Backend Developer
Wildberries
PRO WB — EdTech platform for educating and supporting entrepreneurs working with Wildberries, with 300,000 MAU. WH School — B2C platform for training and hiring IT interns. WH Tech — B2E platform for automating internal processes of the company's warehouse IT department, serving 1,000 users. Responsibilities: - Designed architectural solutions and developed microservices in Go. - Developed integrations with internal and external services and ensured reliable communication between systems. - Participated in technical design, requirements analysis, and task decomposition. - Collaborated with Frontend, QA, Design, and Product teams throughout the full development lifecycle within Agile/Scrum processes. Key Achievements: - Redesigned the microservice data access layer by eliminating unnecessary decomposition and reducing the number of PostgreSQL queries, which improved average response time by 5x, from ~300 ms to ~60 ms. - Introduced an observability stack based on Prometheus, Grafana, and Jaeger, simplifying incident detection and troubleshooting. - Designed and implemented the backend of an LMS platform from scratch within 6 months, using CQRS and an API Gateway architecture - Initiated the decomposition of a monolithic application into microservices using Domain-Driven Design (DDD) principles. - Delivered an end-to-end testing flow within 3 weeks, including subsequent data retrieval from internal services, MSP.RF, and My Business Moscow.
