Full Stack Engineer

Rounds
San Francisco, CA

We’re building the future of hiring — one that replaces resume noise and outdated interviews with real, decision-grade work trials. Our platform helps fast-growing companies evaluate how candidates actually think, build, and work with AI in real-world scenarios.



What You’ll Do

  • Build and ship full-stack features across frontend, backend, and infrastructure
  • Translate real-world customer needs into product capabilities
  • Design and implement APIs, workflows, and developer-facing tooling
  • Own features end-to-end — from architecture to deployment to iteration
  • Debug edge cases across environments and production systems
  • Collaborate closely with founders, engineers, and early design partners
  • Contribute to product direction based on hands-on user feedback



What This Role Is

  • High-agency, high-ownership
  • Fast shipping cycles, real users, real stakes
  • Ambiguous problems, imperfect data, strong opinions
  • Product-engineering hybrid work
  • A seat at the table for roadmap decisions



Who You Are

  • Strong software engineer who enjoys customer context, not just clean abstractions
  • Comfortable shipping quickly and iterating in production
  • Excited by ambiguity and building 0→1 systems
  • Able to clearly explain technical concepts to non-engineers
  • Energized by early-stage environments



What We’re Looking For

  • 0-2 years of experience as a software engineer (or equivalent)
  • Strong fundamentals in JavaScript / TypeScript
  • Experience building across the stack (frontend + backend preferred)
  • Experience working with APIs, distributed systems, and debugging in live environments
  • Familiarity with modern frontend frameworks (React, Next.js, etc.)
  • Bonus: Experience with AI tooling, LLMs, or developer tools
  • Bonus: Startup experience or customer-facing engineering experience
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