Impact Delivered
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.
Our Services
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
From Advisory to a productive Digital Worker: Use-Case-Discovery, Data Assessment, Workflow Assessment, Prototyping, Implementation
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.
Our Expertise
With over a decade of experience building enterprise-grade data platforms and workflow solutions, we provide the ideal foundation for Agentic AI. As your Swiss-based partner with a scalable nearshore setup (Zug ↔ Belgrade), we combine proximity with agility. And as a boutique-style team, you get direct access to our executive leadership — enabling fast decisions, personal commitment, and long-term accountability.
Data Warehouse
Data Lakehouse
Agentic AI
Software
Engineering
CRM &
Workflows
Cloud Platform
Engineering
Security
& IAM
Trusted by Industry Leaders
Trusted by Industry Leaders
Numbers
50+
Clients
120+
Experts
2010
Founded
700+
Engagements
Numbers
50+
Clients
150+
Experts
2010
Founded
700+
Engagements
Our Locations
Switzerland
General-Guisan-Strasse 8
CH - 6300 Zug
+41 43 540 56 85
Serbia
Balkanska 2
Belgrade
Join our Team
Are you looking for demanding projects and do you appreciate the exciting environment of our clients? Do you like working with cutting-edge technologies? Do you have a relevant track record in your area of expertise with years of experience?
Join our team and contribute to the creation of innovative IT solutions that drive business success. We are looking forward to receiving your application.
© 2025 Callista
© 2025 Callista