Evgenia Kotliarova

- Architected a multi-tenant SaaS backend (replacing per-client instances), enabling self-service onboarding and reducing infra overhead. Drove load testing + performance refactoring to scale for major traffic growth. - Designed and implemented a trip-building service from scratch, encapsulating complex third-party logic behind a clean REST API. - Led integration of a new data provider from analysis to release, hiding provider complexity behind a generic, client-friendly API.

- Key Java back-end engineer in the Fintech team, building and operating payment-related services for M.Video’s ecosystem. - Designed the architecture for installment payment and QR-based payment services, defining API contracts and failure-handling strategies. - Integrated payment services with internal systems (orders, accounting, notifications) using event-driven architecture with Kafka. - Interviewed Java back-end developers.

- Back-end developer for the multi-platform, high-load game Mushroom Wars 2. - Optimized the weekly offers workflow (core revenue driver): reduced offer setup time from ~30 minutes to ~1.5 minutes. Also, the need to create new offers with the same price every week on gaming platforms (Apple store, Google play, etc.) was removed, which greatly facilitated the work of game designers. - Improved game loading performance by ~30% through targeted backend optimizations and refactoring.

- Built and maintained a REST API for large-company tax reporting. - Updated backend business logic to stay compliant with tax authority requirements. - Participated in real-time support: monitored system health and reacted immediately to incidents to keep services stable. - Strengthened reliability and maintainability by developing automated tests, fixing bugs, and improving overall code quality. - Completed a 3-month Kotlin internship in another team.