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$
USD
I will maintain and optimize your legacy backend system
Abdul Wajid Ali
About this gig
Hi, I'm a professional ASP.NET Core backend developer with 4+ years of experience in debugging, maintaining, and optimizing production-grade backend systems. I specialize in fixing bugs, improving performance, and stabilizing legacy or modern .NET applications. Whether you're facing API errors, database issues, performance bottlenecks, or unexpected production failures, I provide reliable and efficient solutions to get your backend running smoothly.
What You Get:
- Backend debugging and bug fixing
- API error investigation and resolution
- Database issue fixing
- Performance optimization and stability improvements
- Clear explanation of issues and applied fixes
- Clean, maintainable code updates
- Fast delivery and professional communication
Why Choose Me?
- Proven Backend Expertise: Hands-on experience with scalable APIs and microservices
- Modern .NET Stack: .NET 6/7/8, REST APIs, SQL, Redis
- Production-Focused Approach: Stability, security, and long-term maintainability
- Reliable Support: Clear communication and structured fixes
Please message me before placing an order to review your requirements and define the most effective technical solution for your system.
Thanks,
Wajid Ali
Get to know Abdul Wajid Ali
Abdul Wajid Ali
Software Engineer
- FromPakistan
- Member sinceJun 2023
Languages
Urdu, English, Hindi
Backend .NET Engineer with 4+ years of experience designing and scaling cloud-ready backend systems using .NET 6+, ASP.NET Core, EF Core, and Docker. Owned the architecture and evolution of high-traffic platforms serving 200k+ users, with a strong emphasis on scalability, security, and long-term maintainability. Applied DDD, CQRS, and Vertical Slice Architecture to establish clear service boundaries, enable independent feature delivery, and support secure multi-tenant environments.
Other Software Development Services I Offer
FAQ
What types of backend issues can you fix?
I fix API errors, authentication issues, database problems, performance bottlenecks, deployment errors, and unexpected production failures in ASP.NET Core applications.
Do you work with legacy .NET applications?
Yes. I maintain and troubleshoot both modern .NET (6/7/8) and legacy ASP.NET Core backend systems.
How do you identify the root cause of issues?
I analyze logs, stack traces, recent code changes, and system behavior to perform structured root-cause investigation before applying fixes.
Will you provide documentation of what was fixed?
Yes. I clearly explain the issue, the root cause, and the solution applied.
