Services
From data to AI Agents - and always the right experts for your IT initiatives.
We combine consulting on Data Platforms & Agentic AI with flexible staffing – delivering the right experts to immediately strengthen your team.
Data Platform Advisory
Enterprise Data Warehouse
Cloud Transformation
Data Lakehouse Architecture
2nd Opinion
Data Strategy
Maturity Assessment
Agentic AI Solutions
We design and implement Agentic AI solutions that autonomously perform routine tasks, seamlessly connect data, and accelerate decision-making. At Callista, we don’t just theorize about Agentic AI — we implement it. Our delivery model helps you go from initial idea to real-world results using a proven, iterative approach.
On Demand Staffing
Our experts serve as an extended workbench or drive innovation as part of a team or as individual contributors - whatever is the right support for our clients. We are also here to cover temporary peaks or bridge bottlenecks.
Data Warehouse
Data Lakehouse
Agentic AI
Software
Engineering
CRM
Collaboration
Cloud Platform
Engineering
Security
& IAM
Why Callista
Over 10 years of experience in building enterprise data platforms and workflow solutions — the ideal foundation for Agentic AI
A network of 150+ IT professionals at your fingertips.
Swiss partner proximity with scalable nearshore delivery (Zug ↔ Belgrade).
Direct access to our executive leadership — enabling fast decisions, personal commitment, and long-term accountability.
What our Clients are saying
Jannik Mersch
Head Data Compliance, Rosenxt
“Callista is our trusted partner guiding and enabling us towards a future proof platform.”
Patrick Kaufmann
Head Software Engineering, CSS
"We are very satisfied with Callista. In addition to their high level of technical expertise, the software developers are characterized by their solution-oriented approach. They were able to integrate into the team quickly and thus provide productive benefits within a short time to relieve our internal staff as needed."
Thomas Grossen
CEO, Trendcommerce
"Our collaboration with Callista was constructive and efficient in every respect. The interaction between their expertise in the project and their coaching in the agile world worked extremely well. The implementation was carried out as planned and is thanks to the commitment of the experts and our on-site and nearshore teams. For me, it is a typical success story."
© 2025 Callista
© 2025 Callista