Sander Wesseling developed foundational CI/CD and infrastructure enhancements for the OntdekIT/Software-BackEnd repository, focusing on enabling faster and more reliable deployments. He migrated container image hosting from Docker Hub to GitHub Container Registry, implemented semantic versioning for image releases, and established a comprehensive CI/CD pipeline using GitHub Actions. Sander configured local development environment variables and introduced issue templates to improve project governance and onboarding. By consolidating deployment migrations and improving health checks through container status, he addressed reliability blockers. His work demonstrated depth in DevOps, CI/CD, and containerization, leveraging Java, Shell, and YAML to deliver measurable improvements in deployment workflows.