Company: Middle East Ecommerce
Location: Remote 
Employment Type: Full-Time Permanent
Department: Backend / Financial Systems & Logistics

About the Role

You will engineer the financial and logistics backbone of one of the most ambitious Super App platforms in the MENA region. This is a core infrastructure role — not maintenance — where you will build systems that handle payments, escrow, logistics, and internal digital currency from day one.

Key Responsibilities

• Design and implement a unified Payment Abstraction Layer supporting Stripe, Ethereum (ERC-20), native wallets, and custom payment adapters.
• Build and maintain the Escrow Engine with funds locking, conditional release triggers (delivery confirmation, dispute resolution), auto-release timers, and fraud prevention for high-value orders.
• Integrate 3PL Aggregator APIs (like EasyShip, Shippo, ShipRocket) 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 system for issuance, redemption, 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 compliance across UAE, KSA, and Egypt.

Core Tech Stack

• Backend: Laravel 11, Node.js
• Data & Caching: PostgreSQL, Redis, Elasticsearch
• Cloud / DevOps: AWS (SQS, Lambda, RDS, S3, CloudWatch), Docker, GitHub Actions
• Payments / Crypto: Stripe API, Ethereum/ERC-20, Web3.js / Ethers.js
• Logistics: 3PL Aggregator APIs integration

Required Qualifications

• 5+ years of backend engineering experience with Laravel (PHP 8.2+) and Node.js in production.
• Proven implementation of multi-provider payment systems (Stripe, crypto, custom gateways).
• Ethereum/ERC-20 token integration experience — wallet management, transaction signing, gas estimation, event listening.
• REST API and webhook design with idempotency keys, retry logic, and distributed transaction handling.
• Redis for queue management, rate limiting, and cache-aside patterns at scale.
• AWS production experience: SQS, Lambda, RDS, S3, CloudWatch.
• SQL schema design for financial data with audit log integrity.
• Elasticsearch query design for product catalog, transaction history, and analytics.

Preferred Qualifications

• Direct experience integrating 3PL aggregator APIs (Shippo, EasyShip, ShipRocket, or equivalent).
• Smart contract interaction using ethers.js (reading state, calling payable functions, listening to events).
• Experience building escrow or trust-and-safety payment systems (marketplace, gig economy, or financial platforms).
• Knowledge of MENA regional payment systems: STC Pay, Fawry, SADAD, OPay, Tabby, Tamara.
• Familiarity with PCI-DSS scope reduction architecture.
• Arabic language proficiency (beneficial but not required).

Why This Role is Exceptional

You will architect the financial and logistics rails that every transaction flows through on the platform — including escrow, digital currency, crypto payments, and real-time carrier data — forming a structural moat for the Super App.

Compensation & Benefits

• Competitive senior-level salary (disclosed at first screening).
• Permanent employment contract — full stability, not freelance or project-based.
• Opportunity to shape the core infrastructure of a MENA Super App.