head
Your Contact Person at sis
Dipl.Ing Gerhard Schlüter
Dipl.Ing Gerhard Schlüter
Founder
Chief Executive Officer

+49 (0)40 - 41 43 89-21
gs@s-i-s.de
Melanie Wolke
Melanie Wolke
Executive Assistance
Project Management

+49 (0)40 - 41 43 89-0
mwo@s-i-s.de
Maria-Sander Ballnath
Maria-Sander Ballnath
Project Management
Controlling

+49 (0)40 - 41 43 89-22
msb@s-i-s.de
Bonan Wei
Bonan Wei
Graphic Design Planning
Digital Media

+49 (0)40 - 41 43 89-0
bwe@s-i-s.de
Tilman Stahlke
Tilman Stahlke
Senior Graphic Designer
Signage Conception

+49 (0)40 - 41 43 89-0
tst@s-i-s.de
Lars Nordmann
Lars Nordmann
Graphic Design
Conception

+49 (0)40 - 41 43 89-28
lno@s-i-s.de
Christian Rumpf
Christian Rumpf
Project Management Interior Design

+49 (0)40 - 41 43 89-11
cru@s-i-s.de
Matthias Hermann
Matthias Hermann
Project Manager

+49 (0)40 - 41 43 89-16
mhe@s-i-s.de
Nicole Frommholz
Nicole Frommholz
Administration and Services

+49 (0)40 - 41 43 89-16
nfr@s-i-s.de
Ina Staake
Ina Staake
Graficdesign Communication Design

+49 (0)40 - 41 43 89-13
ist@s-i-s.de
Anett Breite
Anett Breite
Graficdesign

+49 (0)40 - 41 43 89-27
abr@s-i-s.de
Mariia Matasova
Mariia Matasova
Architecture
Communication Design

+49 (0)40 - 41 43 89-0
mma@s-i-s.de
Mathias Bohlmann
Mathias Bohlmann
Digital Signage

+49 (0)40 - 41 43 89-0
mbo@s-i-s.de