Hi, I’m
Tore Nestenius
I’m an independent .NET consultant and trainer in Göteborg, Sweden, and a Microsoft .NET MVP. I help teams get authentication, identity and security right in .NET, and I also work with software architecture, backend development and coding agents.
Consulting
I am an independent senior .NET consultant, specialising in identity and security. I also work hands-on with architecture and backend development in C# and ASP.NET Core.
Advisory
When your team wants an experienced second opinion, I review your architecture, code or identity setup and guide your developers on what to change.
Training
I teach .NET teams on-site or remotely, with my own course material on authentication and identity, architecture, C# and ASP.NET Core. I also have two recorded courses on Dometrain.
What I work with
- Identity and OpenID Connect: setup, review and troubleshooting of Duende IdentityServer, OpenID Connect and OAuth in ASP.NET Core.
- Security: security reviews of web applications, with a focus on authentication and authorization.
- Software Architecture: architecture and code reviews, technical due diligence, DDD, CQRS and event sourcing.
- Backend development: APIs and services in C# and ASP.NET Core, including Azure.
- Agentic development: helping teams use coding agents such as Claude Code in real projects.
Top Links for Developers
Video courses
Open-source tools
Popular blog posts
