Sii Sp. z o. o

Sii Sp. z o. o is an IT, engineering and business process services group headquartered in Poland, with additional branches in Sweden, Ukraine, India and Malaysia. It staffs and delivers projects for large international clients, and it calls its employees Power People.

What Sii Sp. z o. o offers

• Software development and testing — building and verifying applications for client projects.
• Infrastructure and IT operations — managing client systems, including service desk and user support.
• System integration and maintenance — connecting platforms and keeping them running.
• Engineering and embedded systems — product engineering work for hardware-related industries.
• Platform and data services — Business Intelligence, Dynamics 365, Office 365, Salesforce and SAP.
• Business process outsourcing and cybersecurity — operational services and security work.

Who it works with

Clients come from banking and finance, insurance, telecommunications, high tech and semiconductors, utilities and energy, consumer goods, logistics and several other sectors.

Key facts

• Based in: Poland
• Team: more than 4 500 people
• Offices: Poland, Sweden, Ukraine, India and Malaysia
• Partnerships: Google Cloud and Workday HCM practices
• Recognition: ranked first among Polish IT service firms in the Computerworld TOP200 for the sixth time, in the 2025 edition