About Callista
Callista is a Swiss IT company specializing in providing experts and teams for consulting and engineering. With many years of experience in designing and building enterprise platforms and a clear focus on Agentic AI, we are shaping the digital future of our clients. We combine the proximity and quality of a Swiss partner with the scalability of our Nearshore Center and our Managed AI Agents.
Callista is an partner-managed IT company headquartered in Switzerland that specializes in providing experts, dynamic teams and managed capacity solutions for consulting, engineering and operational services.We combine the proximity and quality of a Swiss partner with the scalability of our nearshore center in Serbia.
Numbers
50+
Clients
2010
Founded
150+
Experts
700+
Engagements
Callista does not only provide services in the Information Technology domain but also supports leaders in the Life Sciences industry. Learn more about the services of all Callista companies here: https://www.callista-group.com
Leadership
Jethro I. Oudenbroek
Chairman
Dr. Roland Pieringer
Member of the Board
Andreas Gisler
Managing Director
Philip Achermann
Managing Director
The Team Supporting our Growth
Jennifer Mayer
HR & Backoffice
Marc Lauener
Corporate Services /
Executive Assistant
Goergis Halef
Key Account Manager
Slavisa Ostojic
Business Development
Director
Sven Roth
COO
David Blam
Head Delivery
Ozleyis Cantekin
Recruiter
Renata Zeqiri
Recruiter /
Account Manager
Dusan Jovanovic
Recruiter
Thorsten Stockner
Recruiter
MICA Mindset
MASTERY
Competent & Ambitioned
We can only achieve the best results with the best people. After all, the success of a project always depends to a large extent on the people who work on it. That is why we at Callista consistently rely on employees with above-average professional and personal skills and ambition.
INTEGRITY
Entrepreneurial and Fair
Our unwavering goal is always the sustainable business success of all those involved - for our clients as well as for ourselves. This attitude has always been our driving force. That is why we at Callista always think and act entrepreneurially and fairly. Because we can only be successful together if it is advantageous for everyone involved.
CARING
Tailor-made & Personal
Tailor-made solutions for the individual challenges of our clients are important to us. That's why we focus on tailor-made solutions for projects, both in terms of the approach and the result, which we always develop in close personal exchange with our clients and experts.
AGILITY
Lean & Efficient
The leaner and more efficiently we achieve our goal, the more fulfilling the project work and the more satisfying the result for everyone involved. That is why at Callista, we organise ourselves as lean and efficiently as possible.
© 2025 Callista
© 2025 Callista