Bjur Parker developed dynamic build versioning and Docker tagging for the livekit/sip repository, focusing on improving release traceability and CI/CD efficiency. He implemented a system in Go that injects version information at compile time using ldflags, with the version derived from Git tags and passed as a build argument to Docker. By converting the version constant to a variable, he enabled dynamic substitution during builds, ensuring artifacts accurately reflect their source version. YAML was used to update CI/CD workflows, allowing automated extraction and propagation of version data. This work established a reproducible build process and reduced release risk for the project.