NB This website is currently under development, as at March 1, 2026. I am looking for a full remote contract.

Senior Full‑Stack C# Developer for Modernisation, Diagnostics & Delivery

I build robust, modern software systems and solve the problems that slow teams down. With forty years of hands‑on engineering experience across C#, WinUI, Blazor, SQL Server, and Azure, I help organisations modernise legacy platforms, stabilise critical systems, and deliver clean, maintainable solutions that last.

What I Can Offer You

• Design and build full‑stack solutions across desktop, web, services, and cloud
• Modernise legacy systems into clean .NET and Azure architectures
• Diagnose and fix complex issues in performance, architecture, and reliability

What I Can Offer You

Experience That Delivers! For the past twenty years I’ve been the sole developer and technical lead at a commercial software company, responsible for desktop applications, internal tools, REST APIs, Windows services, and full Azure migrations. I’ve rebuilt ageing systems into modern .NET Core platforms, redesigned data models, and delivered cloud‑native solutions that reduce cost and increase reliability.

How I Work

My approach is grounded in test‑driven development, clean architecture, and pragmatic engineering. I’m a natural diagnostician with decades of remote support experience and a long track record of delivering stable, high‑quality systems under pressure.

Available for Full‑Time Contract Work

I’m now open for new contract roles where I can bring senior engineering leadership, architectural clarity, and reliable delivery to teams that need to move quickly and confidently.

"The work was exceptional...I would certainly recommend Jon Perkins."

Mark Bradey - Economatics Education

Having worked with Jon from 1998 to 2001, I have seen first hand how eager he is to produce highly developed software within given timescales. Not only does Jon always maintain a highly professional manner, but combines this with a warm and friendly approach.

Andy Baugh, Project Manager, Nationwide Building Society (2001)

"Jon is a top notch IT consultant who I have used over many years. He is a Microsoft expert who I can't recommend highly enough."

Mark Sewell - Chair and Founder at Curo Services

The products developed by Jon are of an exceptionally high standard and have been accompanied by comprehensive documentation and an excellent test strategy

Malcolm Treaner - Claritas Ltd