Sohail Badghisi

I’m a Senior Frontend Engineer with 5+ years shipping production React, Next.js, and TypeScript applications, currently remote for a UK-based scientific-instruments company. I focus on building interfaces that stay fast under real workload pressure—then prove it with profiling and measurable results.

At eProfiler Solutions Ltd, I led frontend development of TesterAPP for 200+ lab scientists, cutting experiment setup from 12 to under 4 minutes through a redesigned instrument-control UI. I also built real-time visualization pipelines handling 1M data points at sub-150ms latency, reduced render latency 38%, and improved main-thread blocking by 42% using React Profiler and Chrome DevTools.

I like working close to the data and the systems behind it. I contribute to Python backends (Flask, WebSockets, REST) when it accelerates delivery—scaling an ACM Server throughput 7.5x (2K → 15K req/hr), cutting p95 latency 40%, and enabling device communication workflows up to 10kHz while reducing disconnection incidents by 90%.

Earlier, at Pomtech ICT Solutions, I developed real-time UIs for OnAirNow with WebSocket updates across 10+ channels, improving metadata propagation to sub-500ms and cutting stale-state bugs by 80%. I’ve also optimized builds and reliability at Lajward Technologies, boosting Core Web Vitals from 70 to 90+ and increasing unit-test coverage from 45% to 82%—all while keeping accessibility and quality front and center.