Founding Backend Engineer — Fintech Infrastructure
Summary
The Founding Backend Engineer builds and owns Fynliq's backend infrastructure—Node.js/TypeScript APIs, PostgreSQL architecture, authentication, geolocation, rewards processing, and Plaid-style fintech integrations—working closely with the founder and early team to turn a prototype into a scalable beta in a remote, equity-first startup.
Compensation: 0.5% – 1.0%
Fynliq is building an AI-powered, location-based rewards platform that helps consumers get more value from everyday spending.
We’re looking for a Founding Backend Engineer to help build the infrastructure behind our mobile product and turn our working prototype into a scalable beta.
You’ll help build:
- Backend APIs and services using Node.js/TypeScript
- PostgreSQL database architecture
- User authentication and account systems
- Merchant, offer, and campaign infrastructure
- Geolocation and offer-delivery logic
- Transaction matching and rewards processing
- Points and revenue ledgers
- Webhooks and third-party API integrations
- Plaid/Kard-style fintech integrations
- Analytics and event tracking
- Secure, scalable infrastructure for future growth
We’re looking for someone who can take ownership of backend architecture, move quickly, communicate clearly, and make practical engineering decisions in an early-stage startup.
You’ll work closely with the founder, COO, mobile engineers, and other early team members to shape Fynliq’s technical foundation from the ground up.
Compensation: Fynliq is currently pre-revenue. This is an equity-first opportunity with no cash compensation at this stage. Equity depends on experience, contribution, and commitment and will be subject to formal agreements and vesting.
Remote and flexible.