KareemMohamed
// Backend Engineer & System Architect
3+ years engineering mission-critical backends and multi-tenant SaaS architectures that run at scale. Cairo-based, globally deployed. Specializing in advanced PHP, Laravel Ecosystem, and Clean System Design.
The
Backend Architect
I'm a Backend Engineer based in Cairo — specializing in advanced PHP and the Laravel ecosystem. My core focus is building high-concurrency APIs, Multi-tenant SaaS platforms, and reliable system architectures.
I've delivered mission-critical backends for United Media Services — handling over 500k concurrent users and government-level compliance. At Cyrus Technology, I architect enterprise CRM, ERP, and RMS systems.
Beyond in-house: I've freelanced across Australia, the US, Algeria, and Saudi Arabia. I have a strong product-mindset; while my true power lies in backend architecture, I seamlessly bridge the gap with frontend and mobile layers to ship complete, scalable products.
Contributing to large-scale enterprise B2B, CRM, ERP, and RMS products deployed across Egyptian businesses. Full-stack across backend and frontend. Gained deep grounding in translating complex business requirements into precise, maintainable software architecture.
Mission-critical platforms for Egypt's largest media and governmental entity. Delivered UMA (e-learning), UMS Podcast (news portal), and the official Al-Alamein Festival Event Management System — monitoring Egypt's largest annual cultural event live. Zero tolerance for failure.
Developed "On My Way Therapy" — an NDIS-compliant therapy services platform. Responsible for backend, frontend, and full project management. Collaborated across a fully remote international team.
Full product ownership from day one. Designed the multi-tenant SaaS architecture, implemented VoIP calling, email integrations, calendar sync, automated lead routing, Stripe subscriptions, and comprehensive reporting.
Sole developer for an entire e-scooter mobility platform. Built customer apps (iOS & Android), operator dashboard, POS seller app, accounting module, and landing page. Integrated with IoT scooter hardware.
Delivered scalable web and mobile solutions for the Saudi market with emphasis on enterprise reliability, security, and localization requirements specific to MENA region operations.
Let'sBuild.
Open to freelance projects and full-time opportunities. Need a complex system built from scratch, or want to level up something existing? I've done both — let's talk.