Tymofii Berezanskyi

Java Backend Engineer, building production services for a high-load SaaS platform on Java 21 and Spring Boot 3. Key achievement: redesigned core data pipeline ORM interactions and introduced batch processing — reduced PostgreSQL query count from 30 to 3, cutting response latency 10× in production. Built and maintained scalable RESTful APIs across PostgreSQL, with structured error handling and centralised logging that reduced mean time to resolve incidents. Maintained high test coverage with JUnit 5.