Charlie Blackwood contributed to the percona/pmm repository by delivering two targeted improvements focused on maintainability and security. He upgraded the GolangCI-Lint tool from version 1.55.2 to 1.62.0 within both the GitHub Actions workflow and the Makefile, enhancing static analysis coverage and enabling earlier detection of code quality issues. Additionally, he added the OpenSSF Best Practices badge to the project’s README, signaling a commitment to security best practices. His work demonstrated proficiency with build tools, CI/CD processes, and documentation using Makefile, YAML, and Markdown, resulting in higher code quality and increased trust among users and contributors.