Ahmad Hasan
E-commerce Software Engineer & Systems Architect
Specializing in bridging customer-facing storefronts with mission-critical operations: Shopify 2.0, WooCommerce, Odoo ERP bi-directional sync, custom POS, and transactional backends.
Technical Competencies by Problem Domain
Shopify 2.0, Liquid Theme Architecture, Metaobjects, AJAX slide-out cart drawers, WooCommerce, WordPress Core, Next.js Commerce.
Shopify GraphQL & Admin REST API, WooCommerce REST API, Odoo ERP bi-directional sync, HMAC webhook ingestion, Redis background queues.
PHP 8.x, Laravel 11, Node.js, Next.js 15 App Router, React 19, TypeScript, MySQL, PostgreSQL, Redis caching & locking.
Universal Cloud POS, ESC/POS 80mm thermal receipt printing, barcode scanners & studio, Egyptian Tax Authority (ETA) e-Receipt API gateway.
Flagship Engineering Systems & Case Studies
VendoShift — Multi-Store Shopify Operating System & Cloud Retail POS
vendoshift.com | 2024Lead Systems Architect & Full-Stack Engineer | Shopify API, Next.js, Node.js, Redis, ESC/POS, ETA API
- Architected an enterprise multi-store operating platform bypassing Shopify Basic plan limits by offering unlimited team seats with custom RBAC.
- Engineered a high-speed Cloud POS compatible with universal ESC/POS 80mm thermal printers and generic barcode scanners without hardware lock-in.
- Implemented automated Egyptian Tax Authority (ETA) e-Receipt integration, digitally signing and issuing fiscal receipts upon transaction checkout.
- Engineered Barcode Studio (EAN-13, Code 128) and composite bundle inventory sync with real-time component SKU stock deductions.
Fabric Tales — Shopify 2.0 & Odoo ERP Integration Engine
fabrictaleseg.com | 2024Lead Integration Engineer | Shopify Liquid, Odoo ERP, Shopify GraphQL, Redis Queues, Webhooks
- Engineered bi-directional event-driven synchronization between Shopify and Odoo ERP for multi-warehouse inventory and sales orders.
- Designed HMAC-verified webhook ingestion workers with idempotency keys and exponential backoff retry queues, eliminating overselling.
- Achieved sub-30s sync latency from checkout to Odoo order creation, saving 20+ hours of weekly manual back-office overhead.
EngazPro — Multi-Branch Commerce ERP & WooCommerce Sync SaaS
engazpro.com | 2024Proprietary SaaS Architect | Laravel 11, React, MySQL, Redis, WooCommerce REST API
- Engineered a multi-tenant commerce SaaS unifying multi-branch physical stores with WooCommerce online stores into one unified cockpit.
- Delivered sub-150ms retail POS checkouts, real-time cash drawer tracking, and automated profit/loss calculation ledgers.
Professional Experience
Lead E-commerce Software Engineer & Systems Architect
2023 - PresentEngazPro & Commercial Commerce Consultancies (Remote / Contract)
- Architecting end-to-end commerce systems connecting Shopify and WooCommerce storefronts with ERP backends, POS, and inventory databases.
- Designing resilient background queues, asynchronous webhook handlers, and transactional database locks for zero overselling.
Senior E-commerce & Full-Stack Developer
2021 - 2022Commercial Retail & Apparel Enterprises (Cairo / Remote)
- Engineered bespoke Shopify Online Store 2.0 themes and custom WooCommerce platforms with 95+ mobile PageSpeed scores.
- Eliminated recurring third-party app subscription fees by building native Liquid sections and custom PHP/Laravel APIs.
E-commerce Solutions Developer
2019 - 2021Web Systems & Software Studio (Cairo, Egypt)
- Built custom WordPress/WooCommerce websites, courier logistics integrations, and database query caching.