A veteran IBMer, I have worked on MVS, OS/390, z/OS. I had a 12 year stint in WebSphere as one of the creators of WAS on z/OS. I have worked on JCL, Batch, TSO, zAAPs, price engineering, z/OSMF - browser based UI and REST services for z/OS, and zCX (Linux on z/OS). I am technically responsible for the content of z/OS including SDSF, RMF, JES2, TSO, z/OSMF and a long list of Base control program components.