Software Founding Engineer

Software Founding Engineer

Join to apply for the Software Founding Engineer role at Selfin (YC F25)

Base pay range

$100,000.00 / yr - $200,.00 / yr

About Selfin

Selfin is a stealth fintech startup building the first AI bank backed by Y Combinator. Team formed by students from MIT, Stanford, and Imperial, with experience at NASA, Bank of America, BCG, Bloomberg, Rolls‑Royce and Revolut. Now we’re looking for people bold enough to build something crazy from scratch — and smart enough to do it right. Join the waitlist so we can give you access to our product at https : / / selfin.app. You should try our product to make sure you are interested in the role!

About The Role

We’re now looking for highly motivated Software Founding Engineers to join us in San Francisco and build core parts of the product across AI, backend, and frontend.

Responsibilities

• AI / LLM : LLM training (o4 / 5, claude), prompt engineering, fine‑tuning
• Backend : Python, Cloud infrastructure (GC), API integration
• Frontend : Swift (iOS), Flutter, HTML, CSS, JavaScript
• Help design secure, scalable systems for financial data
• Work directly with the founders and shape product and tech direction
• Move fast and independently—this is not a narrow role

Qualifications

Compensation

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