· Advisor, Zen Data Privacy, Zen Data Privacy, Inc.2021–2021
· LP YC Demo Day Fund, Y Combinator2019–2021
· Strategic Advisor, RIDGE-LANE Limited Partners2018–2021
· CTO, SWIM.AI2018–2022
· Member Board Of Directors, Cambridge in America2015–2021
· Equity Partner, Data Collective2014–
· Founder CTO, Bromium2011–2017
· CTO, Data Center Cloud, Citrix Systems, Citrix Systems2007–2011
· Founder CTO, XenSource2005–2007
· Principal Engineer, Intel2003–2004
· Founder, CEO, Chairman, CPlane1998–2002
· Fellow, Fitzwilliam College, University of Cambridge1995–1999
· Lecturer, Computer Laboratory, University of Cambridge1995–2000
· PhD, Computer Science, University of Cambridge1990–1994
· M.Sc, Computer Science, Stellenbosch University1988–1990
· B.Sc.(Hons), Mathematics & Computer Science, University of Cape Town1984–1988