Yulian Hakh worked on the ITA-Dnipro/Forum_UPD repository, focusing on backend performance and deployment optimization over a one-month period. He improved build efficiency by restructuring the Dockerfile, reducing image layers, and consolidating commands to accelerate build times. Yulian also introduced Redis caching through docker-compose.db.yml, configuring persistence and automatic restarts while tuning Redis settings for better runtime performance. By removing redundant configuration files, he simplified the deployment process and reduced operational complexity. His work leveraged Docker, YAML, and Shell scripting, demonstrating a practical approach to containerization, caching, and DevOps, with an emphasis on maintainability and streamlined operations.