Software Engineer; Founding Team

$180k-$220k + 1–2% equity

Want to join an AI startup early enough that “founding engineer” actually means something?

We're working with an AI startup building multimodal agents that are tackling a pretty huge real-world problem:
automating architecture and helping get housing built faster.

Their technology uses AI agents to understand architectural blueprints, assess building-code compliance and ultimately automate parts of the architecture process.

They’re now looking for a Founding AI Engineer to join the team in San Francisco.

This isn't a pure research role. They're looking for someone who combines strong software engineering with applied ML/AI experimentation ; this is ideal for someone who likes building, testing ideas quickly and figuring things out without needing a detailed roadmap.

You’ll be working across:

• Agentic AI and multimodal LLMs
• Python
• LLM evals and experimentation
• Supervised fine-tuning and model distillation
• Retrieval and context engineering
• Internal tooling for faster AI experimentation
• Real product problems alongside users

What they’re looking for:

1–6 years across software engineering / ML, ideally with hands-on experience building AI or LLM applications.

More importantly, you’ll be highly autonomous, comfortable running your own experiments and able to combine SWE speed with ML rigor
. You should also be someone who already uses tools like Claude Code, Cursor or similar as part of your day-to-day development workflow.

If you're looking for a role where you can have a massive amount of ownership, work directly on agentic AI and join while the technical foundations are still being built, I'd love to hear from you.