Kastle (YC S24) · 5 months ago
Founder Intern (now and Summer 2026)
San Francisco
Internship
Onsite
Intern
$100K/yr - $100K/yr
Start in 2026 SummerKastle is automating manual workflows for the financial services industry using AI agents. They are seeking an intern to work directly with the founders and a small team, tackling various business areas and contributing to product development.
Artificial Intelligence (AI)Financial ServicesMortgageReal EstateSaaS
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
Qualification
Required
Relentlessly resourceful
Learns fast, moves faster
Cares about quality
Very Technical
Can start next week
Company
Kastle (YC S24)
Kastle is a workflow automation tool for mortgage lenders and servicers.
Founded in 2024
11-50 employees
H1B Sponsorship
Kastle (YC S24) has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (1)
Funding
Current Stage
Early StageTotal Funding
$0.5MKey Investors
Y Combinator
2024-06-01Pre Seed· $0.5M
Company data provided by crunchbase