---
title: "Founder Intern (now and Summer 2026)"
company: "Kastle"
company_url: "https://www.remjobs.works/companies/kastle"
url: "https://www.remjobs.works/job/kastle-founder-intern-now-and-summer-2026-4d3ccfe9-949c-4d67-82fa-327ba8202b10"
apply_url: "https://jobs.ashbyhq.com/kastle/2c764341-e028-4736-a1a7-0d5faf16e592"
workplace: onsite
location: "San Francisco"
employment_type: full-time
seniority: internship
role: other
region: united-states
date_posted: 2025-09-09T04:51:50.522Z
first_seen_by_remjobs: 2026-08-27T09:28:44.945Z
---

# Founder Intern (now and Summer 2026)

**Kastle** — San Francisco

Apply: https://jobs.ashbyhq.com/kastle/2c764341-e028-4736-a1a7-0d5faf16e592

## About Kastle

Kastle is an AI platform for loan operations. We help banks across the United States collect payments, verify new borrowers, and qualify new loan inquiries over the phone. 

Rishi and Nitish met at UIUC where they graduated with degrees in systems engineering and computer science.  Rishi was the founding Product Manager for Redfin’s Mortgage Marketplace at 22 and grew the business from $3M to $6M in revenue in 9 months. Nitish patented Verkada’s motion search system and was the youngest tech lead at the company at 23.

While building Redfin's Mortgage Marketplace Rishi realized traditional lenders didn't have the infrastructure to service online inquiries and were losing customers. Nitish and Rishi are building Kastle to help traditional financial services companies better interface with their customers.

## About the role

##### 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 weekIf 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!

---

Source: Kastle's own career page, read by RemJobs. Canonical HTML version: https://www.remjobs.works/job/kastle-founder-intern-now-and-summer-2026-4d3ccfe9-949c-4d67-82fa-327ba8202b10