Worked on release engineering for the uber/NullAway repository, focusing on preparing and finalizing version 0.12.4. This involved updating the changelog and locking the release version in gradle.properties, ensuring accurate documentation and reliable version control. Leveraged Gradle for build management and Markdown for documentation updates, laying the groundwork for the next development cycle by incrementing to 0.12.5-SNAPSHOT. The approach emphasized reducing release risk and streamlining deployment readiness, with all steps carefully recorded and committed for traceability. The work demonstrated a methodical process in release and build management, though it was limited in scope to a single feature update.