Agent Harness Engineer (Remote)
Viktor
About the position
Join a fast-growing tech startup as an AI Agent Engineer, building and improving AI agents for various integrations. Work directly with founders in a small, high-trust team environment.
Tech stack
- python
- typescript
- react
- ai
Requirements
Required:
- You've personally built or significantly modified an AI agent harness, and can describe the trade-offs you made
- You've made an agent reliably close the loop: tests, linters, typecheckers, browser verification, whatever stops it hallucinating success
- Agentic coding is your daily workflow, and you've stress-tested models and harnesses across the frontier
- Genuine interest in how AI works. You've read the papers and have opinions about evals
Nice to have:
- Previous AI engineering experience: agents, harnesses, eval infrastructure
- Previous founder or early-stage builder
- Open source contributions to the AI tooling we live in
Responsibilities
- Build the agent runtime: the loop where it plans, acts, and verifies its own work instead of declaring success it didn't earn
- Make the agent fluent with tools: composition across many integrations, recall, and the skill files that keep the right functions at hand
- Grow what the agent can do: memory it can trust, skills it writes for itself, work it runs on its own
- Ship product: features that reach users through Slack and Teams within hours
Benefits
- Top-of-the-market salary and the kind of ownership that only exists at this stage
- Work from wherever you're sharpest; we default to async and gather in person a few times a year