Michal worked on the h2oai/h2o-3 repository, focusing on improving build automation and dependency management using Gradle. He addressed issues with benchmarking integration by implementing an opt-in approach for benchmark dependencies, ensuring that JMH was only included in specific modules when explicitly enabled. This change prevented unintended injection of benchmarking tools into the API configuration, reducing cross-module contamination and improving build hygiene. Michal also fixed a targeted leak in the u-benchmarks, which enhanced test reliability and CI stability. His work demonstrated a careful, detail-oriented approach to maintaining release quality and aligning dependencies with explicit configuration requirements.