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Member of Technical Staff

Capy· Engineering
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San Francisco, CA$200k - $300k + equityFull-timePosted 2w ago

About the role

AI-focused full-stack role across Capy's product, owning end-to-end experience from interfaces to infrastructure, with hands-on coding, design, and product decisions in a fast-paced environment.

Responsibilities

  • Ship across the whole stack. One day is a new tool in the agent loop, the next is the React surface that shows what it did, the migration behind it, and the Kubernetes change that ships it.
  • Set the standard for agent UX. Threads, tasks, diffs, reviews, live machine desktops streamed from our Rust remote desktop: twenty-five agents running at once need an interface that stays legible.
  • Design in code. Take a feature from rough idea to a polished, animated, keyboard-first interface in the React web app and Electron desktop app.
  • Build the backend the agent runs on. Effect services over MySQL (Vitess on PlanetScale), realtime fan-out over NATS, the typed API and protocol every client shares, the git proxy, the worker that drains threads.
  • Push what the agent can do. New tools, better verification, tighter loops with CI and review, smarter task orchestration, and the provider layer across Anthropic, OpenAI, Gemini, and the rest.
  • Run the infrastructure. The Kubernetes clusters and IaC that deploy Capy, and the VM images and sandbox platform every cloud machine boots from.
  • Direct Capy on Capy. Most of your day is writing specs, steering agents, reviewing their PRs, and fixing the harness when it lets them down.
  • Talk to users. Developers running Capy on real codebases tell you what's wrong; you turn it into what ships that day.

Qualifications

  • Agent-native. Claude Code, Codex, Cursor, etc (or your own harness) is how you already work, and you have sharp opinions about where they fall short.
  • Fluent in our stack. TypeScript 7 on Node 24 and React in production, and typed functional code (Effect or the like) you can read and write without a ramp. You've shipped against MySQL, run something on Kubernetes, and touched a message bus like NATS.
  • Comfortable at every layer. A slow query, a broken websocket, a failing Helm release, and a misbehaving tool call in the same afternoon, and you don't wait for a specialist on any of them.
  • Taste in interfaces. You notice the four-pixel misalignment, you care about motion, hierarchy, and empty states, and you can point at shipped work that proves it.
  • Independent product judgment. You make the call on what to build and how it should feel without a PM or designer defining the problem first.
  • Fast without shortcuts. You verify your work, read your diffs, and would rather delete code than add an abstraction nobody uses yet.
  • In San Francisco. In a room with people doing the same.

Skills

Required:Agent-native developmentTypeScriptReactMySQL / VitessKubernetesNATS
Nice to have:Electron

Benefits

  • Medical, dental, and vision
  • Flexible PTO
  • Visa sponsorship and relocation support
Last updated Oct 18, 2026. Interested? Apply on the company site.
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About Capy

AI Software Engineer

Capy is an AI software engineer that ships dozens of features in parallel. It works end-to-end - autonomously triaging issues, executing code in isolated VMs, and pushing PRs to GitHub.

aiai-assistant
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