Full Stack Engineer | NYC + Remote | $70K–$110K + Rev Share + Stock Equity Options

## About the role 8-month-old bootstrapped fintech. Profitable. Processing real money across Stripe, Adyen, Airwallex, NMI + 8 more. Biggest merchant: $20M/month. 12 enterprise B2B contracts in under a year. We're hiring Full Stack Engineers to build payment infrastructure — not CRUD apps. Your code processes real transactions for merchants doing $50K–$5M+ MRR. You ship from day one. ## What you'll build - Payment processor integrations (strategy-pattern architecture across 9+ PSPs) - Checkout flows — card, Apple Pay, Google Pay, PayPal with PCI Level 1 vault tokenization - Subscription billing — CIT/MIT transaction flows, auth holds, captures, refunds, voids - Webhook consumers normalizing async events from Stripe, Adyen, NMI, Airwallex - Shopify integrations — Admin API (GraphQL), Storefront API, script injection, selling plans - Checkout latency optimization (target: sub-5s) ## Stack - Next.js - NestJS/TypeScript - Supabase (Postgres) - Vercel - GitHub Actions - Stripe Connect (OAuth) - Adyen - Airwallex - NMI - Shopify Admin API (GraphQL) - Linear ## Must-haves - Next.js - NestJS - TypeScript - SQL/Postgres - Git ## Strongly preferred - Payment processor integration experience (Stripe, Adyen, Shopify Payments, PayPal, Braintree, NMI) - Checkout flow experience - Shopify API - Subscription billing ## What we offer - Comp: $70K–$110K base + rev share + stock equity options - 1099 contractor - NYC + Remote - USA/Canada only ## About the company We care about what you've built, not how many years it took you. ## Apply - Apply: [email protected] — resume + anything you've built