Thierry Lagrange graduated in economics and financial management in Belgium, and joined CERN in 1985 as a contract officer within the Procurement Service. He was appointed Head of Procurement in 1993, when the major procurement contracts for the LHC machine and experiments were put in place. He subsequently became leader of the Procurement and Logistics Division in 2002 before being appointed Deputy Head of the Finance Department in 2004, whose main responsibility was the management of the procurement and industrial services. He was Head of the Finance and Procurement Department from 2009 to 2015. He is now Head of Industry, Procurement & Knowledge Transfer Department. In addition, he has been appointed Management Liaison for Belgium.