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Founder Intern (now and Summer 2026)

Kastle

San Francisco, CA, USInternshipPosted August 7, 2026

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. …

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