Overview
Sii is a Polish IT services and outsourcing company and, measured by IT revenue earned in Poland, the largest locally founded services firm after the Asseco parent. ITwiz’s Best100 ranking, published on 10 July 2026, records Sii’s IT sales revenue at PLN 2.16 billion in 2025, against PLN 2.11 billion in 2024, placing it 15th among all IT companies operating in Poland.[7] Its Romanian subsidiary, Sii IT&C Services SRL, reported 2025 net turnover of RON 188.8 million and 361 average staff.[8] Revenue growth slowed to about 2% in 2025; the only services firms above it in the ITwiz table were the Asseco parent and two foreign-owned operations, Capgemini Polska (PLN 2.51 billion) and EPAM’s Polish entity (PLN 2.21 billion).
Appears in
Sii Poland alternatives and competitors
Alternatives to Sii Poland: companies ranked in the same lists.
EPAM Systems
3Pillar Global Romania- LeverX Poland
Jit Team
Scalo
Zitec
ITDS- NetRom Software
- Yonder
Globant
STX Next
Centric IT Solutions Romania
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