Jonathan Merlevede

Welcome! I'm Jonathan, a consultant, cloud-, data- and platform engineer in Belgium. Welwitschia is the name of a plant and my company. On this site I write about things that I learned or think are interesting, mostly related to my work.

Latest posts

Using AWS IAM with STS as an identity provider

3 Dec 2025 · A look at how EKS tokens are created and how we can use the same technique to use AWS IAM as an identity provider.
Exchanging Certificates for Tokens

24 Oct 2025 · A close look at the OAuth client credentials grant with JWT token assertions
Overcoming Corporate Distrust

5 Oct 2025 · How to trust your organization's self-signed certificates and deal with applications like ZScaler man-in-the-middling your traffic