Worked on enhancing build reproducibility for the cloudflare/cloudflared repository by implementing deterministic build processes. Addressed the challenge of inconsistent build artifacts by modifying the Makefile to source the build timestamp from the RELEASE_NOTES file rather than the system date, ensuring that builds are consistent across different environments and continuous integration pipelines. This approach replaced the use of the standard date command with a version that references file modification times, improving traceability and reliability of release artifacts. Utilized Makefile scripting and expertise in build systems to deliver a solution focused on reproducible builds, contributing to more reliable and auditable releases.