Worked on Kotlin Compiler, was responsible for data-flow analysis and smartcasts. One of the primary authors of the Kotlin Contracts. Worked on Kotlin Multiplatform in the role of team lead, was responsible for the design, code architecture, strategy and planning, people management, processes inside the team, and hiring. Currently working as a principal developer in Kotlin Multiplatform, overseeing all development of the Kotlin Multiplatform toolchain and working on deep infrastructural changes as necessary.