Anton Pampuha focused on backend enhancements for the GreenCityUser and GreenCity repositories, delivering three features that improved test coverage, data validation, and configuration management. He implemented unit tests for the Telegram feedback flow in the email subsystem, using Java and Spring Boot to align with SonarQube quality standards. Anton also introduced validation annotations to the UserTelegramFeedbackDto, ensuring data integrity for Telegram feedback submissions. In the GreenCity repository, he removed deprecated Fondy payment keys from YAML-based ClusterExternalSecret configurations, streamlining secret management. His work demonstrated depth in backend development, emphasizing maintainability, reliability, and support for evolving business processes without introducing bugs.