About the Role:

Your Impact:

• Develop and enhance Kotlin-based backend services that power Wrike’s mobile application
• Contribute to the core platform, including APIs, business logic, and performance optimizations tailored for mobile use cases
• Collaborate closely with iOS, Android, QA, product, and design teammates to deliver high-quality features
• Participate in code reviews and peer reviews to maintain engineering quality and consistency
• Help evolve the mobile backend service and propose innovative technical solutions using Kotlin
• Support the delivery of a reliable, scalable, and user-friendly mobile experience for Wrike customers

Your Qualifications:

• 4–6 years of software development experience using Java, Spring, MyBatis, PostgreSQL, and Maven
• Production experience building backend systems and services
• Good understanding of backend architecture, SOLID principles, and REST APIs
• Strong knowledge of SQL and API design
• Ability to keep solutions simple, scalable, and maintainable
• Strong communication skills in English
• Commitment to continuous learning and improvement
• At least 1 year of production experience with Kotlin is preferred

Standout Qualities:

• Experience working closely with mobile engineering teams
• Experience working in global or distributed teams
• Background in SaaS products or enterprise software
• Proactive approach to technical decision-making and implementation
• Ability to identify weaknesses in current solutions and suggest meaningful improvements
• Strong collaborative mindset and willingness to partner across teams to achieve shared goals
• Positive attitude that contributes to a fun, productive, and supportive team environment

Team Dynamics:

Our Work Style:

Why Join Wrike?

• 25 calendar days of paid vacation
• Sick Leave Compensation (5 Paid Uncertified Sick Days)
• Parental Leave: 18 Weeks Maternity / 4 Week Paternity 
• 2 Volunteer Days
• Medical Insurance (Employees + Dependents)
• Hybrid Working Model
• School Allowance (Up to €600/month for school aged kids)
• Simcard w/ Unlimited Internet Access for active employees
• Office Lunch Allowance (via Wolt) on Wednesdays / Thursday

What’s Next?

• Interview with a Recruiter 30mins
• Technical interview 105 mins
• Cultural interview 90 mins

Your recruitment buddy will be Aleksandar Chernev, Senior Technical Recruiter.

#LI-AC1

About the Role:

Your Impact:

• Develop and enhance Kotlin-based backend services that power Wrike’s mobile application
• Contribute to the core platform, including APIs, business logic, and performance optimizations tailored for mobile use cases
• Collaborate closely with iOS, Android, QA, product, and design teammates to deliver high-quality features
• Participate in code reviews and peer reviews to maintain engineering quality and consistency
• Help evolve the mobile backend service and propose innovative technical solutions using Kotlin
• Support the delivery of a reliable, scalable, and user-friendly mobile experience for Wrike customers

Your Qualifications:

• 4–6 years of software development experience using Java, Spring, MyBatis, PostgreSQL, and Maven
• Production experience building backend systems and services
• Good understanding of backend architecture, SOLID principles, and REST APIs
• Strong knowledge of SQL and API design
• Ability to keep solutions simple, scalable, and maintainable
• Strong communication skills in English
• Commitment to continuous learning and improvement
• At least 1 year of production experience with Kotlin is preferred

Standout Qualities:

• Experience working closely with mobile engineering teams
• Experience working in global or distributed teams
• Background in SaaS products or enterprise software
• Proactive approach to technical decision-making and implementation
• Ability to identify weaknesses in current solutions and suggest meaningful improvements
• Strong collaborative mindset and willingness to partner across teams to achieve shared goals
• Positive attitude that contributes to a fun, productive, and supportive team environment

Team Dynamics:

Our Work Style:

Why Join Wrike?

• 5 Weeks of paid vacation
• Sick Leave Compensation 
  • 5 Paid Uncertified Sick Days
  • 2 weeks fully paid w/ medical certificate, additional 
  • 4 weeks paid at 80% salary rate
• Parental Leave (fully paid): 18 Weeks Maternity / 4 Week Paternity 
• 2 Volunteer Days
• Meal Vouchers (CZK 220 per working day)
• Annual Prague Travel Card (Lítačka)
• Hybrid Working Model
• Benefit budget with flexible options, including a MultiSport card, Canadian Medical membership, contributions to a pension savings plan and additional choices available through Benefit Plus

What’s Next?

• Interview with a Recruiter 30mins
• Technical interview 105 mins
• Cultural interview 90 mins

Your recruitment buddy will be Aleksandar Chernev, Senior Technical Recruiter.

#LI-AC1

At JetBrains, code is our passion. Ever since we started, back in 2000, we have strived to make the strongest, most effective developer tools on earth. By automating routine checks and corrections, our tools speed up production, freeing developers to grow, discover, and create. 

Developed by JetBrains, Kotlin is a modern programming language targeting the Java, Android, JavaScript, WASM and native (LLVM) platforms. Released in 2016, the language is rapidly gaining popularity. In 2019, it became Google's preferred language for Android development, later becoming its go-to for server-side development.

For any programming language, including Kotlin, a build system is a vital tool. We aim to make the process of working with Kotlin-supporting build systems within IntelliJ IDEA smooth and easy. Our job is to ensure that Kotlin projects in the build system are reflected accurately in the IntelliJ IDEA model and that this transition (import) is fast and reliable.

We support various build systems such as Gradle, Maven, and IntelliJ IDEA’s built-in JPS. In the future, we may add more to this list. We are currently looking for an experienced Software Developer with general software engineering skills to join the team and be part of this effort. Most of our codebase is written in Kotlin and Java 11 and managed in Git repositories, some of which are open on GitHub.

As part of our team, you will: 

• Develop and maintain the tools required to integrate Kotlin with different build systems.
• Improve Kotlin’s seamless integration from build system representations into the IntelliJ IDEA project model.
• Work on import performance improvements, reliability, and new features.

We'll be happy to have you on our team if you: 

• Enjoy solving complex and challenging problems.
• Have at least five years of professional Kotlin or Java development experience.
• Want to improve Kotlin support in IntelliJ IDEA.
• Can design and write code that is easy to read and support.
• Understand the algorithms behind the code you write.
• Have strong teamwork skills, are able to listen to others' ideas, and can offer sound reasoning to support your ideas.
• Want to grow as a professional while mastering new approaches and technologies.
• Take pride in your work.
• Are keen on improving the Kotlin developer experience.
• Have sufficient command of English to discuss tasks with colleagues and write documentation.

We’ll be especially thrilled if you: 

• Are familiar with JVM build tools like Gradle and Maven.
• Have experience writing Gradle plugins.
• Have experience working with Kotlin Multiplatform (KMP).
• Have experience creating plugins for IntelliJ IDEA.
• Love finding creative solutions to challenging technical problems.
• Have participated in or created your own open-source projects.

Why join JetBrains?

• Strong base salary. We offer competitive pay that reflects your skills and experience.
• Flexible work location. Enjoy the freedom to work from home or from the office.
• Remote work. Spend up to 30 days per year working remotely from abroad.
• Extra time off. More days to relax, recharge, and do the things you love.
• Medical insurance allowance. Enjoy peace of mind for you and your family.
• Learning and development opportunities. Access to conferences, courses, and language classes.
• Relocation support. We help make your move as smooth and stress-free as possible.
• Language classes. Pick up the local language or sharpen your English skills.
• Fuel your day. Enjoy a hot meal or receive a lunch allowance on workdays.
• Mental health support. To help you feel your best, we provide easy access to professional mental health services.
• Sports benefit. Enjoy an on-site gym or sports club stipend.
• Internal events. Join company-wide celebrations and team gatherings.
  *Some benefits may vary depending on location.

#LI-IM1

At JetBrains, code is our passion. Ever since we started, back in 2000, we have been striving to make the strongest, most effective developer tools on earth. By automating routine checks and corrections, our tools speed up production, freeing developers to grow, discover, and create.

Kotlin is a modern programming language created by JetBrains that targets the Java, Android, JavaScript, and native platforms. Kotlin has been rapidly gaining popularity since 2016 – it is now the official language for Android development and is supported in many frameworks, engines, and tools.

With Kotlin Multiplatform and Compose Multiplatform, our goal is to empower Android developers to build the best multiplatform apps. The Kotlin Multiplatform Tooling team is responsible for building tools that make this easier than ever. We’re developing Kotlin Multiplatform plugins for both IntelliJ IDEA and Android Studio, while also working on IntelliJ IDEA’s Android support, KDoctor, and the Kotlin Multiplatform wizard.

We're currently looking for a passionate Android developer who can share their experience and perspective with us and who wants to start building the tools they've always wished existed. We're a friendly and international team open to all applicants who share our passion for code.

As part of our team, you will: 

• Improve our Android tooling for Kotlin Multiplatform and Compose inside IntelliJ IDEA and Android Studio.
• Help make the Android plugin available for IntelliJ IDEA.
• Write high-quality code and documentation.
• Maintain quality by participating in code reviews and improving test automation.
• Be an active participant in team discussions, decisions, and planning sessions.

We'd love to have you on our team if you: 

• Have a strong professional background developing real-world Android apps.
• Display excellent programming skills in Kotlin or Java, with a thorough understanding of algorithms, data structures, and thread-safe programming.
• Have a deep understanding of the Android ecosystem and community.
• Can communicate and collaborate proficiently in English.

Nice to have:

• You have any experience in IDE or tool development.

Why join JetBrains?

• Strong base salary. We offer competitive pay that reflects your skills and experience.
• Flexible work location. Enjoy the freedom to work from home or from the office.
• Remote work. Spend up to 30 days per year working remotely from abroad.
• Extra time off. More days to relax, recharge, and do the things you love.
• Medical insurance allowance. Enjoy peace of mind for you and your family.
• Learning and development opportunities. Access to conferences, courses, and language classes.
• Relocation support. We help make your move as smooth and stress-free as possible.
• Language classes. Pick up the local language or sharpen your English skills.
• Fuel your day. Enjoy a hot meal or receive a lunch allowance on workdays.
• Mental health support. To help you feel your best, we provide easy access to professional mental health services.
• Sports benefit. Enjoy an on-site gym or sports club stipend.
• Internal events. Join company-wide celebrations and team gatherings.

*Some benefits may vary depending on location.

#LI-DNI

#LI-GZ1

At JetBrains, code is our passion. Ever since we started, back in 2000, we have been striving to make the strongest, most effective developer tools on earth. By automating routine checks and corrections, our tools speed up production, freeing developers to grow, discover, and create.

The Version Control Experience team is part of the IntelliJ Platform department. We focus on improving the version control workflows across all JetBrains IDEs. From the moment a user clones a project to exploring its branches and reviewing changes, our mission is to make working with Git and other VCS tools feel smooth, fast, and reliable. Our work spans multiple IDEs and directly impacts millions of users.

We’re looking for a Kotlin or Java developer to help us improve the VCS experience across JetBrains IDEs.

In this role, you’ll: 

• Improve core workflows such as cloning projects, switching branches, resolving conflicts, and viewing history.
• Develop and maintain VCS integration components used across multiple IDEs.
• Enhance integrations with GitHub and GitLab, making them more seamless and feature-rich.
• Contribute to architecture and performance improvements within the VCS subsystem.
• Work closely with UX designers and other product teams to polish and improve the VCS experience.
• Have an opportunity to work on features used by millions of developers every day, including your teammates and colleagues
• Have freedom of ideas - you are always encouraged to suggest and implement new features and improvements to existing workflows

We’d be happy to bring you on board if you: 

• Have strong development experience with Kotlin or Java.
• Are familiar with Kotlin coroutines and asynchronous programming.
• Are familiar with web-based APIs (REST, GraphQL).
• Are comfortable working with legacy code and gradually improving it.
• Are interested in developer tools and care about their usability.
• Are open to working with UI (Swing), or already have experience doing so.
• Strive to write clean, efficient, and maintainable code.
• Enjoy exploring how things work under the hood and aren’t afraid of technical complexity.

We would be especially thrilled if you: 

• Are a power user of Git. If you’re comfortable with rebase workflows, cherry-pick, resolving complex merge conflicts, and working with staging areas interactively, you’ll feel right at home.
• Understand Git internals such as the index, reflog, low-level merge strategies, or how Git represents history.
• Have experience with IntelliJ plugins or developer tools.
• Are familiar with UI/UX best practices.
• Experience with mobile development in Android

About the Team: 

We’re a relatively small, distributed team based in Munich, Amsterdam, Berlin, and Belgrade. We keep meetings minimal and collaboration focused and informal. We value empathy, clarity, and initiative – and we’re looking forward to welcoming a new teammate.

Why join JetBrains?

• Strong base salary. We offer competitive pay that reflects your skills and experience.
• Flexible work location. Enjoy the freedom to work from home or from the office.
• Remote work. Spend up to 30 days per year working remotely from abroad.
• Extra time off. More days to relax, recharge, and do the things you love.
• Medical insurance allowance. Enjoy peace of mind for you and your family.
• Learning and development opportunities. Access to conferences, courses, and language classes.
• Language classes. Pick up the local language or sharpen your English skills.
• Fuel your day. Enjoy a hot meal or receive a lunch allowance on workdays.
• Mental health support. To help you feel your best, we provide easy access to professional mental health services.
• Sports benefit. Enjoy an on-site gym or sports club stipend.
• Internal events. Join company-wide celebrations and team gatherings.

*Some benefits may vary depending on location.

At JetBrains, code is our passion. Ever since we started, back in 2000, we've been striving to make the strongest, most effective developer tools on earth. Today, AI-powered coding agents are becoming a core part of how developers write Kotlin – and we want to make sure they write it well.

The Kotlin AI Value Stream team is responsible for how AI agents understand, generate, and improve Kotlin code across all platforms: Android, Kotlin Multiplatform, server-side, web, desktop, and others. We build the evaluation infrastructure, error analysis tools, and post-training pipelines that measure and improve agent behavior on real Kotlin developer tasks.

As a Research Engineer on this team, you'll own the end-to-end loop: Analyze how agents fail on Kotlin → build evals that capture those failures → research and implement methods to fix them → measure the improvement. Your work will directly shape how millions of developers experience Kotlin through AI coding agents.

As part of our team, you will:

Build tools for agentic error analysis

• Design and implement tooling to systematically capture, classify, and analyse errors that AI coding agents make when generating Kotlin code.
• Build observability pipelines over agentic traces – mining patterns from agent sessions in JetBrains IDEs, Junie, Claude Code, Cursor, and other coding agents.

Build evaluation pipelines

• Design, implement, and maintain evaluation pipelines that measure Kotlin code generation quality across dimensions, including correctness, idiomaticity, build success, framework usage, and test coverage.
• Build simulation environments where coding agents can be measured on realistic Kotlin developer tasks – from greenfield KMP projects and Gradle dependency management to migrating Spring applications from Java to Kotlin.
• Own evaluation infrastructure: metrics, experiment tracking, automated regression checks, and reproducible benchmarking.

Research methods for improving agent and model behavior on Kotlin

• Experiment with post-training techniques (SFT, DPO, GRPO) to improve how models handle Kotlin-specific patterns, idioms, and frameworks.
• Investigate context engineering approaches: CLAUDE.md/AGENTS.md files, compiler-as-verifier feedback loops, Kotlin LSP integration, and MCP-based tooling.
• Run experiments to measure impact: A/B comparisons, benchmark suites, and before/after analyses on real codebases.
• Collaborate with model providers (Anthropic, OpenAI, and Google) to translate Kotlin-specific findings into model improvements.

Build public Kotlin benchmarks

• Design and build open-source benchmarks that measure AI coding agent performance on Kotlin tasks and eventually become the standard reference for the ecosystem.
• Create task datasets covering the breadth of Kotlin usage: the server side (Spring, Ktor), multiplatform projects (KMP), build systems (Gradle), Android, library development, and others.
• Include both mined real-world tasks and carefully designed synthetic tasks that test specific Kotlin capabilities.
• Maintain and evolve benchmarks as models improve, ensuring they remain challenging, relevant, and contamination-resistant.

We'll be happy to have you on board if you have:

• Hands-on experience building evaluation or analysis pipelines for LLMs or AI coding agents in a research or production setting.
• Strong Python engineering skills (at least three years), with the ability to write clean, maintainable code in data-heavy and ML-adjacent codebases.
• Experience with data analysis at scale: querying large datasets (SQL/Athena), building data pipelines, and performing statistical analysis of experimental results.
• The ability to own projects end to end – from identifying a problem in agent traces to designing an eval, running experiments, and shipping a fix.
• A product-aware mindset: You care about how agents are actually used by developers and can translate real failure modes into evaluation and training work.
• Familiarity with Kotlin or a strong willingness to develop deep Kotlin expertise (you'll be living in Kotlin codebases daily).

Our ideal candidate would also have experience with:

• Post-training LLMs: SFT, RLHF, DPO, GRPO – either hands-on training or designing the data and reward pipelines that feed into training.
• Modern deep learning frameworks (PyTorch) and LLM training stacks (TRL, verl, Megatron, or similar).
• AI agent development: tool-using agents, multi-step coding workflows, agentic frameworks.
• Evaluation frameworks and tools: Inspect AI, Promptfoo, LM-evaluation-harness, or custom eval pipelines.
• Experiment tracking and observability: Weights & Biases, MLflow, Langfuse, or similar.
• The Kotlin ecosystem: Android, Gradle, KMP, Spring, Ktor – with an understanding of the developer workflows that agents need to support.
• Contributing to or maintaining open-source projects, especially benchmarks or evaluation tools.

Don't check every box? That's okay – if you're excited about this work and bring strong fundamentals, we'd love to hear from you. We're happy to talk and provide the training you need to grow into the role.

Why join JetBrains? 

• Strong base salary. We offer competitive pay that reflects your skills and experience.
• Flexible work location. Enjoy the freedom to work from home or from the office.
• Remote work. Spend up to 30 days per year working remotely from abroad.
• Extra time off. More days to relax, recharge, and do the things you love.
• Medical insurance allowance. Enjoy peace of mind for you and your family
• Learning and development opportunities. Access to conferences, courses, and language classes.
• Relocation support. We help make your move as smooth and stress-free as possible. 
• Language classes. Pick up the local language or sharpen your English skills.
• Fuel your day. Enjoy a hot meal or receive a lunch allowance on workdays.
• Mental health support. To help you feel your best, we provide easy access to professional mental health services.
• Sports benefit. Enjoy an on-site gym or sports club stipend.
• Internal events. Join company-wide celebrations and team gatherings.

*Some benefits may vary depending on location.

#LI-DNI

FlySto is a startup project with a small, distributed team. We have a server, web client, and Android and iOS apps – all written in Kotlin and supported by JetBrains. 

Modern aircraft, even small ones, are equipped with sophisticated avionics systems that measure various flight and engine parameters and record them to internal storage or memory cards. The resulting log files contain enough data to literally “replay” an entire flight, displaying the aircraft’s precise position and orientation, along with all instrument readings available to the pilots. Our product allows pilots to store and analyze their flights from different perspectives on the web and mobile devices. 

We are currently looking for a Lead Product Designer to join our team!

In this role, you will: 

• Guide a small team of product designers, ensuring team productivity and high-quality results.
• Own the design direction and lead large-scale initiatives from vision and strategy through execution.
• Take ownership of the design process hands-on – from research and problem framing to creating wireframes, mockups, and prototypes, as well as delivering a polished UI.
• Collaborate with product managers, developers, researchers, and stakeholders to define problems, align on goals, and ensure design solutions meet user and business needs.
• Effectively communicate design concepts and decisions to stakeholders and the team to promote alignment and understanding.
• Conduct and analyze usability testing and user research to create design solutions based on real user needs and behavioral data.
  
  

We will be happy to have you on our team if you: 

• Are proficient in Figma.
• Can apply an existing brand’s visual language consistently within product interfaces.
• Are able to clearly articulate design decisions, explain thought processes, identify issues, and justify proposed solutions.
• Have a realistic understanding of your strengths and areas for growth.
• Can participate actively in product discussions and cross-functional collaboration.
• Are able to guide tasks end to end, from design solution through implementation and user feedback.
• Feel comfortable working in a highly iterative environment and adapting solutions as the product evolves. 

We would be especially thrilled if you: 

• Have experience designing mobile applications.
• Are interested in aviation, or even a pilot!

#LI-OR1

JetBrains is a leading software vendor specializing in the creation of intelligent development tools, including IDEs and team tools used by millions of professionals around the world. The company is also renowned for developing the Kotlin programming language, Google's preferred language for Android development.

At JetBrains, our employees are deeply important to us. To help us care for them better, we’re looking for a proactive process owner to join our team in Cyprus. Despite working from different countries, our Relocation team stays connected, communicates openly, and meets up regularly at team gatherings.

In this role, you’ll take full ownership of relocation processes. We're looking for someone who thrives while working independently, spearheading improvements, and taking accountability for key decisions. You will be working in close cooperation with other Relocation Specialists and colleagues from other offices. This makes an eagerness to collaborate in an international team of professionals and actively contribute to the ongoing improvements of our global relocation project essential.

As part of our team, you will:

• Be responsible for the full relocation cycle for both newly hired employees and existing employees and their family members moving between JetBrains offices. 
• Following established workflows, tracking all relocations in our project management software and HR systems, and continuously identifying opportunities to optimize relocation processes within the company. 
• Advising employees on our relocation policies and offering guidance about various aspects of their move to Cyprus until they have fully settled.
• Coordinating each part of the relocation process in line with time and budget requirements.
• Arranging temporary accommodation for employees and their families.
• Welcoming relocated employees and supporting their onboarding and settling-in processes.
• Providing relocation cost breakdowns and related taxation details for payroll.
• Guiding employees through the tax benefit process and liaising with the external tax consultant.
• Act as a subject matter expert on immigration in Cyprus and stay up to date with changes in entry and residence regulations, for example, by:
• Being responsible for new employees who require migration support, even without relocation.
• Preparing residence permit application documents for employees or coordinating the process with our immigration provider – tracking the residence permit status of relocated employees and handling extensions or renewals on time.
• Scheduling necessary appointments, such as residence registration, for employees upon their arrival in Cyprus.
  
  
• Offer support for outbound relocations from Cyprus to other JetBrains offices when needed.
• Contribute to local and global HR projects and initiatives.
• Support the local HR team and collaborate with other departments as necessary.
  
  

We’d love to have you on our team if you have:

• 1–3 years of experience in relocation, with additional experience in HR operations, account management, customer support, or project management being a strong plus.
• A combination of relevant education and professional experience, with personal relocation experience being a plus.
• Solid knowledge of immigration processes and residence requirements in Cyprus.
• Motivation to work with customizable project management software, such as JetBrains YouTrack, and an enthusiasm for actively contributing innovative ideas to improve processes. 
• A keen eye for detail and a hands-on approach to work.
• Strong organizational and time-management skills.
• Excellent communication and problem-solving abilities.
• Fluency in English, with Greek language skills being a plus.
• Eligibility to work in Cyprus.

#LI-HYBRID

#LI-MH1