Lead Engineer / Payment Architect at Maxana | Torre

Lead Engineer / Payment Architect

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Freelance
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Remote (for United States residents)
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Emma of Torre.ai
6 days ago

Responsibilities


Location: Remote (U.S. overlap preferred)Type: Contract (Full-Time Preferred)Domain: Payments / Fintech / eCommerce InfrastructureAbout the ProjectWe 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 orchestrationTokenization strategyDirect PSP integrationsSubscription billing logicCheckout modernization without disruptionExperience with orchestration platforms such as Gr4vy, Stripe, etc. is highly desirable, but not required. Deep payments architecture experience is mandatory.What You’ll DoArchitect and lead end-to-end payment orchestration strategyDesign multi-PSP routing logic and failover systemsLead integration from gateway abstraction to direct acquirer connectionsOversee token migration and vault strategyEnsure PCI-compliant design and security best practicesGuide backend and DevOps engineers through executionWhat Success Looks LikeClean abstraction layer across PSPsReduced payment frictionImproved authorization ratesModernized checkout infrastructureRequirements8+ years backend engineering experience4+ years in payments infrastructureStrong knowledge of:REST APIsWebhooksTokenizationRecurring billing logicCard-not-present flowsExperience integrating PSPs (e.g., Worldpay, Checkout.com, Adyen, Stripe, etc.)Experience designing high-availability systemsIdeal (Not Required)Gr4vy integration exposureSubscription/SaaS billing systemsGateway-to-direct processor migration projectsBenefitsHigh-Impact Architecture ProjectExecutive VisibilityCompetitive Contract CompensationFlexible Remote StructureClear Scope, Clear TimelineLong-Term EngagementTechnical Ownership