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HappyRobot

Senior Software Engineer - Full-Stack

Senior Full-Stack Engineer owns end-to-end product sections, building scalable web apps and voice AI infrastructure. Requires 5+ years experience with TypeScript/Next.js frontend and Go backend expertise.

220k – 250kSan Francisco, CAFullstack EngineeringOnsite5+ YOE
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About the role

What We’re Looking For

  • 5+ years of professional experience
  • Strong generalist — you’re excellent on either the front end or back end, and comfortable working across the stack
  • Front-end expertise with TypeScript and Next.js, including performance, UX, and clean architecture
  • Back-end experience with Go, building reliable, scalable systems
  • Product-minded engineer who understands tradeoffs between speed, quality, and scale

What You’ll Do

  • Build and own entire sections of the product, including major parts of the web application
  • Design, implement, and ship features end-to-end — from UI to APIs to infrastructure
  • Help optimize and scale our voice AI infrastructure, improving latency, reliability, and cost
  • Collaborate closely with founders and teammates to shape product direction
  • Ship to production frequently and iterate based on real user feedback

Skills

TypeScriptNext.jsGoJavaScript

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