Core Requirements (All Roles)

• Production experience with TypeScript across the stack: React / React Native on the front end, Node.js (NestJS, Express, or similar) on the back end.

• Strong SQL and PostgreSQL: schema design, migrations, queries, transactions, and constraints

• Reliable third-party REST API and webhook integration (retries, signatures, idempotency).

• Automated testing and CI/CD experience.

• Cloud deployment experience (AWS preferred).

• Fluent written English; comfortable working remote and async.

• 4+ hours daily overlap with UTC+3.

Requirements by Seniority:

• Tech Lead: 6+ years production experience, including 2+ years as team lead or most senior developer; has personally set up cloud infrastructure and CI/CD; has integrated financial or compliance APIs (payments, KYC/KYB, billing) in production.

• Senior: 4+ years production full-stack experience; has integrated a payment provider in production (Stripe, Adyen, Checkout, or similar), including webhooks, idempotency, and reconciliation

. • Mid-level (2 positions): 2–4 years production full-stack experience shipping features end to end.