Worked on the Shopify/ci-queue repository to enhance the reliability of failure reporting and the CI/CD workflow. Addressed a bug that caused crashes during JSON dumping by implementing robust handling for invalid UTF-8 sequences in failure messages, using Ruby’s force_encoding and scrub! methods, and added regression tests to ensure stability. Upgraded the ci-queue runtime to version 0.93.0, incorporating recent improvements and bug fixes. These changes, developed with Ruby and Ruby on Rails, improved the stability of the failure-reporting path, reduced downtime risk, and enabled faster, more reliable build feedback for engineers working with the CI pipeline.