During March 2026, this developer focused on enhancing deployment workflows for the mbta/arrow and mbta/api repositories by establishing robust containerized deployment infrastructure. They implemented Docker configuration, Dockerfiles, and .dockerignore files, integrating these with GitHub Actions to automate CI/CD pipelines and streamline releases across multiple environments. In mbta/api, they introduced granular Docker deployment tags, enabling more precise versioning and simplified image management. Their work emphasized environment parity and reduced manual intervention in deployment processes. Utilizing technologies such as Docker, Elixir, and JavaScript, they delivered two new features that improved release velocity and operational consistency without addressing any bug fixes.