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. Versátil 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. Medical insurance allowance. Relocation support. Pick up the local language or sharpen your English skills. We process the data provided in your job application in accordance with the Recruitment Privacy Policy.

📌 Staff Software Developer (Kotlin Libraries) (Madrid)
🏢 JetBrains
📍 Madrid