,000 SumUppers from over 90 nationalities, united by global collaboration and an innovative mindset. Our core values lay the foundation for who we are and what we stand for, shaping our work culture and driving our success. We foster inclusivity and a continuous learning culture, providing a safe space for personal and professional growth. Our differences make us unique and strong as we strive to create an environment where everyone belongs and feels supported, no matter how they identify. 

SumUp is proud to be an Equal Employment Opportunity employer, actively seeking and embracing diversity in our workforce. We don't make hiring or employment decisions based on race, colour, religion or religious belief, ethnic or national origin, nationality, sex, gender, gender identity, sexual orientation, disability, age or any other basis protected by applicable laws or prohibited by company policy. Our commitment extends beyond recruitment to creating a safe and respectful workplace where harassment of any form is strictly prohibited.

Explore career opportunities with us and join a team driven by collaboration, innovation, and a shared vision of creating a world where everyone can build a thriving business. Discover more about our vibrant and inclusive work culture and how we work on our careers website, and follow our journey on LinkedIn and Instagram.

Job Application Tip

We recognise that candidates feel they need to meet 100% of the job criteria in order to apply for a job. Please note that this is only a guide. If you don’t tick every box, it’s ok too because it means you have room to learn and develop your career at SumUp.

Job Description

Responsibilities

• Research cyberattacks affecting and targeting major business infrastructures.
• Participate in threat hunting and threat intelligence research projects.
• Analyze and mitigate the latest web vulnerabilities (both 0-day and patched), participate in communication with the responsible authority.
• Develop and improve internal tools for automatic threat analysis.
• Investigate incidents for the benefit of our customers.

Requirements

• Wide experience with web attacks (web application and browser security) and their mitigation methods.
• Good understanding of web server software and hosting systems architectures (Linux/UNIX-based).
• Good understanding of the PHP language, proven experience in code analysis/scripting.
• Familiarity with web-based malware.
• AI/ML skills or strong willingness to learn and apply AI in security automation.
• Knowledge of English no lower than upper-intermediate.

Preferred Qualifications

• Experience in developing security tools, automation, and frameworks.
• Python Development Experience.
• Experience of participation in CTF, bug bounty programs.
• Experience in finding vulnerabilities, CVE IDs assignment.
• Familiarity with ModSecurity and OSSEC.

Benefits

• A focus on professional development.
• Interesting and challenging projects.
• Fully remote work with flexible working hours, allowing you to schedule your day and work from any location worldwide.
• Paid 24 days of vacation per year, 10 days of national holidays, and unlimited sick leaves.
• 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.

WHAT YOU’LL BE DOING:

• Operate automated latency-sensitive trading systems
• Monitor the systems’ executions and open positions
• Adjust system parameters based on market conditions
• Manually trade to reduce risk when necessary
• Suggest automation and improvements to the systems
• Communicate relevant news, market events, and system behavior to team members
• Stay current with system functionality

WHAT WE LOOK FOR IN YOU:

• 3+ years of algorithmic trading experience
• A proven track record in the last 2-3 years
• Having your own trading strategies/ideas
• 1+ years experience in Python
• Performs well in a remote/hybrid team with variable, project-based responsibilities

NICE-TO-HAVE:

• Experience with international HFT companies and hedge funds
• Performance in any quantitative field or contest (hackathons, Olympiads, academic contests, etc.)

WHY SHOULD YOU JOIN OUR TEAM?

• Great challenges with fast feedback loops
• A welcoming group of highly qualified international professionals
• Great corporate culture with internal events and surprising commitment to fostering a supportive and empowering environment
• Cutting-edge hardware and technology
• Work remotely from anywhere in the world
• Access any of our global offices anytime
• Flexible schedule
• 40 paid days off
• Competitive salary and performance-based bonuses

Job Responsibilities

• Enhance product quality by developing automated tests.
• Contribute to the improvement of QA processes throughout the development lifecycle.
• Actively share expertise with the engineering team.
• Demonstrate a proactive approach to tasks and continuous improvement.
• Maintain a strong quality mindset across all stages of development.
• Define and lead the automation strategy based on risk and scalability.
• Mentor team members and help grow QA expertise across the team.
• Collaborate with cross-functional teams to embed quality early in development.

Requirements

• Over 3 years of experience in QA automation.
• Strong problem-solving and task prioritization skills.
• Skilled in test planning, prioritization, documentation, and test design.
• Hands-on with Playwright; familiar with Selenium.
• Proficient in TypeScript or another OOP language (Python is a plus).
• Skilled in using an AI tool set to boost productivity across test design, automation, and reporting.
• Experienced in building and maintaining automation frameworks.
• Knowledge of REST API testing tools (Postman, REST-assured, Playwright API).
• Understanding of test layers: Unit, Integration, End-to-End.
• Familiar with QA tools: Allure, TestRail.
• Comfortable using Git, with knowledge of branching strategies and merge request workflows.
• Awareness of load/performance testing tools (Locust, K6 is a plus).
• Effective communicator in cross-functional teams.
• Advanced English, written and spoken.

Qualifications

• Involved in refinement, sprint planning, and QA sign-off processes.

Benefits and Perks

• Fully remote team with a global presence.
• Be part of an AI Native Organization that embraces innovation.
• Opportunity to reshape the $100B multilingual content industry.
• Join a rapidly growing company with plans to scale significantly.
• Commitment to building an inclusive culture that values diversity.

What You'll Do

• Analyze the current QA approach and identify opportunities for improvement.
• Deliver a structured improvement plan with short- and long-term goals.
• Develop a clear understanding of the product and its key workflows.
• Execute prioritized improvements from the QA plan.
• Take ownership of QA responsibilities in a specific product area.

Who You Are

• A proactive individual with a strong quality mindset.
• A mentor who helps grow QA expertise across the team.
• A collaborative team player who communicates effectively.

Tech Stack

• Playwright, Selenium, TypeScript, Python (optional).
• REST API testing tools (Postman, REST-assured, Playwright API).
• QA tools (Allure, TestRail).
• Git and basic understanding of GitLab CI/CD.
• Load/performance testing tools (Locust, K6 is a plus).

Team Description

The QA team is committed to promoting modern QA tools and approaches, supporting ongoing improvements in quality assurance practices, and ensuring high-quality outcomes throughout the development lifecycle.

Hyperskill is an educational platform that helps people build real computer science skills by learning through practice. One of our core product features is a direct integration with JetBrains' IDE — learners can solve coding tasks inside their real development environment.

What You'll Do

• Maintain and improve an existing JetBrains IDE plugin
• Fix bugs and issues reported by users and the support team
• Keep the plugin compatible with new JetBrains IDE versions
• Improve stability, usability, and overall developer experience
• Implement new features and improvements

What We're Looking For

• Experience with Kotlin or Java and readiness to work with the Kotlin stack
• Extensive AI and vibe coding experience to navigate through the IntelliJ Plugin SDK
• Comfortable working independently without very detailed technical specification

Nice to Have

• Experience with JetBrains Platform SDK
• Experience developing JetBrains IDE plugins (commercial or personal)

What We Offer

• Contractor agreement with a US-registered legal entity
• 100% remote — work from anywhere in the world
• Competitive salary in USD
• Flexible part-time or full-time collaboration
• Meaningful product impact

Hiring Process

1. HR Interview — a quick intro call
2. Test Task — a real task from our actual workflow (compensated if you join)
3. Team Interview — a final chat with the team

We build and fund fast growing ventures for safe access to psychedelics and progressive mental health care. Pink Elephant exists to build the companies that will steer the revolution in mental health.

The Role

We are looking for a designer who owns the full stack of how a product feels — from first tap to long-term habit. Someone who creates products which build relationships with users and yet obsesses over conversion funnels and retention curves as much as UX and UI.

Responsibilities

• Brand & product vibe: define and protect a distinct visual and emotional identity
• Vibe-coding & rapid prototyping: use AI-assisted code tools (v0, Cursor, Bolt, etc.) to build interactive prototypes and ship real UI
• End-to-end product design: own the full design process from insight to shipped screen
• Conversion architecture: design onboarding, paywalls, and activation flows with measurable lift
• Design systems: maintain a living component library that scales
• User research & feedback loops: run lightweight qualitative sessions and close the loop with design decisions

What You Bring

• Conversion-aware design — you understand funnels, drop-off, and what makes someone tap "subscribe"
• Retention-first thinking — you design for week 2 and month 3
• Vibe-coding fluency — comfortable using AI tools to generate and iterate real UI code
• Strong design POV — your work has a recognizable creative signature
• Mobile-first craft — obsessive attention to gesture, scroll, haptic affordance on iOS
• Async communication — ship clear Loom walkthroughs, annotated Figma files

Perks

• Opportunity to build designs of breakthrough mental health products
• Start-up culture: remote team, freedom in schedule and decision making
• Team of professionals passionate about progressive mental health

At LeverX, we have had the privilege of working on over 950 SAP projects, including some with Fortune 500 companies. With 20+ years in the market, our team of 2,200 is strong, reliable, and always evolving: learning, growing, and striving for excellence.

We are looking for a Data Migration Lead to join us. Let’s see if we are a good fit for each other!

What you'll do

• Define and own the overall data migration strategy and governance framework.
• Identify and manage migration scope (master data, open items, balances, transactional data).
• Lead data profiling, cleansing, and harmonization activities.
• Plan and execute migration cycles (mock loads, dress rehearsal, cutover).
• Coordinate extraction, transformation, loading, and reconciliation processes.
• Ensure alignment with functional, technical, and business teams.
• Track data quality KPIs and manage risks and escalations.
• Secure business validation and formal data sign-off before go-live.

Requirements / Qualifications

• 7+ years of SAP data migration experience.
• Proven track record as Data Migration Lead in full-cycle SAP S/4HANA implementations.
• Strong understanding of SAP S/4HANA data structures and integration points.
• Strong knowledge of SAP Migration Cockpit and related tools.
• Experience with multi-entity rollouts, complex transformations, and tight timelines.
• Excellent stakeholder management, communication, and coordination skills.
• Strong analytical and data quality management skills.
• Experience working in large-scale transformation programs.
• English B2+.

Benefits & Perks

• 89% of projects use the newest SAP technologies and frameworks.
• Expert communities and internal courses.
• Valuable perks to support your growth and well-being.
• Employment security: We hire for our team, not just a specific project. If your project ends, we will find you a new one.
• Healthy work atmosphere: On average, our employees stay in the company for 4+ years.

Tech stack

• SAP

Team/Role specifics

Area: Consulting

Location: Worldwide

Technology: SAP

About the role

This role will be operating at the intersection of applied research and engineering, building crucial AI capabilities, and owning their robust implementation. You will have direct impact on shaping the models served in our products, and the user experience as well as business value that is driven by them.

What you'll do

• Post-training, distillation and reinforcement learning
  • Create training environments that elevate the quality ceiling of synthetic data, and provide high-quality reward signals for both off- and on-policy learning.
  • Design model behaviors that optimize for interpretability and an outstanding user experience.
  • Train agentic models that autonomously interact with complex structured and unstructured environments, write and prototype code, and navigate multimodal inputs.
  • Utilize the best tool for the job – SFT over synthetic data, on-policy distillation, RL or any combination of these to drive down the cost of specialized intelligence.
  • Own benchmarking pipelines – assemble high-quality datasets and measure impact of different training parameters or methodologies.
• Engineering Principles
  • AI engineers are engineers – build production-ready code and own the end-to-end process of data, training, benchmarking and implementation.
  • Architect scalable inference strategies that maximize compute efficiency.
  • Maintain solutions to ensure stable, reliable execution for customers.
  • Closely collaborate with engineering team to design important intersections of AI and product services such as interfaces, inference tracking, checkpointing, data persistence and caching.
  • Contribute to engineering culture; mentor peers, evolve patterns, raise the bar on code quality, testing strategy, and documentation.
• Tooling & Resources
  • Work with bleeding-edge open-weights models and internal training frameworks.
  • Stay at the forefront of open research and tooling– rapidly prototype and validate novel approaches.
  • Contribute to internal tooling for inference, training, orchestration, and data generation.
• Soft Skills & Mindset
  • Communicate ideas and explain solutions – even to a non-technical audience.
  • Autonomously build demonstrations and showcase work to the wider company.
  • Break down ambiguous problems into a clear technical scope – think beyond immediate business needs and incorporate future scalability into each design.
  • Proactively collaborate with team members and seek out all resources relevant to the task at hand.

Qualifications

Our ideal candidate has all of the following:

• Strong background in both ML and engineering
• Great communication skills and rapid understanding of problem descriptions
• High agency; willing to propose, prototype and own solutions
• Experience in post-training large models (SFT, distillation, RL)
• Experience deploying models at production scale
• Previous work with dockerized systems (Docker, Kubernetes, etc.)
• Previous contributions to open research or AI infrastructure
• Strong familiarity with latest AI research and open-source tooling
• Experience shipping complex software and owning production-code

Nice to Have

• Experience performance-engineering inference architecture for maximum throughput (vLLM, SGlang, llama.cpp)
• Detailed knowledge of RL frameworks (verifiers, ART, prime-rl, trl)
• Published models or blog posts/publications

Success Indicators

• Benchmarks and user metrics: Model quality does not just exist in a lab – both benchmarks and real user metrics are critical to evaluate model quality.
• Reliability: Minimizing hallucinations, maximizing inference uptime and consistency, ensuring high accuracy in expected model outputs.
• Interpretability: We do not build black-box AI – all models must be able to communicate reasoning processes, break down code execution, reference sources and achieve consensus decisions.
• Impact: Improving internal frameworks and tooling, elevating technical culture, educating teams and sharing learnings.
• Collaboration: Ownership of projects without micro-management, agency in seeking out and offering help wherever possible.