Stephane Constant (pictured) has taken up the newly created, full-time post of CTO to lead the Xodus Group’s integration of surface and subsurface services. Constant worked as a reservoir engineer for Elf and Agip in the UK and Premier Oil in Singapore before becoming technical director and co-founder of Horizon Energy Partners, sold to SGS in 2008. He joined Xodus last year as a non-executive director.