Worked on the spacemeshos/go-spacemesh repository to enhance the reliability of continuous integration workflows by stabilizing the system test environment. Focused on DevOps and CI/CD practices, the developer introduced a feature that pins the Kubernetes node version within GitHub Actions, using YAML to define the workflow configuration. This approach removed the dependency on the latest node version, addressing issues with test flakiness and version drift. By ensuring deterministic test environments, the work improved reproducibility of test results and accelerated feedback cycles for the development team, contributing to a more stable and predictable CI infrastructure without introducing new bugs.