Harness Engineer — AI Video Creation

Most engineers fix the bug. You build the system that fixes it overnight and tells you what it improved.

A young AI-and-creativity lab in San Francisco wants to make video as easy to create as code has become with AI assistants. Their first product is a desktop app that connects a large library of generative models, search, motion design and editing to the AI assistant you already use. It runs on your own GPU, which keeps it private, cheaper and smarter, and the launch got serious traction. The founders have built and sold two consumer and media companies, and one of them took an AI product to real revenue single-handedly. Their conviction: everyone understands video, but hardly anyone can make it.

What you'll own

• The core product, as founding engineer, working alongside a founder who keeps pushing the experimental edge
• A harness that improves itself and keeps the product stable. For example: each feedback click captures a screenshot plus the full error context, and an agent works through the night's errors, fixes what it can and reports what changed.
• Faster, cheaper video generation, with more magic for the user
• Making frontier, niche and open-source models feel like one seamless product
• Later on: small on-device models for parts of the creative workflow, together with the ML hire

What you bring

• Serious harness-engineering experience. Without it, this isn't the role.
• A T-shaped generalist who's strong on both front end and back end
• You follow the model frontier closely and know how to get lesser-known and open-source models working in a product
• You've built something similar and know what it takes when things break
• A sharp individual contributor rather than a manager
• A creative streak: you make music, create content, or have a real eye for art
• Roughly 3–8 years. Your work matters far more than your logos.

Bonus points

• You've worked on, or contributed open source to, AI video or creative tools
• You've built and launched an AI product on your own
• Experience with agent systems that improve themselves

What's in it for you

• $200k–$300k base + equity
• Founding-engineer ownership of a product with real momentum
• Visa sponsorship available

Good to know

• Full-time, on-site in San Francisco, 9-9-6. Best suited to someone ready to go all in right now.
• Process: first screen → co-working session → conversation on motivation and culture → offer

Does this sound like you? Apply now. If you're a match, we'll be in touch within 3 working days.

RnB Consultancy | Netherlands | 3604 AB Maarssen | KvK 71489703