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

• 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

• High-Impact Architecture Project
• Executive Visibility
• Competitive Contract Compensation
• Flexible Remote Structure
• Clear Scope, Clear Timeline
• Long-Term Engagement
• Technical Ownership