Backend APIs & Systems
Production-grade REST APIs, authentication systems, payment integrations, and business logic — built on ASP.NET Core with Clean Architecture.
Available for new projects
Hi, I'm
Mazen Ayman
.NET Full-Stack Developer
Helping businesses turn ideas into reliable software solutions from management systems and SaaS platforms to custom web applications, APIs, and business automation tools.I design and build production-grade web applications for businesses that need reliable systems — not just code. Multi-tenant SaaS, management platforms, payment integrations, and clean APIs that scale.
6+
Systems Delivered
.NET · Angular
Core Stack
CQRS · DDD
Architecture
Arabic + English
Languages
I'm a Full-Stack .NET Developer based in Egypt, building serious software for clinics, businesses, and startups. I specialize in systems that manage real data, real users, and real workflows.
My focus areas: multi-tenant SaaS platforms with data isolation, clinic and healthcare management systems, payment gateway integrations (OPay, payment APIs), and Clean Architecture with CQRS, Domain-Driven layers, and Dapper.
I don't just write features. I design software that's maintainable — meaning the next developer (or you, in 6 months) can understand every decision I made.
Process
How I Work
Discovery
We start with a free call to understand your business, goals, constraints, and what success looks like for your project.
Architecture Proposal
I design the system architecture, data model, and tech stack — no-obligation. You see the full plan before a single line of code is written.
Development
Work happens in focused sprints with weekly updates. You have visibility into progress at every stage — no black boxes.
Delivery & Handoff
Delivered with documentation, deployment guide, and 30 days of post-launch support. You own the code completely.
Services
What I Build
Full-Stack Web Applications
End-to-end Angular + .NET applications with multi-role dashboards, responsive UI, and real-world workflows for clinics, platforms, and businesses.
SaaS & Multi-Tenant Platforms
Subdomain-based tenant isolation, Row-Level Security, CQRS with MediatR — for software that serves many clients from one codebase.
Projects
Selected Projects
In Active Development
⭐ Featured ProjectClinicFlow — Multi-Tenant Clinic SaaS
A production-grade SaaS platform for medical clinics. Each clinic runs on its own subdomain with full data isolation via Row-Level Security.
- Subdomain-based tenant isolation
- SQL Server Row-Level Security
- CQRS + MediatR + FluentValidation
- Modular Monolith architecture
- Angular Signals state management
Completed
Hospital Management System API
Production-grade .NET Web API for hospital operations: patient registration, appointment scheduling, staff role management, and access-controlled medical records.
Completed
Student Housing Platform
A two-sided rental platform: tenants browse listings and submit requests; property owners manage units, tenants, and payment status from a dashboard.
Completed
E-Commerce Storefront
Full responsive shopping experience: product listing, filtering, cart logic, and checkout flow. Optimised for mobile — loads in under 2 seconds on 3G.
Let's Build Something
Liked what you saw? I'm available for freelance projects, full-time roles, and consulting.
Stack
Tech Stack
Backend
Frontend
Database
Architecture
Tools
Contact
Let's Build Something Together
I'm available for freelance projects, full-time roles, and consulting. Response time: within 24 hours.
Schedule a Free Discovery Call