Nazar Gorelik

1. Contributed to development of a real-time trader monitoring platform for ETF and market-data workflows, improving trader decision time by 23% and contributing to measurable PnL growth. 2. Improved I/O-heavy backend workflows of many companies projects using Java concurrency patterns and virtual threads, reducing P95 latency by 13% and increasing throughput by 24% in benchmarked scenarios. 3. Designed and implemented a Spring Boot modular-monolith backend with REST APIs, WebSocket + STOMP. 4. Built contro

1. Modernized business-critical marine compressor software by incrementally replacing legacy components with Spring Boot, Spring Data JPA, Hibernate, and MySQL, increasing crash-free sessions from 87.9% to 98.7%. 2. Increased backend line coverage from 23% to 92% using unit and integration tests, reducing regression risk during legacy modernization. 3. Introduced Flyway migrations, Dockerized environments, and CI/CD to make releases safer and more repeatable. 4. Rebuilt the monitoring UI with React and Type

1. Contributed to a large-scale analytical platform for Yandex Delivery in a 40-engineer environment, focusing on driver-facing metrics, account data, and operational reporting. 2. Integrated with legacy settlement services and delivery-operation services to provide wallet balance, payout history, delivery statistics, ratings, and bonus-progress data. 3. Contributed to driver-facing analytics improvements during a period where satisfaction increased from 3.1 to 4.7 / 5. 4. Expanded the automated test suite