.NET and C#
More than 20 years in the Microsoft world. From large Windows applications to modern web apps, with the databases underneath.
More than 25 years of software development, now amplified by AI. That means solid solutions, much faster.
Contact meFor 25 years I have written code for machines.
Now the machines understand our language.
I help you use it where it pays off.
Where AI pays off for you, and where it does not.
Agents, automated workflows and language models connected to your own systems and data.
Get your developers working with AI agents, with fixed workflows, review and clear rules.
MCP servers and integrations that give an AI safe access to your systems.
I have built my own system of AI agents that share one memory: a second brain with my notes, skills and lessons from years of work. I set the direction and the architecture. The agents search, write code in parallel and review each other's work by my rules, and every task makes the system a little smarter. I decide, and I stand behind everything that is delivered.
More than 20 years in the Microsoft world. From large Windows applications to modern web apps, with the databases underneath.
Hosting, web apps, databases and operations in Microsoft's cloud, set up to run stable and secure.
Large, complex systems that have to last for years. From lead architect at TDC to clients' own core applications.
Project manager at TDC and IBM. I keep goals, plan and quality on track, from the first requirement to delivery.
Registered Shopify Partner. Websites, web shops and apps for iPhone and iPad, and the integrations that tie them together.
And AI on top of it all.

My name is Casper Schjørring Lafrenz, and I have been building software for more than 25 years. What I still enjoy most is the moment something complicated becomes simple for the people who use it. Along the way I have worked for some of the largest companies in Denmark, among them Novo Nordisk, TDC, Logica and IBM.
Computer science and mathematics at the University of Copenhagen.
Developer and consultant, at TDC and Novo Nordisk among others.
Lead architect at TDC on a workflow system that grew into a group-wide system. Later project manager.
Project manager at IBM with a focus on outsourcing, to India among others.
Started CSL Consult. Since then a wide range of work: large, complex applications, web apps, websites and web shops, iPhone apps, databases, cloud hosting, outsourcing and much more.
I develop using language models and AI agents, steered by 25 years of experience: I know what to build, how it should fit together and when it is good enough. Together that gives strong results, much faster than before.