Santtu Pajukanta enhanced the espoon-voltti/luontotieto repository by building robust security automation and modernizing dependency management workflows. He introduced a dedicated GitHub Actions pipeline using YAML and JSON to enable CodeQL-based code security analysis, ensuring continuous scanning on pushes, pull requests, and a weekly schedule. Santtu also implemented Renovate Bot configuration to automate and govern dependency updates, establishing clear rules for update schedules, autodeploys, and module labeling. By aligning CI/CD processes to consistently manage and disable automated update tools where needed, he improved workflow stability and reduced build noise, demonstrating a focused approach to DevOps and code security practices.