Our team
Finance & Human Resources
We take care of the financial administration and support our employees in all matters related to personnel.
ZurichStefania WengerHead of Finance
ZurichEsther PollhammerFinance & HR Manager
ZurichMartina DübendorferFinance
ZurichSidar DurmazFinance
ZurichLelani EsterhuizenFinance
ZurichBarbara HessFinance
ZurichSuheila KammermannFinance
ZurichJane SiuFinance
LondonElizabeth WeedonHead of Finance & HR
LondonDiana AltamiranoFinance
LondonNatalia MalyukManagement Accountant
Aika Idinova
Monday to Friday
8 am – 5 pm (GMT)
Not available on the following public holidays:
- 01.01.2026 New Year’s Day
- 04.03.2026 Good Friday
- 04.06.2026 Easter Monday
- 05.04.2026 Early May Bank Holiday
- 05.25.2026 Spring Bank Holiday
- 08.31.2026 Summer Bank Holiday
- 24.12.2026 Christmas Eve (from 1 pm onwards)
- 12.25.2026 Christmas Day
- 12.28.2026 Day following Boxing Day
- 12.31.2026 New Year's Eve (from 1 pm onwards)