Aleksandr Nechaev

I’m a Senior Backend Engineer with 10+ years of experience designing and building scalable distributed systems across fintech, banking, and insurance. I focus on production reliability, strong system design, and delivering measurable performance improvements.

At Neoflex, I led a migration from a blocking architecture (Spring MVC) to a reactive stack (Spring WebFlux + R2DBC), increasing system throughput by 30% and improving stability under peak load. I also designed and implemented a microservices-based car insurance platform with fault isolation and independent service deployment, reducing time-to-market by 20% and enabling seamless provider replacement.

I’ve built and modernized services for corporate banking and insurance, including a secure 2FA platform and mortgage insurance services with automated renewals and notifications—boosting customer retention by 15%. I’m hands-on with performance optimization, event-driven design, and backend patterns that stand up in real production environments.

Beyond traditional backend work, I’ve built an AI Knowledge Assistant (RAG Platform) as a personal project, combining embeddings generation, vector similarity retrieval, and LLM integrations to support conversational Q&A over private documents. I also enjoy mentoring through code reviews and technical leadership, helping teams improve delivery velocity and engineering quality.