Most of my career as a tech professional has been as a sysadmin doing desktop support, managing web servers and integrating applications in a global corporate environment. For around a decade in the middle of all that I served as a lead engineer of directory and access services for the same company.
As more software solutions have moved off-premisis to the cloud, I've been spending a lot of time working with the new technologies that are being made possible by application containers, software defined networking and serverless architectures.
Some web sites I have built.
I have authored a few guides that are publicly available on my Github wiki. Here are some examples.