These are managed service providers operating in Poland. The companies listed are primarily mid-sized to large enterprises, with a strong focus on IT services, software development, and computer and network security. For example, NETWORK-SECURITY-SOLUTIONS specializes in managing Linux/Unix servers, Comarch provides global IT business solutions, and BCC focuses on SAP services and IT outsourcing. Fujitsu Poland offers IT infrastructure solutions, while NASK is a Polish data networks operator and cybersecurity provider.
A clear pattern among these companies is their specialization in comprehensive IT solutions for businesses. Many are headquartered in major Polish cities like Warsaw and Kraków, but there is also a significant presence in Poznań and Gliwice. Several companies, such as WASKO and Atman, were founded in the late 1980s and early 1990s, indicating a mature sector.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
NETWORK-SECURITY-SOLUTIONSn-security.com
Specializing in managing Linux/Unix servers and large network environments with a focus on customized solutions, quality, and technological innovation |
10,400 | |||
| 2 |
Comarchkariera.comarch.pl
Global IT business solution provider optimizing operational and business processes, with over 7000 experienced professionals and software implementation in 40,000+ companies worldwide |
5,004 | |||
| 3 |
BCCbccgroup.com
A consulting company specializing in SAP services, IT outsourcing, and software development, focusing on big Polish companies and international corporations worldwide |
2,981 | |||
| 4 | 2,044 | ||||
| 5 |
Fujitsu Polandfujitsu.com
Provider of IT infrastructure solutions, products, and services for clients ranging from large enterprises to individual customers, specializing in dynamic infrastructure concepts |
1,497 | |||
| 6 | 1,120 | ||||
| 7 | 1,068 | ||||
| 8 | 935 | ||||
| 9 | 661 | ||||
| 10 |
Atos Polandatos.net
Leading Polish IT company formed by merging AMG.net and Bull Polska, providing comprehensive IT solutions and services locally. |
626 | |||
| 11 | 548 | ||||
| 12 | 493 | ||||
| 13 | 475 | ||||
| 14 | 390 | ||||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 15 |
Axians IT Polandaxians.pl
Operating within the digital transformation realm, part of an international group, specializing in ICT solutions from telecommunications infrastructure to data management |
388 | |||
| 16 | 370 | ||||
| 17 |
Poznańskie Centrum Superkomputerowo-Sieciowe
Providing world-class e-infrastructure for science, developing ICT-based innovations for industry, and promoting social innovation to combat digital exclusion. |
339 | |||
| 18 | 315 | ||||
| 19 | 310 | ||||
| 20 | 309 | ||||
| 21 |
Redge Technologiesredge.com
A leading provider of OTT technologies in Central and Eastern Europe, specializing in high-performance video streaming platforms and DDoS protection solutions for broadcasters and telcos |
229 | |||
| 22 |
Vodenovodeno.com
A leading European Banking-as-a-Service provider offering innovative financial solutions backed by blockchain technology and global investors |
226 | |||
| 23 |
Integrated Solutions Polskaintegratedsolutions.pl
Specialized ICT integrator, part of Orange Polska Group, offering end-to-end solutions in IT, Telco, Unified Communication, Mobility, Data Center, Security, Networking |
221 | |||
| 24 |
ICM University of Warsawicm.edu.pl
A leading supercomputing and data science center in Central Europe, providing innovative solutions to organizations in various industries through advanced computational challenges and data-driven modeling |
69 | |||
| 25 |
Green Capital S.A.greencapitalsa.ai
Develops, constructs, and operates renewable energy projects, specializing in photovoltaic and wind farms and energy storage, contributing to clean electricity production and energy security. |
64 | |||
| 26 |
OPEGIEKAopegieka.pl
Develops innovative geoinformatics solutions using state-of-the-art technologies for business, administration, and society, covering design, execution, implementation, and maintenance of projects. |
64 | |||
| 27 |
Poznańskie Centrum Superkomputerowo-Sieciowe | PCSSpcss.pl
A research institute affiliated with the Institute of Bioorganic Chemistry that focuses on ICT innovations for digital science and economy applications worldwide |
38 | |||
| 28 |
merce.com: eCommerce platformmerce.com
merce enables organizations to realize their unique commerce vision by bridging technology and expertise, covering every aspect of the digital commerce stack |
30 | |||
| 29 |
Kiwee Softwarekiwee.eu
Passionate team building top eCommerce ecosystems, prioritizing client needs for secure shopping experiences Embracing diversity, innovation, and a family-like culture |
9 | |||
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How this list is built
Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 12, 2026.
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