Leonenko Group LLC
All open rolesEngineering

Senior Full-Stack Engineer

Full-timeRemote (US)Product Engineering$150K – $190K + equity
Posted 3 weeks agoClosing soon — Applications close Aug 22

You will work across the whole stack on our consumer products, shipping features that are fast, private, and quietly beautiful. We are a small team leaning on agentic AI, so you will have unusual ownership and the tools to move quickly without cutting corners.

Apply now

What you'll do

  • Design, build, and ship user-facing features across web and API layers
  • Own quality end to end: types, tests, performance, and accessibility
  • Collaborate directly with design and the founder on what to build next
  • Use AI tooling to move faster while keeping human taste in the loop

What we're looking for

  • 5+ years building production web applications
  • Strong TypeScript, React, and Node.js; comfortable in a strict-typed codebase
  • A track record of shipping and maintaining real products, not just prototypes
  • Care for craft: you sweat the details users feel

Nice to have

  • Experience with Next.js, edge/serverless runtimes, or Cloudflare Workers
  • Comfort working alongside AI agents in your daily workflow
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