Canada based full stack developer with 5+ years shipping production web applications across SaaS, eCommerce, and marketplace platforms. Harshdeep Singh works primarily in React, TypeScript, and Node.js, and is a Toptal member — recognized in the top 3% of global freelance talent. Lately, his work has shifted toward AI automation: integrating OpenAI and LangChain to build intelligent workflows, and using browser automation to replace manual processes at scale. He treats AI not as a novelty but as infrastructure — something that makes production software genuinely faster to build and easier to maintain. If you're looking to hire a React developer in Canada who can own a feature end-to-end — from database to deployment — or need someone who understands where AI fits into a real product roadmap, this is the right place to start.