Available for senior backend roles

Senior .NET
Backend Engineer

I design and build reliable APIs and business workflows for SaaS and booking platforms — Clean Architecture, CQRS, payment integrations, and background jobs that hold up under load.

5+
Years building APIs
20+
Systems shipped
99.9%
Uptime focus
api / orders / flow
POST /api/orders
Validate · Auth · Idempotency
BEGIN TRANSACTION
Reserve slot · Process payment
COMMIT · Enqueue job
200 OK · 42ms
ASP.NET CoreEF CorePostgreSQLCQRS

Technical Expertise

Built for reliability at scale

ASP.NET Core

High-performance web APIs and backend services.

EF Core & SQL

PostgreSQL & SQL Server, efficient data modeling.

Clean Architecture

Maintainable, testable codebases.

CQRS

Command/query separation for scale.

Payment Integrations

Secure gateways & transaction handling.

Reliable Systems

Concurrency, background jobs, fault tolerance.

Selected Work

Systems I've designed & delivered

View all projects

SaaS Booking Platform

Multi-tenant booking system with payment integration, concurrency-safe slot management, and background job processing.

Impact
10k+ bookings/day
ASP.NET CorePostgreSQLCQRSPayments

Business Workflow API

Enterprise workflow engine handling complex approval chains, notifications, and scheduled background tasks.

Impact
40+ workflow types
EF CoreSQL ServerClean Architecture

Payment Gateway Integration

Secure payment processing layer with webhooks, idempotency, and reconciliation for high-volume transactions.

Impact
99.99% success rate
ASP.NET CoreConcurrencyReliability

Contact

Let's build something reliable

Email

muhammad@example.com

Phone

+20 100 000 0000

Location

Cairo, Egypt

MMMuhammad.dev

© 2026 Muhammad Mahmoud. All rights reserved.

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