Dilshodbek Xojametov

◦ Designed and maintained critical backend services powering the Hambi superapp with 3–4M users and 2M+ MAU.

◦ Built and rewrote services (Auth, Stories, Integration, Admin, Notification) using Python (FastAPI, Django) and Rust (Axum, SQLx).

◦ Rewrote the Stories and Integration services in Rust, improving performance by 2–3× and reducing resource usage by 10× under production load.

◦ Reduced average API response time by 30% through Redis caching, asyncio-based background tasks and event-driven architecture.

◦ Prevented service downtime during high traffic by proactively resolving DB pool exhaustion—closed connections before async external API calls to keep systems stable

◦ Built dev-only API proxy decorator to enable local testing of external API integrations.

◦ Achieved 80–90% test coverage using pytest, pytest-asyncio, pytest-mock and async-factory-boy.

◦ Delivered tasks with business awareness, regularly suggesting improvements that influenced feature design.

◦ Mentored teammates and conducted code reviews to ensure scalable, maintainable code across the team.

◦ Migrated legacy PHP services to FastAPI microservices, improving system reliability, reducing technical debt, and accelerating feature delivery.

◦ Improved system maintainability and testability by introducing modular design, clean architecture, and automated testing.

◦ Contributed to outsourced backend projects across various industries, building APIs and features using Python (Django/FastAPI).

◦ Balanced rapid delivery with clean, testable code for long-term maintainability.