At 2DWorkflow, I develop backend services for the Amazon SellerAnalytics Platform using Java 21, Spring Boot, PostgreSQL, Redis, and jOOQ. I optimized complex PostgreSQL queries, improving backend response times by approximately 30–40%.
At WeAreBrain, I developed and supported the Praxis / Brico eCommerce Platform with Java, Spring, and SAP Commerce. I implemented REST APIs and asynchronous integrations using AWS SQS and SNS, and performance testing contributed to approximately 25–30% lower checkout and backend processing latency.
Earlier, at N-iX and EPAM Systems, I contributed to backend development and customization for Hybris eCommerce projects. I implemented and maintained commerce functionality, developed scheduled jobs, and investigated production issues.
On a real-time social backend platform project, I built services with Java 21, Spring Boot, PostgreSQL, Redis, and Cassandra. I implemented WebSocket-based communication and location updates, and integrated Firebase notifications and external routing services.
