Kiran Kolur worked on build system enhancements and codebase migrations across facebook/buck2-prelude and facebook/fbthrift. In buck2-prelude, Kiran enabled cache uploads for locally run kotlincd_jar and javacd_jar actions, integrating these workflows into the CI/CD pipeline to reduce cold-build times and improve performance. The implementation involved Starlark and Python, with validation of end-to-end cache behavior and telemetry integration to measure cache efficacy. In fbthrift, Kiran migrated Thrift library imports to the Autodeps2 Python structure, aligning the codebase with new conventions for improved compatibility and maintainability. The work demonstrated depth in build systems and Python-based migrations.