# Professional services firms headquartered in Masovia

Tamtam tracks 76 professional services firms headquartered in Masovia. This list ranks the 50 largest by number of employees on LinkedIn, led by PwC Polska, KPMG Poland and Accenture Poland. Their median headcount is 409. Half of them were founded in 2005 or later. The most common headquarters are Warsaw (47).

The professional services firms in Masovia are predominantly large organizations, with a strong presence of global consulting and IT services providers. PwC Polska, KPMG Poland, and Deloitte Poland offer a wide array of audit, tax, and consulting solutions. IT services are well represented by companies like Accenture Poland, Billennium, and Lingaro, focusing on digitalization, AI, and data solutions.

All the listed companies are headquartered in Warsaw, indicating a centralization of professional services within the capital city. The firms span various sectors including business consulting, IT services, accounting, investment banking, and staffing, reflecting a diversified professional services landscape in the region.

🇵🇱 Masovia · 50 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [PwC Polska](https://www.tamtam.ai/c/pwc-polska) (pwc.pl)<br>Providing legal, tax, business, and audit solutions to diverse clients across sectors, supporting both large corporations and local enterprises. | Business Consulting and Services | 🇵🇱 Warsaw | 4,370 |  |
| 2 | [KPMG Poland](https://www.tamtam.ai/c/kpmg-poland) (kpmg.com)<br>Global organization providing professional services in audit, tax, finance, legal, and consulting Improving business results, managing risks, creating strategies, and adding value | Business Consulting and Services | 🇵🇱 Warsaw | 1,989 | 1990 |
| 3 | [Accenture Poland](https://www.tamtam.ai/c/accenture-poland) (accenture.com)<br>A global company providing professional services to leading businesses, governments, and NGOs, focusing on digitalization, operational optimization, profitability, and social impact | IT Services and IT Consulting | 🇵🇱 Warsaw | 1,909 | 1993 |
| 4 | [Billennium](https://www.tamtam.ai/c/billennium) (billennium.com)<br>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 | IT Services and IT Consulting | 🇵🇱 Warsaw | 1,381 | 2003 |
| 5 | [Lingaro](https://www.tamtam.ai/c/lingaro) (lingarogroup.com)<br>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. | IT Services and IT Consulting | 🇵🇱 Warsaw | 1,361 | 2008 |
| 6 | [AMG Biuro Rachunkowe](https://www.tamtam.ai/c/amg-biuro-rachunkowe) (amgbiuro.pl)<br>A family business with extensive experience since 1994, offering financial advice, HR and payroll management, and accounting solutions for a range of clients | Accounting | 🇵🇱 Warsaw | 1,330 | 1994 |
| 7 | [Deloitte Poland](https://www.tamtam.ai/c/deloitte-poland) (deloitte.com)<br>Deloitte provides professional advisory services in consulting, audit, tax, legal, risk management, financial advisory, forensic, AML, and compliance, with a global team of specialists | Management Consulting | 🇵🇱 Warsaw | 1,086 |  |
| 8 | [Sollers Consulting](https://www.tamtam.ai/c/sollers-consulting) (sollers.eu)<br>Support financial institutions with business transformations, digital capabilities, and software integration using low-code platforms and global technology partnerships. | IT Services and IT Consulting | 🇵🇱 Warsaw | 940 | 2000 |
| 9 | [CAG](https://www.tamtam.ai/c/cag) (cag.com.pl)<br>Independent investment banking partnership providing high-quality transaction advisory services in Poland and other CEE countries, with €12 billion in completed deals | Investment Banking | 🇵🇱 Warsaw | 779 | 1999 |
| 10 | [BlueSoft](https://www.tamtam.ai/c/bluesoft) (bluesoft.com)<br>Providing comprehensive IT services focusing on business value, quality delivery, team collaboration, and vendor independence since 2002. | Software Development | 🇵🇱 Warsaw | 728 | 2002 |
| 11 | [Britenet](https://www.tamtam.ai/c/britenet) (britenet.eu)<br>A technology firm with over 17 years of outsourcing experience, specializing in software development, cybersecurity, and IT services for various industries worldwide | IT Services and IT Consulting | 🇵🇱 Warsaw | 700 | 2006 |
| 12 | [Lionbridge Poland](https://www.tamtam.ai/c/lionbridge-poland) (lionbridge.com)<br>A leading provider of translation, digital marketing, content management, and application testing solutions, specializing in global brand consistency and local market adaptation | Translation and Localization | 🇵🇱 Warsaw | 669 | 1990 |
| 13 | [EWL Group](https://www.tamtam.ai/c/ewl-group) (ewl.com.pl)<br>Leading Polish recruitment agency offering comprehensive services for hiring workers from Eastern Europe and Asia, as well as professional employment solutions for various sectors | Staffing and Recruiting | 🇵🇱 Warsaw | 632 | 2007 |
| 14 | [Connectis_](https://www.tamtam.ai/c/connectis) (connectis.pl)<br>We develop developers and prepare them for the future, providing dedicated IT teams and specialists to clients efficiently and remotely | IT Services and IT Consulting | 🇵🇱 Warsaw | 617 | 2003 |
| 15 | [Urząd Dozoru Technicznego](https://www.tamtam.ai/c/urzad-dozoru-technicznego) (udt.gov.pl)<br>A Polish institution ensuring safe operation of technical devices through technical supervision, certification, training, and research laboratory services with specialized staff | Public Safety | 🇵🇱 Warsaw | 603 | 1911 |
| 16 | [Randstad Polska](https://www.tamtam.ai/c/randstad-polska) (randstad.pl)<br>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 | Staffing and Recruiting | 🇵🇱 Warsaw | 559 | 1994 |
| 17 | [Transition Technologies MS](https://www.tamtam.ai/c/transition-technologies-ms) (ttms.com)<br>Global IT services provider offering end-to-end solutions with expertise in niche technologies, staffed by over 800 specialists across multiple continents | IT Services and IT Consulting | 🇵🇱 Warsaw | 515 | 2015 |
| 18 | [KCR](https://www.tamtam.ai/c/kcr) (iconplc.com)<br>A clinical development solutions provider specializing in trial execution, consulting, and placement for biotechnology and pharmaceutical organizations worldwide | Pharmaceutical Manufacturing | 🇵🇱 Wola | 493 | 1997 |
| 19 | [EY Polska](https://www.tamtam.ai/c/ey-polska) (ey.com)<br>World leader in professional services offering audit, tax, advisory, and strategic consulting Committed to delivering high-quality services and creating a better working world | Accounting | 🇵🇱 Warsaw | 490 |  |
| 20 | [HRK S.A.](https://www.tamtam.ai/c/hrk-s-a) (hrk.pl)<br>Specializing in HR consulting, recruitment, assessment centers, and payroll services with expertise in various industries, offering global executive search solutions | Staffing and Recruiting | 🇵🇱 Warsaw | 455 | 2000 |
| 21 | [SoftTeco](https://www.tamtam.ai/c/softteco) (softteco.com)<br>A software development company offering custom services globally, with a highly professional team completing over 300 projects across various industries | IT Services and IT Consulting | 🇵🇱 Warsaw | 454 | 2008 |
| 22 | [CRIDO](https://www.tamtam.ai/c/crido) (crido.pl)<br>A comprehensive business support provider specializing in taxes, law, innovation, investments, advisory, digital solutions, financial modeling, and M&A services | Business Consulting and Services | 🇵🇱 Warsaw | 450 | 2005 |
| 23 | [Craftware](https://www.tamtam.ai/c/craftware) (craftware.com)<br>The company provides digital transformation services, technology consulting, body and team leasing in IT, specializing in Salesforce, UiPath, and Veeva solutions | IT Services and IT Consulting | 🇵🇱 Ochota | 444 | 2009 |
| 24 | [MS Services](https://www.tamtam.ai/c/ms-services) (msservices.pl)<br>Leading provider of outsourcing services in Poland specializing in efficient solutions supporting sales projects, with a focus on sales outsourcing, merchandising, and sales promotion | Outsourcing and Offshoring Consulting | 🇵🇱 Warsaw | 435 | 2003 |
| 25 | [C&F](https://www.tamtam.ai/c/c-and-f) (candf.com)<br>Global team specializing in data management, analytics, digital transformation, and GRC Developing low-code IT solutions while supporting community initiatives | IT Services and IT Consulting | 🇵🇱 Warsaw | 409 | 2001 |
| 26 | [CBRE Poland](https://www.tamtam.ai/c/cbre-poland) (cbre.pl)<br>A global leader in commercial real estate advisory and investment services, offering a wide range of integrated services to diverse clients worldwide | Real Estate | 🇵🇱 Warsaw | 392 | 2000 |
| 27 | [Modsen](https://www.tamtam.ai/c/modsen) (modsen-software.com)<br>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 | IT Services and IT Consulting | 🇵🇱 Warsaw | 379 | 2020 |
| 28 | [Fundacja Rozwoju Przedsiębiorczości Twój StartUP](https://www.tamtam.ai/c/fundacja-rozwoju-przedsiebiorczosci-twoj-startup) (twojstartup.pl)<br>A team of professionals helps individuals start successful businesses by providing support, low-cost implementation, and guidance towards success | Strategic Management Services | 🇵🇱 Warsaw | 358 | 2012 |
| 29 | [RÖDL Poland](https://www.tamtam.ai/c/rodl-poland) (roedl.pl)<br>A global provider of legal, tax, management and IT consulting services with offices in 50 countries and over 5,800 trusted professionals | Financial Services | 🇵🇱 Warsaw | 358 | 1992 |
| 30 | [Mmd](https://www.tamtam.ai/c/mmd) (mmdcee.com)<br>Leading consultancy specializing in public affairs and corporate communications across Eurasia, Central, Eastern, and South East Europe with extensive industry expertise. | Public Relations and Communications Services | 🇵🇱 Warsaw | 356 | 1985 |
| 31 | [Only Tax Biuro Rachunkowe](https://www.tamtam.ai/c/only-tax-biuro-rachunkowe) (onlytax.pl)<br>A young, dynamic accounting office with extensive experience in serving businesses, technology firms, startups, and programmers Emphasizing timeliness and comprehensive financial support | Accounting | 🇵🇱 Warsaw | 319 | 2016 |
| 32 | [Yalantis](https://www.tamtam.ai/c/yalantis) (yalantis.com)<br>In close collaboration with clients, Yalantis transforms innovative ideas into world-changing technical solutions, offering IT consulting services in various industries | IT Services and IT Consulting | 🇵🇱 Warsaw | 319 | 2008 |
| 33 | [Devire](https://www.tamtam.ai/c/devire) (devire.pl)<br>Tech-savvy HR solutions provider offering recruitment, IT contracting, RPO solutions, payroll consulting, and employer branding to connect organizations with the right talent | Staffing and Recruiting | 🇵🇱 Warsaw | 309 | 1987 |
| 34 | [Onwelo](https://www.tamtam.ai/c/onwelo) (onwelo.com)<br>A fast-growing technology firm in Poland providing modern IT solutions for organizations worldwide, with expertise in software development, testing, analytics, and automation | IT Services and IT Consulting | 🇵🇱 Warsaw | 294 | 2015 |
| 35 | [The Software House](https://www.tamtam.ai/c/the-software-house) (tsh.io)<br>Custom software development focused on client satisfaction Offering technology advice, tight-deadline project resources, project methodology, and expertise in various tech areas | Software Development | 🇵🇱 Warsaw | 287 | 2012 |
| 36 | [PKF Polska](https://www.tamtam.ai/c/pkf-polska) (pkfpolska.pl)<br>One of the largest audit and consulting networks in the world, with 30 years of experience in Poland Specializing in audit, financial advisory, and more | Business Consulting and Services | 🇵🇱 Warsaw | 277 | 1993 |
| 37 | [Nexio Management](https://www.tamtam.ai/c/nexio-management) (nexio.pl)<br>A software development and consulting firm specializing in providing high-quality IT products and services to clients in various industries | IT Services and IT Consulting | 🇵🇱 Warsaw | 263 | 2006 |
| 38 | [KR GROUP LTD.](https://www.tamtam.ai/c/kr-group-ltd) (krgroup.eu)<br>A fast-growing accounting and tax advisory group in Poland and CEE region, providing services to over 300 international clients in various industries | Accounting | 🇵🇱 Warsaw | 254 | 2000 |
| 39 | [Link Group](https://www.tamtam.ai/c/link-group-warszawa) (linkgroup.co)<br>Specializing in building tech teams for Fortune 500 companies and startups worldwide by providing top talent in software development, design, and project management | IT Services and IT Consulting | 🇵🇱 Warsaw | 244 | 2016 |
| 40 | [KBJ](https://www.tamtam.ai/c/kbj) (kbj.com.pl)<br>A market leader in SAP services, KBJ provides technology solutions and expertise to help organizations achieve digital transformation and become intelligent enterprises | Software Development | 🇵🇱 Warsaw | 239 | 2005 |
| 41 | [SSW](https://www.tamtam.ai/c/ssw-warsaw) (ssw.solutions)<br>A leading firm offering comprehensive law, tax, accounting, finance, and advisory services with a team of over 170 experts delivering value-added solutions globally | Legal Services | 🇵🇱 Warsaw | 235 | 2009 |
| 42 | [Wardynski & Partners](https://www.tamtam.ai/c/wardynski-and-partners) (wardynski.com.pl)<br>A leading law organization in Poland promoting civil society and the rule of law, offering expert legal services and resources | Legal Services | 🇵🇱 Warsaw | 225 | 1988 |
| 43 | [Salestube](https://www.tamtam.ai/c/salestube) (salestube.tech)<br>A leading e-commerce company offering comprehensive solutions, expertise in marketing, logistics, and consulting, with a focus on work-life balance | Advertising Services | 🇵🇱 Warsaw | 199 | 2016 |
| 44 | [Edge One Solutions](https://www.tamtam.ai/c/edge-one-solutions) (edge1s.com)<br>A reliable partner for resourcing, software development, and service solutions for global businesses, entrepreneurs, and startups to address technology needs efficiently | IT Services and IT Consulting | 🇵🇱 Ochota | 198 | 2014 |
| 45 | [Enxoo](https://www.tamtam.ai/c/enxoo) (enxoo.com)<br>It provides cloud solutions and consulting services for digital transformation, focusing on communications and various sectors using Salesforce technology. | IT Services and IT Consulting | 🇵🇱 Warsaw | 194 | 2012 |
| 46 | [deepsense.ai](https://www.tamtam.ai/c/deepsense-ai) (deepsense.ai)<br>AI solutions provider offering AI Guidance and Implementation Services for global clients Specializing in Generative AI, NLP, Computer Vision, Predictive Analytics, MLOps, and Data Engineering | IT Services and IT Consulting | 🇵🇱 Warsaw | 139 | 2014 |
| 47 | [Horus](https://www.tamtam.ai/c/horus-warsaw) (horus.pl)<br>A Polish software house specializing in digitizing business processes for large companies, creating architectures, and providing solutions like RPA They value respect, commitment, and honesty | Software Development | 🇵🇱 Warsaw | 129 | 2005 |
| 48 | [7bulls.com](https://www.tamtam.ai/c/7bulls-com) (7bulls.com)<br>This company specializes in providing efficient, cost-effective, and future-proof IT solutions for a wide range of clients, including major international corporations | Software Development | 🇵🇱 Warsaw | 87 | 1999 |
| 49 | [WebTalk Agency](https://www.tamtam.ai/c/webtalk-agency) (webtalk.pl)<br>An independent digital agency specializing in comprehensive online campaigns since 2010, putting digital first and offering complete brand communication solutions | Advertising Services | 🇵🇱 Warsaw | 85 | 2010 |
| 50 | [LTCA](https://www.tamtam.ai/c/ltca) (ltca.pl)<br>Professional legal and tax advisory services for Polish and foreign businesses, including listed entities, provided by experienced tax advisors, lawyers, and legal experts | Law Practice | 🇵🇱 Warsaw | 66 | 2014 |

## 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.

## More company lists in Masovia

- [The largest companies in Masovia](https://www.tamtam.ai/l/largest-companies-masovia) (984)
- [Multinational companies in Masovia](https://www.tamtam.ai/l/multinational-companies-masovia) (249)
- [IT services companies in Masovia](https://www.tamtam.ai/l/it-services-companies-masovia) (109)
- [Critical infrastructure operators in Masovia](https://www.tamtam.ai/l/critical-infrastructure-operators-masovia) (95)
- [Financial services firms in Masovia](https://www.tamtam.ai/l/financial-services-firms-masovia) (93)
- [Software Development companies in Masovia](https://www.tamtam.ai/l/software-development-companies-masovia) (91)
- [IT Services and IT Consulting companies in Masovia](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-masovia) (88)
- [Companies with in-house R&D in Masovia](https://www.tamtam.ai/l/r-and-d-companies-masovia) (84)
- [Retail chains in Masovia](https://www.tamtam.ai/l/retail-chains-masovia) (78)
- [Manufacturers in Masovia](https://www.tamtam.ai/l/manufacturers-masovia) (77)
- [Companies with a mobile app in Masovia](https://www.tamtam.ai/l/companies-with-mobile-app-masovia) (71)
- [Public sector organisations in Masovia](https://www.tamtam.ai/l/public-sector-organisations-masovia) (68)
- [Financial Services companies in Masovia](https://www.tamtam.ai/l/financial-services-companies-masovia) (59)
- [Corporate groups and holding companies in Masovia](https://www.tamtam.ai/l/holding-companies-masovia) (56)
- [SaaS companies in Masovia](https://www.tamtam.ai/l/saas-companies-masovia) (53)
- [Publicly traded companies in Masovia](https://www.tamtam.ai/l/publicly-traded-companies-masovia) (48)
- [Consumer goods companies in Masovia](https://www.tamtam.ai/l/consumer-goods-companies-masovia) (44)
- [Consulting firms in Masovia](https://www.tamtam.ai/l/consulting-firms-masovia) (43)
- [Education providers in Masovia](https://www.tamtam.ai/l/education-companies-masovia) (40)
- [Hardware manufacturers in Masovia](https://www.tamtam.ai/l/hardware-companies-masovia) (40)
- [Transportation, Logistics, Supply Chain and Storage companies in Masovia](https://www.tamtam.ai/l/transportation-logistics-supply-chain-and-storage-companies-masovia) (35)
- [E-commerce companies in Masovia](https://www.tamtam.ai/l/ecommerce-companies-masovia) (34)
- [Food and Beverage Manufacturing companies in Masovia](https://www.tamtam.ai/l/food-and-beverage-manufacturing-companies-masovia) (34)
- [Subscription businesses in Masovia](https://www.tamtam.ai/l/subscription-businesses-masovia) (34)

## The same list elsewhere in Poland

- [Professional services firms in Poland](https://www.tamtam.ai/l/professional-services-firms-poland) (149)
- [Professional services firms in Warsaw](https://www.tamtam.ai/l/professional-services-firms-warsaw) (76)

## The same list elsewhere

- [Professional services firms in the world](https://www.tamtam.ai/l/professional-services-firms-in-the-world) (24,737)
- [Professional services firms in Europe](https://www.tamtam.ai/l/professional-services-firms-in-europe) (13,698)

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Source: https://www.tamtam.ai/l/professional-services-firms-masovia