Founding Engineer — Reine Collective

Remote (LA / NYC preferred)

About Reine

Reine is the AI brand manager in every athlete's pocket. We help female athletes turn who they are into a brand that compounds — the strategy, the content, and the measurable outcomes. Three products on one intelligence engine: an identity and measurement product (Reine DNA), a content production product (Reine Make), and a partnership marketplace (Reine Marketplace).

The Role

This is a founding engineering role, employee #3. You're not inheriting a codebase and maintaining it — you're building the system that powers a new category of product, with full ownership of the architecture and the technical roadmap. You'll work directly with the founder on what gets built and why, ship decisions that affect real athletes within days not weeks or months, and solve problems at the intersection of AI, content production, and distribution at scale. The surface area is wide, the team is small, and nothing is abstracted away from you.

Tech Stack

• Mobile: React Native, Expo
• Backend: Cloudflare Workers (TypeScript)
• Database: Supabase (Postgres)
• AI layer: Anthropic + OpenAI
• Integrations: Direct platform APIs across major social platforms

What we're looking for

• You've built and shipped a product — not just features inside someone else's
• You've owned architecture decisions and lived with the consequences
• You're strong across the stack and don't wait for a spec to start building
• You've worked with AI/ML in production, not just prototyped with it
• You've operated in a small team or early-stage environment where scope is ambiguous and ownership is real
• You want to build a company, not just write code

What we offer

• Founding team equity — real ownership, not a gesture
• Salary commensurate with stage
• Full architecture deep dive available under NDA for serious candidates