Niko Kivel focused on enhancing the reliability and maintainability of the bluesky/ophyd-async repository by systematically replacing production-time assert statements with explicit exception handling. Using Python, he refactored core modules to introduce clear error signaling, favoring exceptions such as RuntimeError and ValueError to prevent silent failures in production environments. He reinforced code quality by updating the Ruff configuration to disallow asserts outside test directories and expanded test coverage to ensure robust type safety. Through these targeted improvements in error handling, refactoring, and testing, Niko reduced runtime crashes and improved the observability and resilience of the codebase for production use.