Alexandra Hahnel-Borgeaud

Head of Internal Justice Secretariat (IJS)

Alexandra is a French-German lawyer who was appointed Head of the newly established Internal Justice Secretariat in January 2026.

She obtained her law degree in Grenoble in 1998 and completed her PhD studies in Berlin in 2003. Following experience at the European Commission in Brussels and at a private law firm in Berlin, she joined CERN’s Legal Service in January 2004.

From 2007 to 2023, she led Procurement Legal, advising on CERN’s procurement rules and contracts, resolving contractual disputes and contributing to the development and implementation of the Organization’s legal framework.

From 2024 to 2026, she served within the HR Legal team, providing legal advice on employment and internal justice matters. Throughout this period, she also chaired CERN’s Joint Advisory Appeals Board for more than a decade.