# The 50 largest companies in Poznań

Tamtam tracks 142 companies headquartered in Poznań. This list ranks the 50 largest by number of employees on LinkedIn, led by NETWORK-SECURITY-SOLUTIONS, Żabka Polska and Pepco. Their median headcount is 533. Half of them were founded in 1998 or later.

The largest companies in Poznań include a mix of established firms and younger enterprises, primarily in retail, technology, and financial services. Notable examples are Żabka Polska, a convenience store chain; Allegro, an online marketplace; and NETWORK-SECURITY-SOLUTIONS, specializing in network security. The list also features significant educational institutions like Adam Mickiewicz University.

A clear pattern among these companies is their strong local presence, with all listed headquarters located in Poznań. This indicates a concentration of major employers and economic activity within the city, spanning various sectors from manufacturing with Volkswagen Poznan to professional services like Phinance S.A.

🇵🇱 Poznań · 50 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [NETWORK-SECURITY-SOLUTIONS](https://www.tamtam.ai/c/network-security-solutions) (n-security.com)<br>Specializing in managing Linux/Unix servers and large network environments with a focus on customized solutions, quality, and technological innovation | Computer and Network Security | 🇵🇱 Poznań | 10,400 | 2010 |
| 2 | [Żabka Polska](https://www.tamtam.ai/c/zabka-polska) (zabkagroup.com)<br>A leading convenience store chain in Central-Eastern Europe with over 10,000 stores offering competitive prices, quality products, and a wide range of additional services | Retail | 🇵🇱 Poznań | 9,582 | 1998 |
| 3 | [Pepco](https://www.tamtam.ai/c/pepco) (pepco.eu)<br>A rapidly growing retailer offering clothing, home products, and toys at low prices in 18 European markets Involving employees in driving success | Retail | 🇵🇱 Poznań | 5,957 | 2004 |
| 4 | [Allegro](https://www.tamtam.ai/c/allegro-poznan) (jobs.allegro.eu)<br>Online marketplace connecting millions of Polish customers with over 135,000 merchants offering diverse products and fast, convenient delivery services. | Technology, Information and Internet | 🇵🇱 Poznań | 5,350 | 1999 |
| 5 | [Uniwersytet im. Adama Mickiewicza w Poznaniu](https://www.tamtam.ai/c/uniwersytet-im-adama-mickiewicza-w-poznaniu) (amu.edu.pl)<br>A leading academic institution in Poland known for its research, education, social responsibility, and commitment to diversity and freedom | Higher Education | 🇵🇱 Poznań | 1,608 | 1919 |
| 6 | [KAJK.PL](https://www.tamtam.ai/c/kajk-pl) (transportosobowy.com.pl)<br>The company specializes in providing consulting services for ABAP and development in languages such as C#, C++, Delphi, and Java | Software Development | 🇵🇱 Poznań | 1,598 |  |
| 7 | [Volkswagen Poznan](https://www.tamtam.ai/c/volkswagen-poznan) (volkswagen-poznan.pl)<br>A modern factory producing utility vehicles and components since 1993, specializing in VW models like Caddy, Transporter, and Crafter, as well as supplying parts for Volkswagen brands | Motor Vehicle Manufacturing | 🇵🇱 Poznań | 1,439 |  |
| 8 | [Allegro](https://www.tamtam.ai/c/allegro) (allegro.pl)<br>An online platform offering a wide range of products for sale with competitive prices, buyer protection, and a large team of experts | Technology, Information and Internet | 🇵🇱 Poznań | 1,411 | 1999 |
| 9 | [Phinance S.A.](https://www.tamtam.ai/c/phinance-s-a) (phinance.pl)<br>Leading financial advisory firm in Poland offering comprehensive services such as investments, insurance, mortgages, and financial solutions tailored to clients' evolving needs | Financial Services | 🇵🇱 Poznań | 1,282 | 2002 |
| 10 | [Content Writer](https://www.tamtam.ai/c/content-writer) (contentwriter.co)<br>Professional copywriting agency offering writing services in 7 languages, including SEO-optimized articles, website content, product descriptions, and more Fast, high-quality work guaranteed | Advertising Services | 🇵🇱 Poznań | 1,062 | 2019 |
| 11 | [Poznan University of Medical Sciences](https://www.tamtam.ai/c/poznan-university-of-medical-sciences) (ump.edu.pl)<br>A leading medical university in Poland offering diverse specialties in English, with strong emphasis on research, clinical teaching, and international collaborations | Higher Education | 🇵🇱 Poznań | 1,053 | 1919 |
| 12 | [Poznan University of Technology](https://www.tamtam.ai/c/poznan-university-of-technology) (put.poznan.pl)<br>A well-known technical university in Europe offering high-quality education and world-class scientific research and development work | Higher Education | 🇵🇱 Poznań | 925 |  |
| 13 | [Grant Thornton Poland](https://www.tamtam.ai/c/grant-thornton-poland) (grantthornton.pl)<br>A leading audit and advisory organization with over 53,000 employees worldwide, providing services in audit, advisory, and outsourcing to clients in 135 countries Operating in Poland since 1993 | Financial Services | 🇵🇱 Poznań | 818 | 1993 |
| 14 | [Transgourmet](https://www.tamtam.ai/c/transgourmet) (transgourmet.pl)<br>Wholesale network offering extensive food products and professional delivery services to businesses and gastronomy clients across Poland. | Wholesale | 🇵🇱 Poznań | 796 |  |
| 15 | [Grupa Enea](https://www.tamtam.ai/c/grupa-enea) (enea.pl)<br>A leading player in the Polish electricity market, managing the entire value chain from fuel to distribution, with a focus on safe energy delivery to 25 million customers | Electric Power Generation | 🇵🇱 Poznań | 789 |  |
| 16 | [TEB Edukacja Sp. z o. o.](https://www.tamtam.ai/c/teb-edukacja-sp-z-o-o) (teb.pl)<br>A nationwide network of private vocational schools offering a variety of educational programs, including medical and technical training, courses, and adult high school programs | Primary and Secondary Education | 🇵🇱 Poznań | 778 | 1994 |
| 17 | [#NIERUCHOMOŚCI](https://www.tamtam.ai/c/nieruchomosci) (hasztagnieruchomosci.pl)<br>A team of passionate professionals providing comprehensive real estate intermediary services, ensuring time and cost savings with transaction security and customer satisfaction | Real Estate | 🇵🇱 Poznań | 764 | 2018 |
| 18 | [Pekabex](https://www.tamtam.ai/c/pekabex) (pekabex.com)<br>A leading prefabricated industry in Poland, offering design, manufacturing, and assembly of structures for various construction projects with a focus on innovation and sustainability | Construction | 🇵🇱 Poznań | 710 | 1972 |
| 19 | [Poznan University of Economics And Business](https://www.tamtam.ai/c/poznan-university-of-economics-and-business) (poznan.pl)<br>Educating future leaders in economics, management, finance, international business, and commodity science through comprehensive programs and impactful research since 1926. | Higher Education | 🇵🇱 Poznań | 672 | 1926 |
| 20 | [Uniwersytet WSB Merito Poznań](https://www.tamtam.ai/c/uniwersytet-wsb-merito-poznan) (merito.pl)<br>A private university in Poland offering a wide range of undergraduate, postgraduate, MBA, and doctoral programs, known for its close business partnerships and high-quality education | Higher Education | 🇵🇱 Poznań | 645 | 1994 |
| 21 | [Dealz Poland](https://www.tamtam.ai/c/dealz-poland) (dealz.pl)<br>An international retail network offering a wide range of products, including international sweets, household cleaners, and beauty products from top brands at competitive prices | Retail | 🇵🇱 Poznań | 628 | 2017 |
| 22 | [Komputronik S.A.](https://www.tamtam.ai/c/komputronik-s-a) (komputronik.pl)<br>A leading telecommunication and IT company in Poland, known for stable growth, quality service, and high standards for employees | IT Services and IT Consulting | 🇵🇱 Poznań | 588 | 1996 |
| 23 | [Enea Operator](https://www.tamtam.ai/c/enea-operator) (operator.enea.pl)<br>A major energy operator in Poland managing distribution systems across six provinces, delivering over 20 TWh of electricity annually to millions of customers | Electric Power Transmission, Control, and Distribution | 🇵🇱 Poznań | 582 |  |
| 24 | [Poznan University of Technology](https://www.tamtam.ai/c/poznan-university-of-technology-poznan) (put.poznan.pl)<br>An educational institution in Poznan with roots dating back to 1919, offering courses in mechanical engineering, electrical engineering, and machine construction | Higher Education | 🇵🇱 Poznań | 578 |  |
| 25 | [SGB-Bank S.A.](https://www.tamtam.ai/c/sgb-bank-s-a) (sgb.pl)<br>SGB-Bank SA is a place for energetic, optimistic, and tech-savvy specialists who work together to achieve goals and have fun They constantly seek new solutions | Banking | 🇵🇱 Poznań | 533 | 1990 |
| 26 | [ICG](https://www.tamtam.ai/c/icg-poznan) (premium.pl)<br>Consulting company specializing in implementing, developing, maintaining, and outsourcing SAP systems Authorized Gold partner of SAP Polska and one of the largest SAP consulting companies in Poland | IT Services and IT Consulting | 🇵🇱 Poznań | 511 | 1998 |
| 27 | [Postal](https://www.tamtam.ai/c/postal) (postal.pl)<br>An international business specializing in trade and development, based in Poland Located in Poznan, they operate in Greater Poland Voivodeship | International Trade and Development | 🇵🇱 Poznań | 484 |  |
| 28 | [Beiersdorf Polska](https://www.tamtam.ai/c/beiersdorf-polska) (niveapolska.pl)<br>A leading skin care company with top brands like NIVEA & Eucerin, focused on providing excellent products and a supportive work environment | Personal Care Product Manufacturing | 🇵🇱 Poznań | 476 |  |
| 29 | [Netguru](https://www.tamtam.ai/c/netguru) (netguru.com)<br>A digital acceleration consultancy offering services in product development, software solutions, and product design to a wide range of companies globally | IT Services and IT Consulting | 🇵🇱 Poznań | 449 | 2008 |
| 30 | [Volkswagen Group Polska](https://www.tamtam.ai/c/volkswagen-group-polska) (vw-group.pl)<br>Importer, wholesaler, and distributor of six automotive brands in Poland, supporting sales, spare parts, and dealership networks. | Retail Motor Vehicles | 🇵🇱 Poznań | 444 | 2012 |
| 31 | [Uniwersytecki Szpital Kliniczny w Poznaniu](https://www.tamtam.ai/c/uniwersytecki-szpital-kliniczny-w-poznaniu) (usk.poznan.pl)<br>A hospital with over 200 years of experience, dedicated to serving patients, education, and advancement in medical science through top-class specialists | Hospitals and Health Care | 🇵🇱 Poznań | 440 |  |
| 32 | [PSI Software – Polska & CEE](https://www.tamtam.ai/c/psi-software-polska-and-cee) (psi.pl)<br>A leading provider of computer systems for production companies and pipes&wires sector, offering products in the Polish market and contributing to product development | IT Services and IT Consulting | 🇵🇱 Poznań | 439 | 2004 |
| 33 | [Carlsberg Shared Services](https://www.tamtam.ai/c/carlsberg-shared-services) (carlsberggroup.com)<br>Global business center within Carlsberg Group providing accounting, planning, financial controlling, logistics, and master data services with a diverse team of specialists | Food and Beverage Services | 🇵🇱 Poznań | 432 | 2006 |
| 34 | [Family Shop](https://www.tamtam.ai/c/family-shop) (family-shop.pl)<br>Start your own business with Family Shop's support, open a franchise store for new and used clothing in your town High-quality goods sourced internationally Partner training provided | Retail Apparel and Fashion | 🇵🇱 Poznań | 424 | 2000 |
| 35 | [Collegium Da Vinci](https://www.tamtam.ai/c/collegium-da-vinci) (cdv.pl)<br>Leading higher education institution ensuring comprehensive professional start for students through cooperation with the business environment. | Higher Education | 🇵🇱 Poznań | 415 | 1996 |
| 36 | [Volkswagen Group Services sp. z o.o.](https://www.tamtam.ai/c/volkswagen-group-services-sp-z-o-o) (volkswagen-groupservices.pl)<br>We provide modern shared services and operational support to European companies within Volkswagen Group, with a focus on accounting and expanding service offerings | Motor Vehicle Manufacturing | 🇵🇱 Poznań | 410 | 2016 |
| 37 | [Lisner](https://www.tamtam.ai/c/lisner) (lisner.pl)<br>A reliable leader in producing fish products, salads, pastes, and ready meals, combining tradition with innovation for high-quality products and employee satisfaction | Food and Beverage Manufacturing | 🇵🇱 Poznań | 409 | 1991 |
| 38 | [STX Next](https://www.tamtam.ai/c/stx-next) (stxnext.com)<br>Specialized AI-powered software development with expertise in Python, data engineering, machine learning, cloud services, serving global businesses across sectors. | IT Services and IT Consulting | 🇵🇱 Poznań | 397 | 2005 |
| 39 | [YES Bizuteria](https://www.tamtam.ai/c/yes-bizuteria) (yes.pl)<br>Bringing a new campaign to create a better world for women in partnership with Fundacja Wisławy Szymborskiej Visit the link for more information | Retail Luxury Goods and Jewelry | 🇵🇱 Poznań | 385 | 1981 |
| 40 | [Grupa MTP](https://www.tamtam.ai/c/grupa-mtp) (mtp.pl)<br>A long-standing company specializing in well-designed international events, including trade fairs, congresses, conferences, and cultural and sports events attracting a global audience | Events Services | 🇵🇱 Poznań | 357 | 1921 |
| 41 | [DomData](https://www.tamtam.ai/c/domdata) (domdata.pl)<br>A Polish IT company with 15 years of experience, offering process platform Ferryt BPM, analytical platform InForum, and comprehensive solutions for banking sector | IT Services and IT Consulting | 🇵🇱 Poznań | 353 | 1994 |
| 42 | [Poznańskie Centrum Superkomputerowo-Sieciowe](https://www.tamtam.ai/c/poznanskie-centrum-superkomputerowo-sieciowe)<br>Providing world-class e-infrastructure for science, developing ICT-based innovations for industry, and promoting social innovation to combat digital exclusion. | Computer Networking Products | 🇵🇱 Poznań | 339 | 1993 |
| 43 | [Profitroom](https://www.tamtam.ai/c/profitroom) (profitroom.com)<br>Innovative technology for hotels to drive revenue and deliver exceptional guest experiences, supported by a team of experts in 7 languages | Technology, Information and Internet | 🇵🇱 Poznań | 332 | 2008 |
| 44 | [PMT](https://www.tamtam.ai/c/pmt) (pmt.com.pl)<br>Specializing in trade and logistics, we provide full sales support with custom software tools, helping clients increase profits for over 20 years | Outsourcing and Offshoring Consulting | 🇵🇱 Poznań | 319 | 1997 |
| 45 | [Łukasiewicz – Poznański Instytut Technologiczny](https://www.tamtam.ai/c/lukasiewicz-poznanski-instytut-technologiczny) (pit.lukasiewicz.gov.pl)<br>Specializing in logistics and digital economy, the organization conducts research, development, and advisory services to optimize business processes and enhance public services | Research Services | 🇵🇱 Poznań | 315 | 2022 |
| 46 | [MIKRONIKA Sp. z o.o.](https://www.tamtam.ai/c/mikronika-sp-z-o-o) (mikronika.pl)<br>Leading supplier of industrial automation system solutions and software producer, offering tailored modular solutions, with own equipment base and production facilities | Appliances, Electrical, and Electronics Manufacturing | 🇵🇱 Poznań | 310 | 1983 |
| 47 | [Aquanet SA](https://www.tamtam.ai/c/aquanet-sa) (aquanet.pl)<br>A leading provider of water supply and sewage services in Poland, focusing on improving quality of life through responsible and professional management of water resources | Utilities | 🇵🇱 Poznań | 284 |  |
| 48 | [Forcom Sp. z o.o.](https://www.tamtam.ai/c/forcom-sp-z-o-o) (forcom.eu)<br>A provider of complete IT solutions for large retail chains, offering high-quality software, back office systems, and EFT transaction handling services | Software Development | 🇵🇱 Poznań | 250 | 1991 |
| 49 | [RSM Poland](https://www.tamtam.ai/c/rsm-poland) (rsmpoland.pl)<br>Financial audit, tax, and consulting services, including accounting, HR, payroll, reporting outsourcing, corporate services, transaction advisory, and IT consulting. | Accounting | 🇵🇱 Poznań | 245 | 1991 |
| 50 | [Forum Media Polska Sp. z o.o.](https://www.tamtam.ai/c/forum-media-polska-sp-z-o-o) (forum-media.pl)<br>Publisher of 50 specialized magazines, organizing conferences, offering online courses, hosting events, and providing e-learning platforms and educational materials | Book and Periodical Publishing | 🇵🇱 Poznań | 219 |  |

## 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 11, 2026.

## More company lists in Poznań

- [Multinational companies in Poznań](https://www.tamtam.ai/l/multinational-companies-poznan) (32)

## The same list elsewhere in Poland

- [The largest companies in Poland](https://www.tamtam.ai/l/largest-companies-poland) (2,488)
- [The largest companies in Masovia](https://www.tamtam.ai/l/largest-companies-masovia) (984)
- [The largest companies in Lesser Poland](https://www.tamtam.ai/l/largest-companies-lesser-poland) (232)
- [The largest companies in Lower Silesia](https://www.tamtam.ai/l/largest-companies-lower-silesia) (194)
- [The largest companies in Silesia](https://www.tamtam.ai/l/largest-companies-silesia) (190)
- [The largest companies in Greater Poland](https://www.tamtam.ai/l/largest-companies-greater-poland) (187)
- [The largest companies in Pomerania](https://www.tamtam.ai/l/largest-companies-pomerania) (158)
- [The largest companies in Łódź Voivodeship](https://www.tamtam.ai/l/largest-companies-lodz-voivodeship) (73)
- [The largest companies in Kuyavia-Pomerania](https://www.tamtam.ai/l/largest-companies-kuyavia-pomerania) (53)
- [The largest companies in Warsaw](https://www.tamtam.ai/l/largest-companies-warsaw) (872)
- [The largest companies in Kraków](https://www.tamtam.ai/l/largest-companies-krakow) (181)
- [The largest companies in Wrocław](https://www.tamtam.ai/l/largest-companies-wroclaw) (166)
- [The largest companies in Gdańsk](https://www.tamtam.ai/l/largest-companies-gdansk) (80)
- [The largest companies in Katowice](https://www.tamtam.ai/l/largest-companies-katowice) (59)
- [The largest companies in Łódź](https://www.tamtam.ai/l/largest-companies-lodz) (53)
- [The largest companies in Gdynia](https://www.tamtam.ai/l/largest-companies-gdynia) (41)
- [The largest companies in Gliwice](https://www.tamtam.ai/l/largest-companies-gliwice) (29)
- [The largest companies in Lublin](https://www.tamtam.ai/l/largest-companies-lublin) (28)
- [The largest companies in Rzeszów](https://www.tamtam.ai/l/largest-companies-rzeszow) (26)
- [The largest companies in Szczecin](https://www.tamtam.ai/l/largest-companies-szczecin) (26)

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Source: https://www.tamtam.ai/l/largest-companies-poznan