During the month, contributed to both the Cysharp/ZLinq and suitenumerique/docs repositories by delivering two features focused on reliability and security. In Cysharp/ZLinq, developed comprehensive unit tests for the SelectWhere method using C# and LINQ, ensuring correct filtering, handling of empty results, and preservation of order to align with standard LINQ behavior. In suitenumerique/docs, enhanced Kubernetes Helm charts written in yaml to support custom service account names, enabling workload identity federation and removing the need for embedded credentials. Demonstrated proficiency in DevOps practices, test-driven development, and infrastructure as code, resulting in improved deployment flexibility and security posture.