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I will develop and fix your asp net core rest API and dotnet backend
Syed Waqas
About this gig
Senior C# / .NET developer with 5+ years building cloud-based backend systems for enterprise clients such as Fujitsu and ASUS. Based in Germany.
WHAT I BUILD
- REST APIs with ASP.NET Core (.NET 8/9/10)
- Microservices and scalable backend architecture
- SQL Server, PostgreSQL and MySQL: schema design and query optimization
- Entity Framework Core and clean data access
- JWT authentication and role-based authorization
- Swagger / OpenAPI documentation
- Docker and CI/CD pipelines
WHAT I FIX
- Bugs and errors in existing ASP.NET Core projects
- Slow queries and performance problems
- Upgrades from .NET Framework or older .NET Core versions
HOW I WORK
Test-driven development with NUnit / xUnit, SOLID principles and clean code. You get code your team can maintain, not a black box.
WHAT YOU GET
Full source code, database scripts, API documentation and a README so your team can run it on day one.
Not sure what you need? Message me before ordering and I'll scope it for free.
Get to know Syed Waqas
Syed Waqas
Software Developer
- FromGermany
- Member sinceMay 2015
- Last delivery6 years
Languages
English
Software developer based in Germany with 10+ years in Unity and 5+ years in C#/.NET backend development. I've shipped over 100 published mobile games (arcade, racing, simulation, action, 2D and 3D) and specialise in fixing bugs, build errors, mobile ad monetisation and native Android/iOS plugins. On the web side I build ASP.NET Core REST APIs, SQL databases and clean, tested backends for enterprise clients. Fast replies, clear communication in English and German, and code you can actually maintain.
FAQ
Can you work with my existing codebase?
Yes. I regularly take over existing .NET projects — adding features, refactoring to clean architecture, fixing bugs or writing missing tests. Send me the repo and I'll tell you honestly what shape it's in.
Which .NET version do you use?
.NET 8, 9 or 10 by default. If you're on .NET Framework or an older Core version, I can work there too or plan a migration.
Do you write tests?
Always. Unit tests with NUnit or xUnit are included from the Standard package up, and integration tests in Premium. TDD is how I work day to day.
Which database do you support?
SQL Server, PostgreSQL and MySQL. I handle schema design, migrations, indexing and query optimization — not just CRUD.
Can you deploy it for me?
Yes. Docker and CI/CD are in the Premium package, and Azure deployment is available as an extra.
What about confidentiality?
Happy to sign an NDA before we start. Your code and data stay yours.
What time zone are you in?
Central European Time (Germany). I usually reply within a few hours on weekdays.
