Senior Backend Engineer - Payments

Location: Remote (U.S. overlap preferred) Type: Contract (Full-Time Preferred) Domain: Payments / Fintech / eCommerce Infrastructure About the Project We are leading a modernization initiative for a high-growth digital commerce platform focused on payment orchestration, gateway optimization, and API-driven architecture . Experience with orchestration platforms such as Gr4vy, Stripe, etc. is highly desirable, but not required. Deep payments experience is mandatory. About the Role We are seeking a senior backend engineer to support a payment modernization initiative. You will work directly under the CTO to build and integrate payment orchestration systems and direct PSP connections. Responsibilities • Build and maintain API integrations with multiple PSPs • Implement payment routing logic • Develop webhook handlers • Implement tokenization flows • Support subscription billing logic • Ensure resilience, observability, and clean error handling Requirements • 6+ years backend experience • Strong in one or more: • Node.js • Java • Python • Go • Extensive REST API integration experience • Webhook processing experience • Payments domain experience required • Strong understanding of: • Auth/Capture flows • Refund logic • Chargeback lifecycle • Subscription billing Benefits • High-Impact Architecture Project • Executive Visibility • Competitive Contract Compensation • Flexible Remote Structure • Clear Scope, Clear Timeline • Long-Term Engagement • Technical Ownership Originally posted on Himalayas