Worked on the Liatoshynsky-Foundation/lf-client repository to enhance CI reliability, security, and configuration consistency. Integrated MongoDB into the GitHub Actions CI workflow, enabling tests to run against a live database instance and improving test realism. Hardened Docker image security by updating the .dockerignore file to exclude sensitive .env files, reducing the risk of environment variable leakage. Improved configuration hygiene by ensuring consistent formatting in .env.example files. Utilized Bash, YAML, and Docker to implement these changes, demonstrating a focus on practical DevOps solutions that address both security and reliability within the CI/CD pipeline over the course of the month.