About Us

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.

Numbers

50+

Clients

2010

Founded

150+

Experts

700+

Engagements

Leadership

Jethro I. Oudenbroek

Chairman

Dr. Roland Pieringer

Member of the Board

Philip Achermann

Managing Partner

Matthias Weidlich

Managing Partner

Dr. Andrea Abelli

Managing Partner

The Team Supporting our Growth

Jennifer Mayer

HR & Back Office Manager

Marc Lauener

Corporate Services/
Executive Assistant

Sven Roth

AI Solution Advisor

Görgis Halef

Key Account Manager

Slavisa Ostojić

Business Development Director

David Blam

Head Delivery

Ozleyis Cantekin

Recruiter

Renata Zeqiri

Recruiter/
Account Manager

Thorsten Stockner

Recruiter

Laura Sacco

Executive Assistant

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.