Sii Poland celebrates its 20th Anniversary: From a one‑person startup to a team of 7 500+ IT experts

In 2026, Sii Poland celebrates its 20th anniversary – a milestone that marks one of the most dynamic growth stories in the Polish technology sector. The company was founded in 2006 by Grégoire Nitot in a small studio apartment on Szpitalna Street in Warsaw, and over the past two decades has grown into one of the largest IT service providers in the country. Today, Sii Poland employs more than 7 500 experts and partners with over 200 international clients.

What began as a one‑person startup has, over 20 years, transformed into an organization with a strong position in the European IT market. Today, Sii Poland is the #1 technology consulting provider in Poland, a leader in digital transformation, and a major player in engineering and business services supporting companies in innovation and growth.

Offer tailored to client needs and industry trends

Sii Poland currently collaborates with more than 200 clients in Poland and abroad, including brands such as Puma, mBank, Diagnostyka+, Worldline, QIAGEN, and Viessman. Sii’s experts support customers across all key sectors, including automotive, healthcare, high‑tech, retail, banking, the public sector, and many more.

The company’s wide range of services includes cloud solutions, IT infrastructure, engineering, cybersecurity, quality assurance testing, Service Desk, software development, and this represents only a part of Sii’s full portfolio. Thanks to partnerships with leading technology providers such as Microsoft, Google, Adobe, and Salesforce, the organization delivers advanced, cutting‑edge solutions tailored to the latest industry trends and client needs.

International expansion and office growth

Over the past two decades, the company’s growth has extended beyond business development to include substantial team expansion. Sii Poland has built a team of more than 7 500 employees, delivering projects from 14 offices in Poland and 3 international locations in Sweden, Ukraine, and India. What’s more, Sii plans to continue its global expansion to reach a broader pool of clients and respond to evolving market demands.

In the anniversary video for the 20-year celebrations, Grégoire Nitot, CEO & Founder of Sii Poland, reflects on the company’s journey from a startup to a globally recognized technology organization. He emphasizes that this success is the result of the collective work of thousands of exceptional people – their passion, dedication, and ambition build the company every day.

Watch the full video here: