Sergey Antoninov

Senior Backend / Software Engineer with extensive experience in designing and building high-load, distributed systems. Strong background in Java ecosystem (Spring Boot, Spring Cloud), relational and NoSQL databases (PostgreSQL, Oracle, Redis), and cloud architectures (AWS).

Worked on complex financial and trading systems, including clearing systems and crypto-exchange integrations, real-time data processing, FIX/WebSocket APIs, and automated trading and arbitrage solutions. Experienced in microservices, system architecture, performance optimization, and scalability.

Comfortable working across the full stack when needed (React, Vite), but primarily focused on backend, infrastructure, and system design. Has experience in technical leadership, architecture decisions, and mentoring, and is targeting Staff / Principal Engineer roles.