I've been working in the computer field for over 30 years. I've worked in numerous positions, including classified telecommunications, database programming, unix and nt server administration, network management, and system and network engineering. Some certifications I have held over the years are CNP, CCNA, CISSP, MCSE, RHCE, Openstack, and puppet. I've been managing unix and linux systems for over 30 years.
Most of my work currently is with Ceph and Kubernetes. I work a lot with networking, monitoring, and management of systems. Mostly infrastructure work, storage, message bus systems (rabbitmq and to a lesser extent activemq).