Founding Growth Lead

Kastle · San Francisco

MarketingRevenueFullTime

Kastle is hiring a Founding Growth Lead in San Francisco, California (full-time). Posted 25 September 2026. Apply directly on Kastle's own careers site — no account needed.

About Kastle

Kastle is building the AI employee for banks. We work with some of America's largest financial institutions, helping them scale their contact center and compliance operations using autonomous AI Agents that process payments, originate loans, and help customers get a world class experience during the biggest financial decisions of their lives. We've processed over $2 billion in transactions and have raised a $24M Series A led by Insight Partners and Y Combinator. If you are interested in building AI that is applied in the real world where precision, reliability, and performance matter and redefine access to credit across the world, apply below.

About the role

We’re looking for a Founding Growth Lead to build the systems and campaigns that bring Kastle into new accounts and markets.

You’ll figure out who we should reach, what matters to them, and how to get in front of them. You’ll write the message, launch the campaign, build the tools behind it, measure the response, and use what you learn to improve the next one. You’ll also own the product story across our website, sales materials, newsletter, and events.

This is a hands-on role with wide ownership. The right person is an excellent writer and a fast operator who can build with data, automation, and AI tools. They have the taste to make Kastle memorable and the discipline to see whether their work creates real sales opportunities.

What you’ll do

A project you might own

Build a market map that is living and auto-updates daily. Start with the accounts and buyers we want to reach. Connect them to our existing relationships, outreach, meetings, customers, and events. Create a way for the map to stay current as the team books new calls and launches new products then use it to decide which accounts to pursue and what to say to them.

Who you are

You may have worked in growth, product marketing, GTM engineering, founder’s office, or built something yourself. We care most about what you’ve personally created and the results it produced.

How to apply

Send your resume or LinkedIn profile and one example of a campaign, event, or internal tool you built that you are proud of. Tell us what you owned, how you made decisions, and what happened as a result.

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