Senior Machine Learning Developer

About the Position

Are you an engineer who loves diving deep into ML models, building standalone CLI tools, and exploring how far AI agents can go in autonomous coding? Do you want to rethink how software is built and use the tools you create every single day?

We are looking for a Senior Machine Learning Developer to join our team at JetBrains and contribute to the development of autonomous AI coding agents.

About JetBrains

We create intelligent software development tools for developers and teams. More than 15 million users, over 300,000 companies, and 88 of the Fortune Global Top 100 rely on our products to solve real, complex problems. Our mission is simple: make development teams more productive and AI adoptable at scale.

Responsibilities

• Develop and ship new features for Junie across CLI and model integrations.
• Experiment with model setups, ensembling, and cost efficiency strategies.
• Build and test autonomous agent behaviors for long-term project maintenance.
• Own the full development cycle from initial research to production-ready code.
• Use Junie daily to continuously iterate on its quality and user experience.

Requirements

• Comfort taking full ownership of decisions and implementation.
• The curiosity to challenge assumptions and experiment with new ideas.
• The ability to learn new concepts quickly and adapt quickly.
• A mindset focused on long-term impact rather than short-term workarounds.
• Strong interest in autonomous AI systems and software engineering tools.
• A proven track record of developing and shipping machine learning or full-stack software products.
• Hands-on experience working with LLMs, prompt engineering, or agentic workflows.
• The ability to write high-quality production code across the full development lifecycle.
• Practical experience building or fine-tuning ML models.

We Offer

• Strong base salary. 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.

Why Join JetBrains?

We are an equal opportunity employer. We know great ideas can come from anyone, anywhere. That’s why we do our best to create an open and inclusive workplace – one that welcomes everyone regardless of their background, identity, religion, age, accessibility needs, or orientation.

We process the data provided in your job application in accordance with the Recruitment Privacy Policy.

Locations

• Amsterdam, Netherlands
• Belgrade, Serbia
• Berlin, Germany
• Limassol, Cyprus
• London, United Kingdom

A lot of teams at JetBrains are distributed across our core locations. If you are not based in one of the locations above, we’d be happy to talk through relocation possibilities with you.