Founder Intern (now and Summer 2026)

San Francisco

### About the role 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 Kastle Kastle is automating manual workflows for the financial services industry using AI agents. We work with the largest mortgage lenders in America and are hiring!