Lead Engineer / Payment Architect

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.

This role will architect and lead integration efforts involving:

• Payment gateway orchestration
• Tokenization strategy
• Direct PSP integrations
• Subscription billing logic
• Checkout modernization without disruption

Experience with orchestration platforms such as Gr4vy, Stripe, etc. is highly desirable, but not required. Deep payments architecture experience is mandatory.

What You’ll Do

• Architect and lead end-to-end payment orchestration strategy
• Design multi-PSP routing logic and failover systems
• Lead integration from gateway abstraction to direct acquirer connections
• Oversee token migration and vault strategy
• Ensure PCI-compliant design and security best practices
• Guide backend and DevOps engineers through execution

What Success Looks Like

• Clean abstraction layer across PSPs
• Reduced payment friction
• Improved authorization rates
• Modernized checkout infrastructure

• 8+ years backend engineering experience
• 4+ years in payments infrastructure
• Strong knowledge of:
• REST APIs
• Webhooks
• Tokenization
• Recurring billing logic
• Card-not-present flows
• Experience integrating PSPs (e.g., Worldpay, Checkout.com, Adyen, Stripe, etc.)
• Experience designing high-availability systems

Ideal (Not Required)

• Gr4vy integration exposure
• Subscription/SaaS billing systems
• Gateway-to-direct processor migration projects