These Polish professional services companies are mostly large firms, with a strong emphasis on IT services and consulting. Sii Poland, with 6243 employees, offers technology consulting and digital transformation. Comarch provides IT business solutions globally, while PwC Polska and KPMG Poland specialize in business consulting, audit, and tax services. Accenture Poland focuses on digitalization and operational optimization.
A significant concentration of these companies, including Billennium and Lingaro, are headquartered in Warsaw, indicating a central hub for professional services in Poland. AMG Biuro Rachunkowe provides financial advice and accounting solutions. Spyrosoft and WASKO offer software development and IT solutions across various industries.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Sii Polandsii.pl
Provides technology consulting, AI-driven digital transformation, engineering, and business services, supporting clients in testing, software development, infrastructure management, and system integration. |
6,243 | |||
| 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 |
PwC Polskapwc.pl
Providing legal, tax, business, and audit solutions to diverse clients across sectors, supporting both large corporations and local enterprises. |
4,370 | |||
| 4 |
KPMG Polandkpmg.com
Global organization providing professional services in audit, tax, finance, legal, and consulting Improving business results, managing risks, creating strategies, and adding value |
1,989 | |||
| 5 |
Accenture Polandaccenture.com
A global company providing professional services to leading businesses, governments, and NGOs, focusing on digitalization, operational optimization, profitability, and social impact |
1,909 | |||
| 6 |
Billenniumbillennium.com
Global technology consulting and outsourcing company offering IT solutions, staff augmentation, managed services, and technology solutions with a focus on AI, cloud, and software development |
1,381 | |||
| 7 |
Lingarolingarogroup.com
Empowers global enterprises to achieve measurable outcomes with data and AI, providing end-to-end solutions from strategy to scalable platforms for actionable insights and automation. |
1,361 | |||
| 8 |
AMG Biuro Rachunkoweamgbiuro.pl
A family business with extensive experience since 1994, offering financial advice, HR and payroll management, and accounting solutions for a range of clients |
1,330 | |||
| 9 |
Spyrosoftspyro-soft.com
A global group providing consulting and software development services across various industries, specializing in digital transformation and offering a wide range of technological solutions |
1,156 | |||
| 10 | 1,120 | ||||
| 11 |
Deloitte Polanddeloitte.com
Deloitte provides professional advisory services in consulting, audit, tax, legal, risk management, financial advisory, forensic, AML, and compliance, with a global team of specialists |
1,086 | |||
| 12 |
Exact x Forestall Groupexactforestall.com
Global leader in quality control solutions for automotive industry suppliers and manufacturers, also serving electronics, appliances, and cosmetics industries Operations in 13 countries |
989 | |||
| 13 |
Sollers Consultingsollers.eu
Support financial institutions with business transformations, digital capabilities, and software integration using low-code platforms and global technology partnerships. |
940 | |||
| 14 |
Grant Thornton Polandgrantthornton.pl
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 |
818 | |||
| 15 |
PGS Software S.A.pgs-soft.com
Innovative team of experts providing agile, reliable software solutions from design to development, specializing in digital innovation and fostering long-lasting relationships |
808 | |||
| 16 |
CAGcag.com.pl
Independent investment banking partnership providing high-quality transaction advisory services in Poland and other CEE countries, with €12 billion in completed deals |
779 | |||
| 17 |
BlueSoftbluesoft.com
Providing comprehensive IT services focusing on business value, quality delivery, team collaboration, and vendor independence since 2002. |
728 | |||
| 18 |
Future Processingfuture-processing.com
Advises and delivers tech strategy, transforming business ambitions into measurable outcomes for clients in various regulated industries. |
703 | |||
| 19 |
Britenetbritenet.eu
A technology firm with over 17 years of outsourcing experience, specializing in software development, cybersecurity, and IT services for various industries worldwide |
700 | |||
| 20 |
Lionbridge Polandlionbridge.com
A leading provider of translation, digital marketing, content management, and application testing solutions, specializing in global brand consistency and local market adaptation |
669 | |||
| 21 | 661 | ||||
| 22 |
EWL Groupewl.com.pl
Leading Polish recruitment agency offering comprehensive services for hiring workers from Eastern Europe and Asia, as well as professional employment solutions for various sectors |
632 | |||
| 23 |
Connectis_connectis.pl
We develop developers and prepare them for the future, providing dedicated IT teams and specialists to clients efficiently and remotely |
617 | |||
| 24 |
Urząd Dozoru Technicznegoudt.gov.pl
A Polish institution ensuring safe operation of technical devices through technical supervision, certification, training, and research laboratory services with specialized staff |
603 | |||
| 25 |
Randstad Polskarandstad.pl
A global leader in HR consulting and temporary staffing, supporting individuals in finding the right jobs and businesses in hiring top talent, while staying up-to-date with market trends |
559 | |||
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. | |||||
| 26 |
MMLmml.org.pl
The company specializes in acquiring approvals from property owners for linear investments and infrastructure projects, providing comprehensive support throughout the process |
545 | |||
| 27 |
ALTEN Polskaaltenpolska.pl
Leader in Engineering and IT services supporting customer's development strategies in innovation, R&D, and technological information systems across various industries globally |
544 | |||
| 28 | 519 | ||||
| 29 |
Transition Technologies MSttms.com
Global IT services provider offering end-to-end solutions with expertise in niche technologies, staffed by over 800 specialists across multiple continents |
515 | |||
| 30 |
KCRiconplc.com
A clinical development solutions provider specializing in trial execution, consulting, and placement for biotechnology and pharmaceutical organizations worldwide |
493 | |||
| 31 | 490 | ||||
| 32 |
Xebia Polandxebia.com
Global network of technology enthusiasts providing tailored solutions, focusing on development and knowledge sharing with over 20 years of experience |
485 | |||
| 33 |
Biuro Projektowekonopski.pl
A Poland-based design office providing architectural and engineering services |
482 | |||
| 34 | 455 | ||||
| 35 |
SoftTecosoftteco.com
A software development company offering custom services globally, with a highly professional team completing over 300 projects across various industries |
454 | |||
| 36 | 450 | ||||
| 37 |
Netgurunetguru.com
A digital acceleration consultancy offering services in product development, software solutions, and product design to a wide range of companies globally |
449 | |||
| 38 |
Craftwarecraftware.com
The company provides digital transformation services, technology consulting, body and team leasing in IT, specializing in Salesforce, UiPath, and Veeva solutions |
444 | |||
| 39 |
MS Servicesmsservices.pl
Leading provider of outsourcing services in Poland specializing in efficient solutions supporting sales projects, with a focus on sales outsourcing, merchandising, and sales promotion |
435 | |||
| 40 |
Scaloscalosoft.com
This company uses software to facilitate business growth, operations scaling, and increased productivity for organizations |
412 | |||
| 41 | 409 | ||||
| 42 |
CBRE Polandcbre.pl
A global leader in commercial real estate advisory and investment services, offering a wide range of integrated services to diverse clients worldwide |
392 | |||
| 43 |
BPXbpxglobal.com
Global consulting firm specializing in business transformation through ERP, BI, and IT Service Management solutions, with established partnerships and certified expertise Offering career opportunities for problem solvers |
389 | |||
| 44 |
Gi Group Polskagigroup.com
Poland’s largest HR provider offering innovative workforce solutions such as permanent placement, temporary staffing, outplacement, and outsourcing services since 1999 |
386 | |||
| 45 |
Modsenmodsen-software.com
Global software development company offering services such as custom software development, team augmentation, business analysis, UI/UX design, and quality assurance testing Specializing in various industries |
379 | |||
| 46 |
Software Mansionswmansion.com
A team of engineers in Kraków, Poland, with expertise in complex projects for clients in NY and SF Emphasizing agile methodologies, diverse technologies, and open source contributions |
377 | |||
| 47 |
HICRONhicron.com
Company implements, integrates, and services SAP Solutions, delivering world-class code in DevOps, Cloud Services, Digital Product Design, and Software Development globally. Advises and offers tailored software. |
369 | |||
| 48 |
Geofizyka Torun S.A.geofizyka.pl
The company provides innovative geophysical, geological, and geotechnical solutions for the energy sector globally, with a focus on exploration and production intensification |
368 | |||
| 49 |
Fundacja Rozwoju Przedsiębiorczości Twój StartUPtwojstartup.pl
A team of professionals helps individuals start successful businesses by providing support, low-cost implementation, and guidance towards success |
358 | |||
| 50 |
RÖDL Polandroedl.pl
A global provider of legal, tax, management and IT consulting services with offices in 50 countries and over 5,800 trusted professionals |
358 | |||
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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 11, 2026.
More company lists in Poland
- The largest companies in Poland 2,488
- Multinational companies in Poland 585
- IT services companies in Poland 312
- Software Development companies in Poland 301
- Companies with in-house R&D in Poland 290
- Manufacturers in Poland 268
- IT Services and IT Consulting companies in Poland 213
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- Critical infrastructure operators in Poland 147
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