AHMED

Lead Full-Stack & Cloud Engineer

Zam Zam Electronics • Freelance

Sep 2025 - Present • 1 yr

Built and deployed a high-traffic e-commerce store on AWS using a decoupled architecture (EC2 8GB instance, PostgreSQL, S3 bucket), engineered to fit the client's budget. Implemented Redis and BullMQ to speed up async request processing. Performed security testing aligned with OWASP standards (SAT) prior to production deployment. Built and deployed a mobile app sharing the same backend as the web storefront — released on Google Play Store and the Apple App Store. Architected a Point of Sale (POS) system to connect to the same shared backend (architecture complete; implementation not yet started).

Senior Full Stack Developer & Headless Commerce Specialist

Maximum Vapor • Freelance

Jun 2026 - Sep 2026 • 3 mos

miatysonvapedeals.com/us: Migrated the store from Shopify to Medusa (open-source commerce engine) — extracted and synced 600 products from Shopify, including images, prices, weights, and all product parameters. Tested Medusa locally and deployed to Medusa Cloud; configured Resend for transactional e-commerce email templates. Set up uptime monitoring and integrated Sentry for ongoing error reporting; integrated Klaviyo for marketing automation. Built a custom Bulk Editor module for Medusa, which had no native bulk-editing option. Customized the storefront frontend to match brand requirements. vapecloseouts.com: Synced 6,000 product variants across 2,000 products from Shopify and deployed the store on DigitalOcean, with a migration plan built around preserving existing SEO. Set up Docker on DigitalOcean using Coolify to run frontend and backend cloud infrastructure; configured staging/dev environments and deployed the backend. Worked alongside a senior engineer on both projects to implement AgeChecker (age verification), ShipStation, and Authorize.net integrations plus compliance strategy; trained and onboarded subscribers to automate age-verification and payment-gateway workflows. Team Lead: ran a free, word-of-mouth LinkedIn hiring campaign that generated 1,000+ applicant resumes and hired 6 junior developers for the company within a short timeline. Led a team of 3 junior developers, delivering 3 custom Medusa modules: a blog builder, a page-builder module, and a domain management system.

Serverless Systems Architect / Lead Developer

Tmail.pk • Freelance

Jan 2026 - Apr 2026 • 3 mos

Designed and built a high-performance disposable email platform using Cloudflare Workers and Vercel and Supabase Scaled independently to 1,000+ daily users through serverless architecture optimised for low-latency global performance. Platform acquired by Quamify (Lahore) in 2026 — built, grown, and delivered a complete product endto-end