Create and maintain foundational libraries for Kotlin core primitives that are used by hundreds of thousands of developersBecome an expert in specific domains of computer science and software engineeringBe part of a design committee that decides how the Kotlin API should be shapedParticipate in creating standard Kotlin tools, specifications and language featuresJVM development experience down to the implementation details of the Java standard libraryStrong understanding of the domain you've been working withAbility to write design documents for complex systems with strong reasoning behind each trade-off and technical decisionExperience in performance engineering or API designAs Part Of Our Team, You WillCreate and maintain foundational libraries for Kotlin core primitives that are used by hundreds of thousands of developersBecome an expert in specific domains of computer science and software engineeringBe part of a design committee that decides how the Kotlin API should be shapedParticipate in creating standard Kotlin tools,



specifications and language featuresPreferableJVM development experience down to the implementation details of the Java standard libraryStrong understanding of the domain you've been working withAbility to write design documents for complex systems with strong reasoning behind each trade-off and technical decisionExperience in performance engineering or API designIn 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.
Versátil work location. Enjoy the freedom to work

📌 Staff Software Developer (Madrid)
🏢 JetBrains
📍 Madrid