Developed and integrated a multi-platform continuous integration configuration for the Zephyr SDK within the nrfconnect/sdk-nrf repository, focusing on expanding automated test coverage across supported platforms. Leveraging YAML for configuration management, the work centralized platform-specific rules into a single file, enabling targeted CI runs and reducing bottlenecks associated with platform-agnostic workflows. The approach utilized CI/CD automation and Zephyr Twister tooling to streamline feedback loops and catch platform-specific issues earlier in the development cycle. This feature improved maintainability and release quality by ensuring that cross-platform compatibility was validated consistently, reflecting a methodical application of testing automation and configuration management skills.