Founding Backend Engineer — Fintech Infrastructure
Core
Building scalable backend infrastructure for an AI-powered, location-based rewards platform.
Role type
Founding Backend Engineer
Builds
Backend APIs, database architecture, authentication systems, merchant/offer infrastructure, geolocation logic, transaction processing, and fintech integrations.
Domain
Fintech / Location-based rewards
Required skills
Node.js, TypeScript, PostgreSQL, API design, geolocation logic, transaction processing, fintech integrations, secure infrastructure design
Preferred skills
Early-stage startup experience, ownership mindset, rapid execution
Technologies
Node.js, TypeScript, PostgreSQL, Plaid, Kard
Responsibilities
Design and build backend APIs and services, architect PostgreSQL databases, implement user authentication and account systems, develop merchant and campaign infrastructure, build geolocation and offer-delivery logic, process transactions and rewards, integrate third-party APIs, design secure scalable infrastructure
Seniority
Founding, hands-on IC