Senior Node.js Backend Engineer

Senior Backend Engineer with 5+ years of experience. Specializes in high-concurrency architecture, solving race conditions under scale, and resolving deep technical bottlenecks. Recently optimized a monolithic workflow, reducing P95 latency by 50% while sustaining 1M+ monthly requests with a 99.996% crash-free rate. Currently operating heavily in the Node.js/TS ecosystem, while actively expanding into Golang. Seeks a mature engineering culture that values clean architecture, robust code reviews, and pragmatic problem-solving over hype-driven development. Available for B2B/Contractor roles.