Modernise Legacy .NET Systems — Zero Downtime
Your .NET Framework monolith is slowing every deployment. Pages take seconds. Audit trails are unreliable. I refactor it to a zero-warning .NET 10 Blazor platform — your team maintains clean code, your users get sub-second pages, and cutover happens with zero downtime. On the case-management rebuild that meant 74,200+ LOC moved without a day of downtime.
Problems this solves
What you get
Who it is for
Organisations running .NET Framework 4.x or older .NET Core versions who need a modern platform without risking their live operations. Suitable for regulated industries, financial services, case management, and internal business systems with 50–500+ staff.
How it works
I run the old and new systems in parallel during the build. Data synchronises in real-time between the legacy database and the new platform. When the new system is ready, I switch the connection string in one transaction. Users log in to the new UI with the same data, same permissions, same business logic — just faster and with full audit.
Related work
See how I refactored a regulated financial services case management system from 8-second page loads and no audit history to a sub-second platform with full transaction audit — without a single day of downtime. Outcome: page loads from seconds to milliseconds; advisor workflows from 2 days to 20 minutes; 74,200+ LOC.
View related case studiesIs your legacy .NET platform holding you back?
Book a free 30-minute call. I will look at your current stack and tell you honestly whether a zero-downtime modernisation is feasible — and what it would take.