Lead Engineer / Payment Architect at Maxana in Brazil, BR

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

• High-Impact Architecture Project

• Executive Visibility

• Competitive Contract Compensation

• Flexible Remote Structure

• Clear Scope, Clear Timeline

• Long-Term Engagement

• Technical Ownership