---
title: "Hi, I’m Tore Nestenius"
description: "I’m Tore Nestenius, a Microsoft .NET MVP, consultant and trainer in Göteborg, Sweden. I help teams get authentication, identity and security right in .NET."
url: https://tn-data.se/
type: hub
lang: en
alternate: https://tn-data.se/sv/index.md
site: https://tn-data.se/
---

# Hi, I’m Tore Nestenius

![Tore Nestenius](https://tn-data.se/_astro/Tore.Cd4TZXMw_Z1Fp97z.webp)

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.

[Services](https://tn-data.se/consulting/)

[Training](https://tn-data.se/training/)

[![Microsoft MVP profile of Tore Nestenius](https://tn-data.se/_astro/MVP_Digital_RGB_31_badge_full_color_blue.BZMWQT9U_MqG6S.webp)](https://mvp.microsoft.com/en-US/mvp/profile/5150f7cb-54d8-48d8-a450-46b2b677d634)

## 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.

[View Consulting](https://tn-data.se/consulting/)

## 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.

[View Advisory](https://tn-data.se/consulting/#how-i-work)

## 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.

[View Training](https://tn-data.se/training/)

## What I work with

- [**Identity and OpenID Connect**](https://tn-data.se/consulting/#identity): setup, review and troubleshooting of Duende IdentityServer, OpenID Connect and OAuth in ASP.NET Core.
- [**Security**](https://tn-data.se/consulting/#security): security reviews of web applications, with a focus on authentication and authorization.
- [**Software Architecture**](https://tn-data.se/consulting/#architecture): architecture and code reviews, technical due diligence, DDD, CQRS and event sourcing.
- [**Backend development**](https://tn-data.se/consulting/#backend-development): APIs and services in C# and ASP.NET Core, including Azure.
- [**Agentic development**](https://tn-data.se/consulting/#agentic-development): helping teams use coding agents such as Claude Code in real projects.

## Top Links for Developers

**Video courses**

- [Getting Started: Authentication and Authorization in .NET](https://tn-data.se/courses/getting-started-authentication-and-authorization-in-dotnet/)
- [Getting Started: OpenID Connect](https://tn-data.se/courses/getting-started-openid-connect/)

**Open-source tools**

- [Coding Agent Explorer](https://nestenius.se/ai/introducing-the-coding-agent-explorer-net/)
- [Cloud Debugger for Azure](https://nestenius.se/azure/introducing-the-cloud-debugger-for-azure/)

**Popular blog posts**

- [OpenID Connect for Developers Guide](https://tn-data.se/openid-connect/)
- [Duende IdentityServer 7: A Complete Setup Guide for ASP.NET Core](https://nestenius.se/net/duende-identityserver-7-a-complete-setup-guide-for-asp-net-core/)
- [Implementing the BFF Pattern in ASP.NET Core for SPAs](https://nestenius.se/net/implementing-bff-pattern-in-asp-net-core-for-spas/)
- [IdentityServer in Docker Containers Series](https://nestenius.se/net/identityserver-in-docker-containers-part-1/)
- [Demystifying OpenID Connect’s State and Nonce Parameters in ASP.NET Core](https://nestenius.se/net/demystifying-openid-connects-state-and-nonce-parameters-in-asp-net-core/)

![Tore Nestenius presenting at the Øredev conference in Malmö, November 2024.](https://tn-data.se/_astro/PXL_20241108_130118131.MP_-768x577.BiqOeOEN_Z4ukOx.webp)

## Latest company news

- [My Two Dometrain Courses: Authentication in .NET and OpenID Connect](https://tn-data.se/my-dometrain-courses-authentication-and-openid-connect/)
- [Speaking at NDC Copenhagen 2025](https://tn-data.se/tn-data-at-ndc-copenhagen-2025/)
- [Nominated for Trainer of the Year 2025](https://tn-data.se/nominated-for-trainer-of-the-year-2025/)

[All news](https://tn-data.se/blog/)

## Latest blog posts

- [What's new in ASP.NET Core authentication in .NET 11](https://nestenius.se/net/whats-new-in-asp-net-core-authentication-in-net-11/)
- [Visualizing Claude Code MCP Requests with Coding Agent Explorer](https://nestenius.se/ai/visualizing-claude-code-mcp-requests-with-coding-agent-explorer/)
- [Exploring Claude Code Hooks with the Coding Agent Explorer (.NET)](https://nestenius.se/ai/exploring-claude-code-hooks-with-the-coding-agent-explorer-net/)

[All blog posts](https://nestenius.se/)