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$
USD
I will modernize and refactor your legacy web app into a scalable dotnet system
Eric Wang
About this gig
Is your legacy web app slow, fragile, or expensive to maintain? I help businesses modernize and refactor aging codebases into clean, scalable .NET 8 systems without breaking what already works.
With 25+ years of full-stack engineering experience, I have rescued and rebuilt real production systems used by SMEs every day.
WHAT I CAN DO FOR YOU
Audit your legacy codebase and identify the biggest risks and quick wins. Refactor tangled modules into clean, testable, maintainable code. Migrate old frameworks to modern .NET 8, ASP.NET Core and Blazor. Improve performance, security and database design. Add automated tests and CI/CD so future changes are safe.
MY CORE STACK
.NET 8, ASP.NET Core, Blazor, C#, FastAPI, Next.js, React, TypeScript, Node.js, plus SQL and cloud deployment.
HOW I WORK
I start with a focused audit, agree a clear roadmap with you, then refactor in safe, reviewable steps. You always know what is changing and why.
Message me first with a short description of your system so I can recommend the right package and a realistic timeline before you order.
Get to know Eric Wang
Eric Wang
AI Driven Full Stack Engineer and SaaS Automation Specialist
- FromTaiwan
- Member sinceSep 2020
Languages
English, Chinese
Senior software engineer and studio lead with 25 years of experience, specializing in AI-driven development automation. At HurricaneSoft, one engineer plus an AI co-pilot team shipped 14+ production products in a single year, taking SaaS from zero to live in as little as 23 days.
I automate the full delivery lifecycle and build with .NET 8, Blazor, FastAPI, Next.js, GCP Cloud Run, multi-tenant SaaS, OAuth2/OIDC, LLM gateways and payments. Need a SaaS from scratch, a legacy system modernized, or an AI platform integrated? I deliver full-team output: fast, secure and production-grade.
My Portfolio
FAQ
Will modernizing break my existing features?
No. I refactor in small, reviewable steps and add automated tests, so your existing behavior is preserved while the code becomes cleaner and faster.
Do you need access to my source code?
Yes, ideally read access to your repository. If that is not possible we can start from an audit using exported code or screenshots and plan the migration from there.
How long does a legacy modernization project take?
It depends on scope. I start with a focused audit, agree a clear roadmap, then refactor in safe, reviewable steps. Small refactors can ship in days; a full modernization is delivered in staged milestones so your app keeps working the whole time.
Can you work with my old .NET Framework or other stack?
Yes. With 25+ years of full-stack experience I have migrated many legacy systems - old .NET Framework, WebForms, classic ASP.NET and mixed stacks - to modern .NET 8, ASP.NET Core and Blazor. Share your current setup and I will recommend the safest upgrade path.
