Senior Compiler Developer (Kotlin Compiler - Core)

Responsibilities

• As part of the Kotlin Compiler team, you’ll take ownership of the central pipeline that connects the compiler’s frontend with multiple backends. This is deep, technical work that directly influences how Kotlin code is transformed, validated, and optimized. You’ll make architectural decisions that improve compiler…
• Day to day, you will
• Develop and implement new language features.
• Implement and fine-tune intermediate representation (IR) lowering passes.
• Investigate and resolve complex compiler bugs and edge cases.
• Improve compiler performance and memory usage.
• Work with other Kotlin teams to shape how the language evolves.
• Help improve the developer experience for Kotlin users.
• Maintain and improve Kotlin infrastructure (IR/AST transformations, Klibs, and its backward compatibility).
• In your first few months, you’ll dive into the compiler's central pipeline and start taking ownership of specific lowering passes and bug fixes. Over time, you’ll be making significant architectural contributions that measurably improve compiler performance and memory usage. Success means earning the trust of your team…

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