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Posted 5mo ago•Warsaw or Munich onsite

Agent Harness Engineer

MiddleOn-site (Warsaw or Munich onsite)€3,500 – €5,000 / mo
Required Skills
PythonNext.js
Job Description

The Short Version

You're the person who makes Viktor do more things, for more customers, more reliably. You've built agents before (runtime, tools, memory, evals) and have opinions about what makes them work. You ship the day you write the code and reach for agentic engineering by default. If you've never built an agent, this isn't the role.

 

The Hard Part

We're building a harness ready for AGI. Models keep getting better on their own; the harness decides how much of that intelligence turns into real work. Viktor shouldn't wait to be handed tasks. It should explore what a company is doing and automate it on its own.

Getting there is context engineering at the frontier: how the system prompt, skills, memory, and tools interact on diverse, complex problems, and how that interplay holds up across the real work of tens of thousands of workspaces.

 

What You'll Actually Do

  • Build the agent runtime: the loop where it plans, acts, and verifies its own work instead of declaring success it didn't earn.

  • Engineer the context: shape how the system prompt, skills, memory, and tools combine, and how

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