Founder Intern (now and Summer 2026)

Kastle • San Francisco, CA

33d • Onsite

About The Position

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. 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!

Requirements

• Relentlessly resourceful
• Learns fast, moves faster
• Cares about quality
• Very Technical
• Can start next week

Responsibilities

• 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.

What This Job Offers

• Career Level: Intern
• Education Level: No Education Listed