Job Title: Senior Backend Engineer - Payments

Company Name: Maxana

Job Details: 5,Locations,Remote,Senior,level

Job Url: https://builtin.com/job/senior-backend-engineer-payments/8607580

Job Description: Location: Remote (U.S. overlap preferred)
Type: Contract (Full-Time Preferred)
Domain: Payments / Fintech / eCommerce Infrastructure
About the ProjectWe 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 RoleWe 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

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