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You are passionate about chess and a meticulous linguist with a deep love for the game. Your expertise in both the English and Russian languages goes beyond simple fluency, allowing you to appreciate the nuances and structures that create precise, high-quality translations. You thrive in a collaborative environment, are highly responsive, and have a knack for managing your time effectively to meet deadlines. With a strong background in professional translation and a high-level understanding of chess, you are the ideal candidate to ensure our content resonates perfectly with Russian-speaking chess enthusiasts everywhere.

What you'll do

Help translate user interfaces of all Chesscom apps (Chesscom, Chesscom Mobile, ChessKid, ChessKid Mobile, Dr Wolf, etc).
Help translate marketing campaigns.
Help translate Coach analysis.
Review previously submitted translations and ensure they're high quality.

Preferred Skills

Demonstrated expertise in chess with a deep understanding of its terminology, reflected by a minimum Chess.com rating of 1500 (2000+ preferred).
Proven professional experience in translating complex texts between English and Russian.
Exceptional linguistic knowledge, including a strong grasp of language theory and structure.
Native or near-native fluency in both English and Russian.
Excellent communication skills with a high degree of responsiveness and the ability to work effectively on collaborative platforms like Slack.
Proven ability to work efficiently and meet tight deadlines, occasionally within a 24-48 hour turnaround time.
Availability to work a flexible part-time schedule, averaging 10-20 hours per week.

About the Opportunity

This is a part-time opportunity with an estimated 10-20 hours/week on average.
We are 100% remote (work from anywhere!)

Software Engineer (Java)

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Revolut

🇦🇪 United Arab Emirates

This role offers the opportunity to relocate to Poland, Spain, or the UAE. You'll receive support from Revolut throughout the entire process. Once you move, you'll have the flexibility to work remotely or in a hybrid model from an office in Krakow, Barcelona, Madrid, or Dubai.

Our Technology team isn’t just one of the best in the industry. It’s one of the best in the world. And we’re proud of it. It’s our driving force, our engine. From building a new financial backend to creating an innovative app and features that millions of people around the world will use, there’s nothing our Tech team can’t do.

We’re looking for a Backend Engineer who wants to change the world. If you want your work to change the global financial landscape, you might be just who we’re looking for.

We have a minimalist approach to using external frameworks, with an emphasis on maintainability and fast turnaround with TDD, DDD and Continuous Integration & Delivery.

Our technology stack:

Java 17/21
GCP, Kubernetes, Grafana, Prometheus, NewRelic
PostgreSQL, Redis
Spock, SparkJava
JOOQ, Flyway

If you’re up for the challenge of shaping the future of finance, let’s get in touch.

What you’ll be doing

Building mobile APIs
Developing microservices to evolve our architecture
Perfecting systems that our business depends on, like risk management, fraud detection, and payment processing
Focusing on greenfield development and improvement of existing systems

What you'll need

Fluency with Java
6+ years of experience in backend development
A bachelor's degree in computer science, maths, physics, or similar field
To be a quick learner with an ambitious attitude and results-driven personality
The ability to work well as part of a team in a fast-paced environment
Excellent communication and organisational skills
Fluency in English

Nice to have

Familiarity with Kotlin or Scala
A background in financial services or fintech
Experience in a startup or scale-up
Involvement in product-centric development environments

We are looking for a talented MLOps Engineer to join our Vector team in Barcelona (Relocation is provided).

Responsibilities:

Extend and maintain our online inference service (2M predictions per second) in Python;
Develop ML-oriented CI/CD pipelines (Databricks MLFlow, Dagster);
Maintain Online/Offline observability;
Deploying machine learning models in production;
Enable data scientists to run their experiments, support their model interface in online inference service.

Requirements:

Over 3 years of experience in MLOps or high load environment;
Master's or Ph.D. in Computer Science, Machine Learning, or a related field, or equivalent practical experience;
Ability to design and implement cloud solutions and to build MLOps pipelines (entire ML project lifecycle, including data management, experimentation, model training, deployment, and monitoring);
Experience with data pipelines like Dagster and Airflow;
Experience with model repositories like MLFlow;
Experience with various method of model deployment (docker image + API, ONNX binary, joblib etc);
Fluency in Python;
Fluency in Rust;
Excellent understanding of different formats (JSON, YAML, pickle etc);
Good understanding of network programming and protocols (TCP, HTTP, GRPC, UDS) and their limitations;
Deep understanding of linux, docker and k8s (network, sidecars, shared resources);
Knowledge of fundamental computer science concepts including common data structures and algorithms;
Test driven development;
Monitor the MLOps tools/approaches landscape to actively identify solutions for various domain problems;
Ability to understand tools used by data scientists and experience with software development and test automation;
Excellent English language skills.

Nice to have:

Practical experience with Databricks;
Experience with Docker and Kubernetes;
Working knowledge of Vector Databases (OpenSearch, Qdrant, Weaviate, LanceDB, etc);
Experience with Online Feature Stores (Hopsworks, RonDB, redis);

This position supposes relocation to Barcelona and work from our office in the city center.

‍Why Join Us:

Opportunity to work on cutting-edge projects with a global impact in the mobile app industry.
A collaborative and inclusive work culture that values innovation and continuous learning.
Competitive salary, flexible work arrangements, and comprehensive benefits package.
Professional development opportunities and career growth prospects within a fast-growing company.

With an outstanding product and a mission that excites and inspires, Appodeal offers a unique opportunity to make an impact while being part of an amazing team.

Join us and help shape the future of mobile app success!

Senior Golang Engineer

CoinsPaid offers ready-to-use crypto payment solutions tailored to business’ every need. Standing at the forefront of mass adoption, our products help businesses gear up for the new era of digital assets. We showed a tremendous growth in terms of transactions and volumes since 2019 and in 2023 were marked by Forbes as the "Best Crypto Payment Gateway for High-Volume Transactions".

Headquartered in Estonia and having 3 international hubs, we are still a remote-first company with employees working from 30+ countries around the world. At CoinsPaid, we are passionate about crypto, fintech and are putting great effort into building a team that will get the world ready for every-day crypto use. If these feel close to you - give us a shout!

Responsibilities

Write robust, scalable, and reusable Golang code according to requirements
Cover code with unit tests. Work together with QA engineers to ensure high, consistent code quality
Perform code reviews, help teammates with solving technical problems
Troubleshoot issues where needed
Participate in requirements and implementation discussions
Ensure stable operation of the product through monitoring, alerts and metrics
Develop applications to work in an isolated infrastructure, complying with security standards
Work only with the backend, solve complex algorithmic problems related to fintech
Communicate clearly with the team about technical directions and product goals
Promote knowledge sharing across the team

Requirements:

3+ years of experience with Golang as a primary working language and 5+ of overall development experience
Experience with queues Kafka/NSQ/NATS/Rabbit
Comfortable working with Docker, Kubernetes, good understanding of CI/CD (we use ArgoCD and Gitlab)
Experience with MySQL or similar DBs
Experience with software engineering best practices (e.g. unit testing, code reviews, design documentation)
Experience with Scrum
Understanding of software observability tools - Prometheus, Grafana, ELK, Opsgenie
Experience in training and onboarding engineers (will be as plus)
Skilled in assessing technical skills and knowledge via code reviews, peer evaluations

Nice to have:

Experience in training and onboarding engineers
Experience mentoring junior and mid-level developers, offering coaching, feedback, and support for their career growth.
Understanding crypto industry
Take part in interviews

Middle Backend Developer

We’re looking for a Middle Backend Developer to join one of our core product teams — BackOffice, Growth, or Pensions. You’ll help us scale mission-critical systems, improve operational efficiency, and deliver great experiences for both internal and external users.
You’ll work closely with engineers, product managers, designers, and business stakeholders, and you’ll have the autonomy to own solutions end to end. This role is ideal for someone who’s proactive, reliable, and passionate about clean, maintainable code that solves real business problems.

What You’ll Do

Design and build backend services in Python 3.11, using Django and Django REST Framework
Work with MySQL to design and optimise database schemas, and use Redis for caching and performance
Develop and evolve RESTful APIs for both client-facing features and internal tools
Own features end-to-end: from shaping the technical approach to release, monitoring, and iterative improvement
Improve system scalability, performance, and reliability as we grow rapidly across new product lines
Collaborate with cross-functional teams (Product, Design, Compliance) to deliver features that are simple, compliant, and impactful
Debug and solve production issues, proactively identify bottlenecks, and drive architectural improvements
Follow best practices in version control (Git), CI/CD (we use TeamCity, GitHub Actions), and code quality
Contribute beyond code: suggest smarter flows, improve developer experience, and advocate for technical excellence

What We’re Looking For

2+ years of backend development experience in Python
Solid experience with Django (or equivalent Python frameworks)
Strong understanding of relational databases (MySQL or PostgreSQL)
Experience working with RESTful APIs
Proficiency with Git and CI/CD tools (TeamCity, GitHub Actions, etc.)
Strong communication skills and a proactive, solution-oriented mindset
Comfortable working in fast-paced environments with evolving requirements
English fluency (C1 level and above) — we are a UK-based company, and the role involves regular communication with the team

Nice to Have

Experience with Redis, AWS, and Docker
Previous work in fintech, product-first companies, or regulated environments
A public GitHub profile with meaningful contributions or personal projects is a strong plus

How We Work

We’re a lean, fast-moving team that values clarity, ownership, and transparency.
Our backend developers are not just code writers — they contribute to architecture, improve processes, and help shape the product. We expect autonomy, but we also support each other. No bureaucracy, no drama — just respectful collaboration and meaningful work.

What We Offer

Impact from day one
You’ll be solving real problems that make a measurable difference to the business and our users.
Room to grow
We’re scaling fast, and there’s plenty of opportunity to take on more responsibility and evolve with the company.
Modern stack and tools
We use Python 3.11, Django, MySQL, Redis, AWS, TeamCity, GitHub — with a focus on clean, well-maintained code.
Transparent and open culture
From regular team updates to open idea channels in Slack — we keep communication honest and decisions collaborative.
Supportive team
You’ll join a team of thoughtful, motivated people who care about what they build and how they build it.
Remote and flexible
Work from wherever suits you best. We care about outcomes, not time zones.

Our Hiring Process

Intro call with the Talent team
Technical interview with Backend team
Final call with СTO

Whitehat Studios is seeking a QA Tester to work as part of our QA team to help ensure quality and compliant delivery of our casino content to the US market.

The Job:

Execute tests on Whitehat Studios games and products to ensure high quality and compliance prior to release.
Find, reproduce and report defects, followed by verification of related fixes.
Collaborate with deployment teams to ensure issues are resolved in an effective manner.

What you already have:

Experience in testing, courses, self-training.
Manual testing of the application on various devices.
The ability to write clear and concise issue reports.
Working knowledge of Jira, tools from Atlassian project.
The ability to communicate with designers and developers at all levels.
An excellent eye for detail.
Good interpersonal skills and a great team attitude.
The ability to quickly learn new things and adapt.
Analytical thinking.
Ability to think outside the box and test edge case scenarios.
Exposure to testing against strict regulatory or legal requirements.
Knowledge of testing and the ability to apply it in practice.

Nice to have:

The ISTQB certificate will be an additional advantage.
iGaming experience

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: We live by Teamwork, Innovation, Trust, and Integrity in everything we do.
Results-Oriented Focus: We prioritize getting things done while supporting each other to reach both collective and individual goals.
Open Collaboration: Our open-door policy fosters collaboration across all levels and departments, where ideas flow freely.
Global Team: We are truly a global team with people from various counties and cultures contributing to our success.

What we offer:

A remote/hybrid/office-based 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.

Everything about WHS won't fit into a job ad, want to find out more about working with us? Apply to get the conversation started.

We’re looking for an experienced Project Manager to drive efficiency and continuous process improvements in 2 teams working closely with each other, up to 10 professionals total.

You'll be responsible for two technical teams of System Engineers, C++ backend developers, C++ client developers, ensuring optimized processes, rhythm of work, risk control, team members’ motivation & autonomy.

Tasks to be solved:

Set and enforce the rhythm: planning, milestones, deadlines, grooming, reviews, retros.
Ensure each team process or policy is purpose-driven, applied on time, data-validated, feedback-refined, and simple.
Track focus, blockers, scope shifts; react fast.
Proactively identify, rank, and mitigate delivery risks.
Provide actionable data on team results and velocity; launch delivery acceleration from the data.
Run action-oriented 1:1s; deliver real-time, life-changing feedback.
Facilitate sharp, outcome-driven meetings.
Organize performance-review activities.

The ideal candidate would:

Have 3+ years of project management experience.
Be able to demonstrate past successes in managing 2 teams simultaneously.
Have a proven track record implementing Agile methodologies.
Have a proven track record in resolving delivery risks and issues.
Be able to propose and make data-driven decisions.
Have had success implementing task-tracking tools.
Be an excellent facilitator of meetings.
Have outstanding verbal and written communication skills.
Show exceptional self-organization skills.
Demonstrate the ability to deliver constructive, actionable feedback consistently.

The following would be to your advantage:

English to B1 level.
PMI, PRINCE2 certification.
Knowledge of how to create analytical reports.
Experience in QA or Release Management.

What we offer:

The best team in the world!
An excellent remuneration package, including a 13th salary.
Fully-covered relocation to Limassol, Cyprus for you and your family .
A modern and sunny office space close to the sea.
Private health insurance for you and your family members.
A monthly pre-school, school, and university allowance for employees' children.
Lunch compensation.
A sports and fitness allowance.
Personal development opportunities paid for by the company: professional and language courses, books, etc.
Bonuses for outstanding results, years worked, getting married, and the birth of a child.
Friendly monthly office parties and epic, annual offsite company birthday and Christmas parties.

User Acquisition Manager

Cleverside is a mobile game developer renowned for its expertise in crafting engaging casual games.

Our commitment to quality has earned a vast dedicated user base. We have:

Over 40 million installs
Hundreds of thousands of daily players enjoying our game
Team of 50+ passionate people.

Cleverside team is looking for a highly motivated and responsible User Acquisition Manager.

Expected daily tasks:

Managing campaigns on social networks (Meta, Google, Unity, Applovin, Mintegral, TikTok) and other platforms;
Designing, implementing and optimizing marketing campaigns to attract new users and increase ROAS;
Building and maintaining strong relationships with account managers and partners;
Collaborating with internal teams: marketing, motion design and HTML5 specialists;
Analyzing campaign performance and ensuring KPIs are met, focusing on quality and quantity of the user base;
Exploring and testing new tools, channels, and strategies to drive growth.

Qualifications

Proven experience in User Acquisition (3+ years preferred);
Strong track record of working with social/video platforms and achieving measurable results;
Expertise in crafting and executing data-driven UA strategies;
Proficiency in Excel (pivot tables, data analysis, reporting);
Understanding of advertising monetization in gaming;
Experience in conducting tests and working with hypotheses;
Strong analytical mindset with a passion for digging into user behavior and trends;
English B1 or higher

Nice to have:

Experience in web2app and incent traffic;
Experience in mobile gaming user acquisition;
Passion for mobile games and enthusiasm for exploring innovative growth solutions.

Benefits

Remote work and flexible schedule.
Salary in USD: competitive, stable, paid on time.
Paid vacation + days off
Great opportunities for professional development
Corporate events, team-building activities, a tight-knit and engaged team

You’re a creative software engineer with an interest in chess. You’ve built software for fun. You’re a regular chess player

and want to combine your software and chess skills to help teach others the game. You enjoy collaborating and iterating with partners in the product organization to deliver high-quality experiences to users. You care about your code’s correctness, clarity and structure. You’ve shipped bugs to production, found them and fixed them.

About the Team (Core Chess)

The Core Chess team is responsible for Chess.com’s most “chess-intensive” and customized technologies: game analysis, puzzle generation and rating, custom bots, text-generation systems, our proprietary chess computation library and more. We are actively building many new products and features to make chess easier to learn and more enjoyable for a broader range of people. With your help, we are bringing the joy of chess to the world!