Ivan Marozau

- Developed and maintained multiple Java-based microservices for a complex enterprise platform, with a strong focus on scalability, encryption, and performance. - Optimized slow-performing endpoints for user investment data, reducing database query time by up to 50%. - Standardized reusable API logic, improving consistency and reducing integration time. - Acted as the only backend developer in the team, driving technical decisions and mentoring one junior developer.

- Maintained and extended a legacy Spring-based web application for booking multi-modal transport tickets. - Refactored payment system logic by replacing hardcoded values with dynamic data stored in PostgreSQL. - Followed strict code review guidelines: submitted changes as one commit per task and passed double code review. - Resolved approximately 10 incidents and bugs weekly, contributing to system stability and maintainability.