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Fullstack Machine Learning Developer (Junie)

1 hour ago
Serbia, Spain, United Kingdom, Czech Republic, Netherlands, Poland, Cyprus, Armenia, Germany
Full-time
Senior
AI Engineer
Software Development
LLM Machine Learning
Apply Now
JetBrains

JetBrains

JetBrains provides cutting-edge development tools like IntelliJ IDEA and Kotlin, automating tasks to boost productivity and foster innovation.

Internet Software & Services
1K-5K
Founded 2000
View All Jobs 33

Description

  • 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 early research to production-ready code.
  • Use Junie daily to iterate on its quality and user experience.
  • Work on growing Junie CLI into a general-purpose agent independent of any IDE.
  • Improve model cost-to-intelligence tradeoffs without compromising code quality.
  • Push agent autonomy so Junie can own and evolve entire subsystems over multi-day horizons.

Requirements

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

Benefits

  • Competitive base salary.
  • Flexible work location with the option to work from home or the office.
  • Up to 30 days per year of remote work from abroad.
  • Extra time off.
  • Medical insurance allowance for you and your family.
  • Learning and development opportunities, including conferences, courses, and language classes.
  • Relocation support.
  • Hot meals or lunch allowance on workdays.
  • Mental health support with access to professional services.
  • Sports benefit, including an on-site gym or sports club stipend.
  • Internal events and team gatherings.

Interested in this position?

Apply directly on the company website

Apply Now

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