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Consulting
Backend & systems architecture reviews, payments strategy, scaling and reliability, legacy modernization, and team process.
Senior Fullstack Engineer · Cairo
Production fintech systems. Now shipping with AI-assisted, spec-driven development.
I build secure payment systems and scalable backends in Node.js & TypeScript, and help teams do the same. Available for consulting and freelance work.
Available for work
engineered by
Mustafa Gamal
verified
Where I've shipped
Where I've shipped
Four ways to work together
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Freelance projects
API and backend development in Node.js, TypeScript & NestJS, plus payment and third-party integrations, deployed and observable.
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Build apps
Full-stack products from zero to launch, including Arabic-first / RTL web apps and PWAs built right for the MENA market.
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Fix bugs & legacy
Untangle flaky systems and monoliths: diagnose, harden, and break them into maintainable, layered services without grinding delivery to a halt.
I don't just write code. I think about the whole system.
I'm Mustafa Gamal, a Senior Fullstack Engineer with 8+ years building secure, high-performance applications. My core is payments and fintech: I was one of the first engineers behind a regulated, central-bank-approved Visa card, taking it from concept to launch — and I've built cross-border payment routing, hardened systems through coordinated security testing, and kept them observable at scale. I specialize in fintech integrations, clean backend architecture, AI-assisted development, and Arabic-first products.
The path here
- 2018
Web & e-commerce developer, learning the whole machine.
- 2020
Backend across e-learning, fleet tracking, and enterprise digitization.
- 2022
Found the thread: payments & fintech — e-invoicing, ERP integrations, senior backend in KSA.
- 2024
Payments at scale: cross-border routing, security hardening, and a regulated Visa card launch.
- 2026
Promoted to Senior Fullstack Engineer; leaning into agentic dev.
Expertise
- Core
- Node.js · TypeScript · NestJS · PHP/Laravel
- Payments
- Gateways · routing · regulated cards · multi-region
- Architecture
- Clean architecture · SOLID · microservices · REST
- Data & infra
- MySQL · Docker · AWS · Nginx · Datadog
- AI-assisted
- Claude Code · spec-driven development