Senior Backend Engineer Microservices

Backend engineer with 4+ years building production microservices in fintech, crypto, and SaaS. At OptimusFox I designed and shipped 3-5 production microservices, integrated payment gateways (Stripe/PayPal) and blockchain/Web3 APIs, and set up CI/CD pipelines from scratch across fintech and crypto trading platforms. Currently building NexusPay — an event-driven fintech transaction platform targeting 10,000+ TPS with 7 independent NestJS microservices, Kafka, RabbitMQ, Saga-based distributed transactions, Redis, and full CI/CD. Open to backend or full-stack roles at startups. Fintech, crypto, and SaaS are my strongest domains.