We’re looking for an intern to start asap, in person in San Francisco.
As an intern, this will be the most intense, competitive, and transformative experience of your life. You’ll work directly with the founders and a small team of exceptionally smart, driven peers who are building the operating system for consumer lending.
You will:
Ship real products.
Touch every part of the business from customer support, growth, operations, engineering, and sales.
Work directly with founders and unblock them
Handle the hardest, most boring, least glamorous tasks — without flinching.
Operate with extreme autonomy in an unstructured, high-paced environment.
Take vague prompts like “build something that helps the company grow” and turn them into working systems — on your own, or by rallying others to help.
Ideal candidate:
Relentlessly resourceful
Learns fast, moves faster
Cares about quality
Very Technical
Can start next week
If that’s you, email us: founders at kastle dot ai. Just tell us why you’re a fit and add “Founder Intern” in subject. Keep it short. We’ll know.
About KastleKastle is automating manual workflows for the financial services industry using AI agents. We work with the largest mortgage lenders in America and are hiring!
Skills Required
- In-person in San Francisco
- Available to start immediately / can start next week
- Very technical
- Relentlessly resourceful
- Learns fast and moves quickly
- Cares about quality
- Ability to operate with extreme autonomy in an unstructured, high-paced environment
- Willingness to handle the hardest, most boring, least glamorous tasks
- Can take vague prompts and turn them into working systems independently or by rallying others
- Comfortable working directly with founders and cross-functional teams
What We Do
Kastle AI is an AI platform for consumer lending and servicing that provides an AI operating system to automate borrower interactions, ensure compliance, and reduce costs for mortgage lenders. Using AI voice agents, the platform integrates with existing contact centers and payment systems to modernize operations without disruption, managing high-volume phone calls from loan inquiry to payoff.








