Throughout my professional career I had a chance to work on all sorts of NDA-protected Java projects - ranging from 20+ year old legacy monolytic Java EE systems, and all the way until the modern microservices built with the latest Spring Boot versions available.
A job is a job, and I approach each of the projects with equal degree of curiosity and professionalism.
However, having spent so many years working on the "industry standart" technological stack, I have no interest in doing that in my free time too. That is why you will find no "Hibernate + Spring Boot + Bootstrap" services here in this list.
Java
Spring
Spring Boot
Docker
Kafka
Kubernetes
OpenShift
Oracle DB