Still hiring ASP.NET WebForms developers in 2026? You're not alone.
Customer portals, internal admin tools, line-of-business apps built on WebForms are still live and running. Microsoft still maintains the documentation. Their own migration guidance calls moving from ASP.NET Framework to ASP.NET Core "non-trivial" for most production apps. So the hiring need is very real.
Here's what actually works when you're looking for the right developer:
Start with the app, not the resume. Run a short paid audit first, then give the candidate a real task inside your actual codebase. Legacy work rewards judgment over syntax knowledge, and you won't see judgment on a CV.
During the interview, ask real questions:
How do you debug a broken postback?
How do you trace a page that hangs on load?
How do you handle ViewState, session state, and authentication?
What do you document after a fix so the next person isn't guessing?
What a strong hire actually knows: page life cycle, data binding, IIS deployment, and production debugging. They should also be able to read old code without panicking.
Common mistakes to avoid:
Hiring a general .NET developer and assuming WebForms knowledge comes with it. It usually doesn't.
Skipping a code review before the engagement starts. That's where the real mess shows up.
For a small bug list, a short contract works fine. For a customer portal handling logins, payments, or sensitive data, you need dedicated ownership, someone who knows the system's history and can stay through the hard moments.
The One Technologies specializes in ASP.NET WebForms development with real legacy experience, whether you need the app kept stable or a clear path toward migration.