Hi, I'm Dan, a 21-year-old developer based in Korea.

I'm building Brello, a tool that monitors AI API keys for indie devs and small teams running AI features in production. It alerts you when usage looks off (a leaked key, a sudden spike, or one user abusing your app) and walks you through what to do next, before it turns into a surprise bill.

Where it's at: early. The free key scanner is live, and I've been helping leak victims through refund cases for free to learn what actually works. The main product is in progress.

Background: I previously co-founded Haven, where I built Lynx, an observability and control product for AI agents. I've also built an OAuth2/OIDC provider template and other open-source projects. I handle product and engineering.

Why a co-founder: I'm building solo right now, and I want someone who understands US developers and can lead growth, sales and user acquisition. Technical is a plus, not a must. I'd love someone who thinks about product direction with me, not just sales.

How I work: I'm happy to work US hours and prefer talking a lot over voice calls. I'd start with a short trial project together to see how we work before committing.

I am seeking a

Business Development cofounder

Industry

Software as a Service (Saas)

Startup Location/s

Anywhere

Business Stage

Business Plan

Funding Stage

Self-Funded / Bootstrapped

My Location

Other

Project Type

Full-Time Project

Other Info

Worked at a Startup