Niklas Schroeter enhanced the zalando/skipper repository by implementing secure secret management for OpenID Connect (OIDC) client credentials. He replaced hardcoded credentials with dynamic sourcing from a Secrets Store, reducing the risk of credential leakage and enabling seamless secret rotation across Kubernetes deployments. This feature improved both the security posture and operational flexibility of OIDC integrations within the codebase. Niklas addressed credential handling issues referenced in issue #3895 as part of this work, demonstrating a security-first approach. The project leveraged Go for backend development and integrated API development practices, reflecting a focused and thoughtful engineering contribution within a short timeframe.