Before retiring in 2022, I was the Chief Cook and Bottle Washer in the CTO&A organization at Cisco Systems, based in Amsterdam.
I'm professor emiritus from in the Faculty of Electronics, Mathematics and Computer Science at the University of Twente, where I led the Operating Systems and Distributed Systems group.
Before joining Cisco, I worked in the Unix Room at Bell Labs Murray Hill for ten years. Here, we worked on operating systems (Plan 9 from Bell Labs, Inferno) and Base Station Routers. We built a prototype Femto BSR, a tiny UMTS base station suitable for the home and we worked on prototypes for LTE networks. After that, I led the Wireless Systems team at Bell Labs Antwerp.