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Staff Software Developer (Kotlin Libraries) (m/f/d)

JetBrains GmbH

Source: ArbeitsagenturLocation: Germany onlyPublished: Jul 07, 2026Confirmed active: Aug 03, 2026
Healthcare

via Arbeitsagentur

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At a glance

Tech stack
KotlinJVMJava standard library
Seniority:
Senior
Benefits
  • Strong base salary
  • Flexible work location
  • Extra time off
  • Medical insurance allowance
  • Learning and development opportunities
  • Language classes

Staff-level developer to design and maintain foundational Kotlin libraries used by large numbers of developers. Ideal for experienced engineers focused on API design, performance engineering, JVM internals and standards work. Role includes participation in a Kotlin design committee and shaping language tools and specs.

  • Build and maintain core Kotlin primitives
  • Join design committee shaping Kotlin APIs
  • Work on language features, tools and specs
  • Flexible location and limited remote-from-abroad days

Automatically generated

Job description

We are looking for an experienced developer to help us shape the future of the Kotlin ecosystem.

As part of our team, you will:

  • Create and maintain foundational libraries for Kotlin core primitives that are used by hundreds of thousands of developers
  • Become an expert in specific domains of computer science and software engineering
  • Be part of a design committee that decides how the Kotlin API should be shaped
  • Participate in creating standard Kotlin tools, specifications and language features

Preferable:

  • JVM development experience down to the implementation details of the Java standard library
  • Strong understanding of the domain you've been working with
  • Ability to write design documents for complex systems with strong reasoning behind each trade-off and technical decision
  • Experience in performance engineering or API design

In general, if you see yourself reading a Unicode standard, exploring how five other languages transform strings to bytes, figuring out why some Oceania islands changed their timezone from -10:00 to +14:00 and whether it should be expressed in the API of Kotlin timezones, optimizing interface hierarchy to be more JIT-friendly and is not afraid of re-iterating over documentation a multitude of times, you won't get bored in our team.

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.

This role is provided by an external source. Applications are handled on the source website.

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