Principal Software Engineer
.NET & Cloud Architect
Six years of rapid progression building and modernizing high-volume platforms across the .NET ecosystem, Azure and mobile.
I bridge business strategy and engineering execution — from an e-signature platform handling 1M+ signature orders to secure ed-tech and MedTech apps.
A principal engineer and technical lead who modernizes enterprise systems, leads SaaS products end-to-end, sets AI-assisted engineering standards, and ships ed-tech, MedTech & IoT apps as a freelancer.
Core Frameworks
.NET 10.NET Aspire.NET Core 8ASP.NET Web APIC#SignalRgRPC
Claude Code SkillsSubagentsAI Code ReviewDocs AutomationGit-Hook PipelinesPrompt Engineering
Luftborn2021 — PresentCairo, Egypt
Principal Software Engineer 2024 →
Enterprise modernization (.NET 10 / Azure): Architected the modernization of eSignatur — a platform handling 1M+ signature orders — migrating .NET Framework 4.8 to .NET 10 with Aspire, introducing Event-Driven Architecture and moving RavenDB to MongoDB for a significant performance improvement.
Company-wide AI enablement: Co-led how AI is used at Luftborn — authored reusable AI "skills" for our .NET and Angular stack, including AI-assisted code review, now used by developers across the company.
Docs-generation plugin + git hook: Built a plugin that generates deep, cross-linked documentation for any repo — architecture, domain models, auth, deployment and ops runbooks — grounded in code actually read, and regenerates the affected docs on every push, keeping documentation continuously in sync.
SaaS leadership & identity: Sole technical lead for an internal HR & Recruitment SaaS (Modular Monolith + DDD) spanning recruitment, time-tracking and payroll — and sole owner of its identity solution, with OAuth 2.0 / OpenID Connect SSO via Keycloak.
System integration: Engineered a custom Windows Printer Driver for the Scrive platform using Win32 APIs and Worker Services, facilitating the acquisition of 3 major enterprise customers.
Technical consulting & mentoring: Advised a Unity project toward an investor-ready demo delivered in three weeks, and mentored 5+ interns to senior-level roles.
Senior Full-Stack Engineer 2021 – 2024
Full-stack feature delivery: Built features end-to-end across ASP.NET Core Web API services and Angular / TypeScript front-ends, turning mockups and wireframes into responsive, accessible UI.
Quality & reviews: Established unit-testing and code-review practices, delivering well-tested, defect-free code to QA; ran design and code reviews and partnered with Product Management on requirements and technical architecture.
Messaging & integration: Designed message-broker / event-driven integrations on Azure Service Bus to decouple services across the platform.
Building Technology Labs2019 — 2021Cairo, Egypt
Full-Stack Developer
Designed and implemented an HR operations web application, introducing Angular to modernize the company's frontend stack.
Migrated legacy jQuery/AJAX codebases to Angular, enhancing maintainability.
Developed C# WPF desktop applications integrated with SQL, boosting internal operational efficiency by 20%.
Salah Bahzad (EdTech): Architected and built a production online tutoring platform — a multi-portal system (.NET Clean Architecture / CQRS / DDD, Firebase auth, one Flutter codebase for native apps) with encrypted-HLS secure video, OS-level screen-capture black-out, a Redis-backed real-time layer, and a tenant-ready, fully audited domain.
Ventriject (MedTech): Complete rewrite of a VO₂max measurement app from Xamarin to Flutter, with a custom BLE package for medical sensors.
Wear&Care (IoT / Elderly Care): Migrated a monitoring app from .NET MAUI to Flutter in a single week, improving stability.
Mindplus: Maintains and scales a meditation app, shipping features that improve user retention.
Ain Shams University
Bachelor's Degree in Computer Science
CAIRO, EGYPT · 2015 – 2019
Certifications
Dale Carnegie Leadership TrainingLeadership & communication · 2024
Fluent in English & ArabicWorking across EU & Middle East teams
Selected work
Eight products, from enterprise to pocket.
E-signature platforms, HR SaaS, secure ed-tech and MedTech apps —
shipped, scaled and maintained.
Visit site
01Digital Signature
eSignatur
esignatur.dk
Architected the modernization of a high-volume e-signature platform
handling 1M+ signature orders — migrating .NET Framework 4.8
to .NET 10 with Aspire, introducing Event-Driven Architecture, moving
RavenDB to MongoDB, and provisioning Azure with Pulumi for a significant performance improvement.
A production education platform for a mathematics tutor: a role-based
admin portal, a responsive student portal, and native Flutter
companion apps for protected video — all on a .NET Clean Architecture
/ CQRS / DDD backend that's multi-tenant-ready by design. The hard
part is the video: encrypted HLS (AES-128) with short-lived signed
URLs and an in-player dynamic watermark, backed by OS-level
screenshot & screen-recording black-out through the native apps'
secure-surface flags — no paid DRM. Firebase-backed identity, a Redis
real-time backplane, and an append-only, dispute-grade audit log
round out the system.
A legally-binding digital signature SaaS for teams across the EU
& Middle East — GDPR-ready and secured by leading identity
platforms (OpenID, Azure, SAML, Auth0).
Sole technical lead for an internal HR & Recruitment SaaS —
recruitment, time-tracking and payroll — architected as a Modular
Monolith with Domain-Driven Design.
.NETAngularC#DDDModular MonolithServiceBus
Visit site
05MedTech · IoT
Wear&Care
wearandcare.com
An IoT elderly-care monitoring app — migrated from .NET MAUI to
Flutter in a single week, improving stability and real-time device
status tracking.
FlutteriOSAndroid.NETAngular
Visit site
06MedTech
Ventriject
ventriject.com
Complete rewrite of a VO₂max measurement app from Xamarin to
Flutter, with a custom Bluetooth Low Energy package engineered for
medical sensors.
FlutteriOSAndroidBLE
Visit site
07Healthcare
MindPlus
mindplusapp.com
A meditation & wellbeing app — maintained and scaled with new
features focused on improving long-term user retention.
FlutteriOSAndroid
08Productivity
Nafez.
productivity matrix
A productivity-matrix task app that organizes the day by priority
quadrants — keeping focus on what truly matters, today.
FlutterAndroid
Let's get in touch
Have a system worth building?
I'm open to principal & architect roles and select freelance work. The fastest way to reach me is email — or dig into the code and writing below.