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

Requirements

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

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