Jonathan Barber automated and enhanced CI/CD workflows for the input-output-hk/acropolis repository, focusing on main-branch reliability and test coverage. He developed GitHub Actions pipelines using YAML and Shell scripting to automate builds, tests, and coverage reporting, ensuring alignment with the main branch for consistent integration. Jonathan also implemented overnight omnibus bootstrap test automation, leveraging shell scripts to run long-running CI tasks and improve feedback cycles. He addressed robustness in the bootstrap test script by ensuring toml-cli installation via pipx, reducing setup failures. His work improved test visibility, stabilized development, and enhanced maintainability through clear documentation and workflow readability improvements.