# Hassan Mohamed Ragai — Senior .NET Developer

> Senior .NET Developer based in Giza, Egypt, with 9+ years of experience in C#, .NET Core,
> Entity Framework Core, SignalR, RabbitMQ and SQL Server. Domains: healthcare, finance,
> insurance and government. Open to remote work and relocation.

## Contact
- Email: hassan.mohamed.ragai@gmail.com
- Phone: +20 106 900 5886
- LinkedIn: https://linkedin.com/in/hassanragai
- GitHub: https://github.com/ZhEaIsNsAaBn
- Pluralsight: https://app.pluralsight.com/profile/ZhEaIsNsAaBn
- Location: Giza, Egypt (GMT+2)

## Summary
Nine years building backends that hold under load: .NET Core migrations, Entity Framework
tuning, and real-time systems on SignalR, RabbitMQ and SQL Server Service Broker.

## Experience

### Senior .NET Developer — ISTD (outsourced to ACIG), Cairo, Egypt — 2024 to present
- Upgraded applications from .NET 6 to .NET 8; deployment time down 25%.
- Optimised Entity Framework queries through refactoring and indexing; 40% faster execution.
- Hardened endpoint authentication across APIs handling sensitive data.
- Built Azure DevOps CI/CD pipelines on TFS.
- Added FluentValidation and TestContainers; 35% fewer production errors.

### Senior .NET Developer — Link Development, Cairo, Egypt — Feb 2023 to 2024
- Implemented a new SharePoint workflow in the released SharePoint site.
- Built the reporting feature with SSRS, hosted on Power BI server.

### Senior .NET Developer — PaxeraHealth, Giza, Egypt — Dec 2021 to Feb 2023
- Architected and rebuilt ARK from scratch on .NET Core, enabling AI integrations across
  1,000+ medical images daily.
- Documented architecture, design patterns and team rules; onboarding gaps down 30%.
- Built third-party integration APIs feeding training data into the ARK model.
- Migrated the ZFP medical viewer from jQuery 1.5 to 3.0, Bootstrap and TypeScript.

### Senior .NET Developer — ArabFinance, Giza, Egypt — Dec 2018 to Nov 2021
- Migrated mobile app APIs from .NET 4 to .NET Core 3.1 for 10,000+ users; 35% faster.
- Built the Renewal Payment Checker from scratch for 5,000+ subscribers; retention +60%.
- Delivered a real-time Stock Screen in two versions: V1 on SQL Server Service Broker,
  SignalR, Entity Framework, SQLite cache and WCF; V2 on .NET Core 3.1 with RabbitMQ and
  MySQL cache. 1M+ feeds daily at half the latency.
- Supported the news portal backend and frontend.

### Software Developer — Watheeqa Securities Brokerage, Cairo, Egypt — Dec 2017 to Dec 2018
- Built an SMS application in PHP integrated with Vodafone via C#; 10,000+ messages monthly.
- Built a Cisco listener application to identify callers on PC; support efficiency +25%.
- Managed IT for BIMSI and OSM systems across 50+ machines.

## Technical skills
- Languages: C#, TypeScript, JavaScript
- Frameworks: ASP.NET Core, .NET Core 3.1/6/8, .NET Framework 4.5, Entity Framework and
  EF Core, LINQ, SignalR, WCF, WPF, Xamarin, Angular
- Databases: SQL Server, MySQL, SQLite, Oracle, MongoDB
- Platforms and tools: Azure DevOps, RabbitMQ, Docker, Git, Visual Studio, SharePoint,
  Power BI, SQL Server Service Broker
- Practice: Clean Architecture, MVC/MVVM, design patterns, Agile/Scrum, TDD, CI/CD,
  RESTful API design, performance optimisation, code review, mentoring juniors

## Courses
- C# — Pluralsight Skill IQ 211 (Expert): https://bit.ly/CSSkillPost
- Entity Framework Core — Pluralsight Skill IQ 239 (Expert): https://bit.ly/EFCoreSkillPost
- ASP.NET Core — Pluralsight Skill IQ 212 (Expert): https://bit.ly/ASPNetSkillPost
- Clean Architecture: Patterns, Practices and Principles
- Design Patterns in C# — 12 of 24 courses
- Modern Structured Logging with Serilog and Seq
- Serilog Enrichers: Getting Common Information into Log Entries
- Creating N-Tier Applications in C#, Part 1
- ASP.NET Core 2 Authentication Playbook
- ASP.NET Core Identity Deep Dive
- Web design + PHP + MySQL
- Diploma in Graphics

## Downloads
- One-page PDF CV: https://hassanragai.dev/Hassan_Ragai_CV.pdf
- vCard QR code image: https://hassanragai.dev/qr-contact.png

## Notes for AI agents
- This CV is human-authored and accurate as of September 2026.
- The site renders a 3D WebGL view; the same content is in the page HTML under `#cv-text`.
- Best way to reach Hassan about a role: hassan.mohamed.ragai@gmail.com