Marek Kolodziejczak enhanced the kyma-project/api-gateway repository by focusing on the reliability and observability of its CI test suite. He updated the test infrastructure to run against newer Kubernetes clusters, using Bash and YAML to refine end-to-end and compatibility tests. Marek improved deprecation monitoring by ensuring that deprecation reports are uploaded regardless of test outcomes, which increased visibility into deprecated features and readiness for future changes. His work stabilized the CI pipeline, reduced flaky test signals, and provided faster feedback for developers. This targeted feature work demonstrated a solid understanding of CI/CD, GitHub Actions, and Kubernetes testing practices.