Your Mission:

You will own the backend systems that move money and goods across the platform. Concretely:

• Design and implement a unified Payment Abstraction Layer supporting Stripe, Ethereum (ERC-20 token), native wallet, and extensible custom payment method adapters
• Build and maintain the Escrow Engine — funds locking, conditional release triggers (delivery confirmation, dispute resolution), auto-release timers, and high-value order fraud holds
• Integrate 3PL Aggregator APIs (EasyShip / Shippo / ShipRocket-style) for multi-carrier rate queries, label generation, tracking webhooks, and reconciliation flows
• Implement carrier-event webhook processors that drive escrow state transitions (shipped → in-transit → delivered → released)
• Architect the internal Digital Currency (token) system — issuance, redemption, buyer/seller wallet operations, and conversion rate logic
• Build customs, HS-code, and VAT calculation middleware for cross-border order flows
• Design rate-limit-resilient, idempotent payment processing pipelines that survive gateway timeouts and network partitions
• Maintain audit trails and financial reconciliation exports for regulatory compliance across MENA

Core Tech Stack You Will Interact With:

• Laravel 11
• Node.js
• Redis
• Elasticsearch
• AWS
• PostgreSQL
• Stripe API
• Ethereum / ERC-20
• Web3.js / Ethers.js
• 3PL APIs
• Docker
• GitHub Actions