Frequently Asked Questions

I spend a fixed part of the week on my own SaaS platforms (Invullen.nl and Factuur-Assist.nl). Time and planning are agreed per engagement.

Get in touch for my current availability. A workshop or shorter assignment can often be scheduled on shorter notice.

Both. I'm based in the Utrecht region (Netherlands) and available for on-site and remote work.

For on-site work I calculate a maximum travel time of 1 hour (including average traffic delays).

Get in touch for a rate that fits the project. I work on an hourly rate or fixed price per project, depending on scope.

My primary stack:

• AI: Claude Code, Codex, Semantic Kernel, OpenAI, Azure AI Foundry
• Identity: OAuth2, OpenID Connect, Azure Entra ID, SCIM, IdentityServer4 (migrations), OpenIddict
• .NET & Cloud: .NET 10, C#, Azure, Docker, Kubernetes (AKS), SQL Server
• Frontend: Vue 2/3, Angular, TypeScript
• DevOps: Azure DevOps, CI/CD, Playwright

View my CV for the full tech stack overview.

Yes. In addition to agentic coding, I help SaaS teams with enterprise SSO and provisioning: OAuth2, OpenID Connect, SCIM and Azure Entra ID. I've built multiple secure token services and am SC-300 certified.

More on the SSO page.

We start with an introduction. We explore your question and whether I'm the right person for it.

After that I make a scoped proposal, for example for a workshop or technical pilot, with scope, preconditions and deliverables. After delivery we evaluate and decide whether a follow-up makes sense. My contribution is technical and subject-matter; the client takes care of priorities, available participants and organisational decisions.

I work on the basis of a contract for services, for example the Model ICT Agreement (Dutch standard).

Yes. I have professional liability insurance from Hiscox in the name of Software Assist BV.

I work as an independent business owner through my own company, Software Assist BV. How the Dutch tax authority assesses a working relationship depends on the actual situation. What I can do is be clear about how I work:

• Own business. Software Assist BV with Chamber of Commerce registration, VAT number and professional liability insurance. Alongside assignments I develop my own SaaS products, including Factuur-Assist.nl with 135+ paying customers.
• Scoped assignment. Up front we agree on goal, scope, deliverables and end, for example for a workshop, a technical pilot or an SSO implementation.
• Own way of working. We align on goals, planning and quality; I decide how I do the work, with my own methods and tools.
• Time per engagement. Size and duration are agreed per engagement.

We work on the basis of a contract for services, for example the Model ICT Agreement; your own agreement is sometimes possible, in consultation. What matters is that the arrangements match practice. This is not legal or tax advice: when in doubt, have the setup reviewed by your own tax adviser or lawyer.