Selfin (YC F25)
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
Bachelor, Master or PhD in Computer Science or related engineering degree from a top university
Strong Python skills and hands‑on experience with LLMs or GenAI tools
Willing to work onsite in San Francisco or London (we sponsor US/UK visas)
Bonus points for: hackathons, publications, side projects, startup experience
People that are excited to own real responsibility from day one
Compensation
$100K+ salary (depending on skills and experience) + equity
US/UK visa sponsorship
Key role in an AI fintech shaping the future of banking
Autonomy, speed, and full visibility into product and company building
Referrals increase your chances of interviewing at Selfin (YC F25) by 2x
Get notified about new Software Engineer jobs in San Francisco, CA.
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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
Bachelor, Master or PhD in Computer Science or related engineering degree from a top university
Strong Python skills and hands‑on experience with LLMs or GenAI tools
Willing to work onsite in San Francisco or London (we sponsor US/UK visas)
Bonus points for: hackathons, publications, side projects, startup experience
People that are excited to own real responsibility from day one
Compensation
$100K+ salary (depending on skills and experience) + equity
US/UK visa sponsorship
Key role in an AI fintech shaping the future of banking
Autonomy, speed, and full visibility into product and company building
Referrals increase your chances of interviewing at Selfin (YC F25) by 2x
Get notified about new Software Engineer jobs in San Francisco, CA.
#J-18808-Ljbffr