Group Services Christian Fusser Head of IT-Services christian.fusser@kellerswissgroup.com Solveig King Quality Manager solveig.king@kellerswissgroup.com Fabienne Hersperger Manager of Accounting fabienne.hersperger@kellerswissgroup.com Ruth Messmer Accountant ruth.messmer@kellerswissgroup.com Elisabetta Vogel HR Assistant elisabetta.vogel@kellerswissgroup.com