About us

We are a service provider for consulting & engineering. Around 80 experts support you in successfully implementing complex digitalization and transformation projects.

Our values


We focus on transformation and digitalization and accompany you on your way to a successful future. From consulting to the implementation of a project by our experts, your entrepreneurial goals always remain in focus.


As a company, we are ambitious and want to shape the future. Thanks to our many years of experience, we can quickly understand your needs and challenges and offer concrete, sensible and fair solutions that have a long-term effect for you.

Entrepreneurial thinking

Our claim is to be the best at what we do. We live this claim in the selection and choice of our experts as well as in the consulting and implementation of your projects.


We owe our growth to the trust of our clients and experts who have relied on our fairness for years. Such sustainable relationships are the cornerstone of our joint success.

Our numbers

Founding year
Number of experts

A selection of our team members

Pascal Thalmann
DevOps Engineer
Adrian Caraiman
Senior Software Engineer
Andreas Schmenk
Agile Coach & Scrum Master
Stefan Bechtloff
Senior DWH Consultant
Bekim Meta
Senior Fullstack Engineer
Benjamin Damm
Senior Frontend Engineer
Bruno Gubler
Senior SAS Engineer
Carmen Wyss
Marketing Manager
Christian Dubs
Senior Fullstack Engineer
Christian Rieser
Senior BI Consultant
Christine Mouton
Senior Business Analyst
Claude Leuchter
Dalay Mabboux
Senior Fullstack Engineer
Dani Schnider 
Principal Oracle & DWH Consultant
Daniel Gerek
Senior DWH Consultant
Dr. Pavel Saratchev
Senior DWH Consultant
Dr. Roland Pieringer
Managing Director
Fabrizio Colturato
Senior IT Test Manager
Hüseyin Gül
Ilija Kovcic
Ina Klose
Head of Corporate Services
Ivan Jelic
Managing Director
Laurenz Meister
Senior Consultant Project Lead
Marcus Rieche
Senior Software Developer
Michael Prost 
Senior Consultant
Michael Röse
Senior Consultant
Pascal Lauener
Director Software Engineering
Jethro I. Oudenbroek
Jennifer Mayer
Corporate Services Assistant
Peter Stampfli
Managing Director
Philip Achermann
Managing Director
Ralf Junker
Senior DWH Consultant
Renata Zeqiri
Stefanie Jordan
Senior Consultant
Stephan Kiefer
Head of Advisory Council

Advisory council

Today’s problems are usually complex and require differentiated perspectives. Although the internet offers a sheer flood of information, filtering and assessing it requires personal experience and trust in experts who have already made this experience. The Advisory Council deals with practical technical issues. Topics such as data engineering, enterprise agility, software engineering and CRM are discussed. The Callista Advisory Council aims to bring together experts from different disciplines and backgrounds.

The Callista Advisory Council has set itself the goal of bringing together experts from different disciplines and backgrounds.
Stephan Kiefer
Head of Advisory Council