Janek Laudań worked on matsim-org/matsim-libs, focusing on simplifying configuration for QSim traffic dynamics and inflow capacity. He implemented targeted deprecations in Java, removing legacy options to streamline software configuration and reduce complexity for downstream users. Janek’s approach improved maintainability by clarifying configuration paths and aligning options, which also supported easier onboarding and reduced support needs. Additionally, he updated CI/CD workflows using YAML and GitHub Actions to reflect the branch rename from master to main, ensuring reliable pipeline execution. His work demonstrated depth in both API design and infrastructure, addressing both feature development and critical maintenance tasks.