Senior Product Engineer - Agentic AI

Payments might seem slick for consumers, but businesses still trade with each other manually . Every year, millions of people work to exchange documents, emails and phone calls, and send checks and bank transfers worth tens of trillions of dollars .

Lunos is transforming this sleepy world of B2B payments, starting with an AI partner that ensures businesses get paid by managing their receivables just like a human would. Well, how they would if they worked on it 24/7, never forgot anything and read every message ever sent to them.

We’re a small team with big ambitions, backed by top-tier VCs who were early backers of companies like Stripe and Airbnb. We’re building in a modern stack (TypeScript, Next.js, Vercel, Supabase/Postgres, Tailwind), blending powerful agentic AI architectures, curated LLM pipelines, quantitative methods and robust SaaS foundations.

We’re looking for Founding Engineers who:

• Are deeply curious and passionate about building products users truly love
• Get frustrated when things don’t move fast enough
• Want their voice to shape product decisions, tech choices, and company culture
• Enjoy the freedom and challenge of working across the stack, from intuitive UX and robust API design to AI architectures and prompt engineering
• Believe AI is fundamentally reshaping the world - and want to be part of it

Sound like your kind of adventure? Let’s talk.