Harsh Sen automated code quality enforcement across three Java APIs—Common-API, MMU-API, and FLW-API—by implementing GitHub Actions workflows that run Checkstyle on pull requests to master and develop branches. He standardized these repositories on a shared Checkstyle configuration with Java 17, ensuring consistent style checks and reducing manual review overhead. Harsh also improved repository hygiene by updating .gitignore files to exclude generated logs, preventing accidental commits of output files and enhancing reproducibility. His work focused on CI/CD best practices and code quality automation, delivering three new features in one month and establishing a maintainable, unified approach to code standards.