Staff Software Developer (Kotlin Libraries)

Posted 6 Hours Ago
Be an Early Applicant
12 Locations
In-Office or Remote
Entry level
Software
The Role
Create and maintain foundational Kotlin libraries used by hundreds of thousands of developers. Contribute to Kotlin API design, standard tools, specifications, and language features. The role requires deep computer science expertise, careful technical reasoning, design documentation, performance engineering, and API design, with potential work involving JVM internals, Unicode, time zones, and language interoperability.
Summary Generated by Built In
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.
  • Relocation support. We help make your move as smooth and stress-free as possible. (keep if relevant for the role)
  • 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-KT1 


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.

Skills Required

  • JVM development experience down to the implementation details of the Java standard library
  • Strong understanding of the relevant technical domain
  • Ability to write design documents for complex systems and clearly explain trade-offs and technical decisions
  • Experience in performance engineering or API design

JetBrains Compensation & Benefits Highlights

The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about JetBrains and has not been reviewed or approved by JetBrains.

  • Fair & Transparent Compensation Fair & Transparent Compensation: Pay is considered market-competitive for many product and engineering roles in key locations, with published salary ranges on some postings aiding expectation-setting. Feedback suggests total compensation feels fair relative to local markets even if packages are positioned as “competitive but not top‑of‑big‑tech”.
  • Flexible Benefits Flexible Benefits: Work setup includes hybrid/remote options and flexible hours across many locations. The ability to work abroad for part of the year adds practical flexibility to where work gets done.
  • Leave & Time Off Breadth Leave & Time Off Breadth: Time off includes additional vacation days beyond local minimums in many countries. U.S. materials also highlight PTO, sick leave, and holidays, underscoring breadth beyond statutory baselines.

JetBrains Insights

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The Company
HQ: Praha
2,209 Employees
Year Founded: 2000

What We Do

JetBrains creates intelligent software development tools consistently used and trusted by 11.4 million professionals and 88 Fortune Global Top 100 companies. Our lineup of more than 30 products includes IDEs for most programming languages and technologies, such as IntelliJ IDEA, PyCharm, and others, as well as products for team collaboration, like YouTrack and TeamCity. JetBrains is also known for creating the Kotlin programming language, a cross-platform language used by more than 5 million developers worldwide yearly and recommended by Google as the preferred language for Android development. The company is headquartered in Prague, Czech Republic, and has offices around the world. JetBrains IDEs * IntelliJ IDEA (Java and Kotlin Developers) * PyCharm (Python developers) * PhpStorm (PHP developers) * GoLand (Go developers) * Rider (.NET developers) * CLion (C and C++ developers) * Rust Rover (Rust developers) * WebStorm (JavaScript & TypesScript developers) * RubyMine (Ruby and Rails developers) * DataGrip (Tool for multiple databases) * ReSharper (Extension for Visual Studio) * Fleet (Multilingual IDE and code editor) * Aqua (IDE for test automation engineers) .NET & Visual Studio: * Rider (IDE for .NET developers) * ReSharper (Extension for Visual Studio) * ReSharper C++ (Visual Studio Extension for C++ developers) * dotCover (.NET Unit Test Runner and Code Coverage Tool) * dotMemory (.NET Memory Profiler) * dotTrace (.NET Performance Profiler) * dotPeek (.NET decompiler and assembly browser) Team Tools: * TeamCity (Powerful CI out of the box) * YouTrack (Project management for all your teams) * Space (Intelligent code collaboration platform) * Datalore (Collaborative data science platform) * Qodana (Code quality platform for teams) Programming Languages: * Kotlin (Programming Language for the JVM and Android) * MPS (Create Your Own Domain-Specific Language) Education: * JetBrains Academy (Learn and Teach Computer Science) Profile by JetBrains s.r.o.

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