# Professional services firms headquartered in Amsterdam

Tamtam tracks 153 professional services firms headquartered in Amsterdam. This list ranks the 30 largest by number of employees on LinkedIn, led by Arcadis, TMF Group and BearingPoint. Their median headcount is 1,526. Half of them were founded in 2000 or later.

This selection of professional services firms in Amsterdam includes large groups and mid-sized companies. Arcadis delivers transformative projects globally, TMF Group provides global administrative and financial support, and BearingPoint offers tailored consulting solutions. PwC Nederland provides advisory, assurance, digital, and tax services, while Randstad Enterprise offers global talent solutions. HSO helps businesses modernize operations through Microsoft cloud solutions.

The companies here primarily offer business consulting, IT services, and staffing solutions. There is also a strong presence of financial and legal advisory firms. Most of these companies were founded between the late 1980s and early 2000s, indicating a period of significant growth in professional services in Amsterdam.

🇳🇱 Amsterdam · 30 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Arcadis](https://www.tamtam.ai/c/arcadis) (arcadis.com)<br>delivering transformative projects globally addressing climate, energy, and livable cities through design, engineering, architecture, and consulting for a better future | Professional Services | 🇳🇱 Amsterdam | 42,295 |  |
| 2 | [TMF Group](https://www.tamtam.ai/c/tmf-group) (tmf-group.com)<br>Provides global administrative, financial, and legal support, helping companies navigate complex regulations and operate safely across numerous international markets. | Financial Services | 🇳🇱 Amsterdam | 11,186 | 1988 |
| 3 | [BearingPoint](https://www.tamtam.ai/c/bearingpoint) (bearingpoint.com)<br>Independent consulting firm offering tailored solutions for complex business environments, applying deep industry expertise to help clients achieve their goals globally | Business Consulting and Services | 🇳🇱 Amsterdam | 10,074 | 2002 |
| 4 | [Randstad Enterprise](https://www.tamtam.ai/c/randstad-enterprise) (randstadenterprise.com)<br>A global talent solutions provider, offering integrated talent acquisition and development services to help companies build skilled and agile workforces | Human Resources Services | 🇳🇱 Amsterdam | 4,758 | 2001 |
| 5 | [Brunel](https://www.tamtam.ai/c/brunel) (brunel.net)<br>Global specialist delivering custom project and workforce solutions for industry transformations using technology and talent across various sectors worldwide | Staffing and Recruiting | 🇳🇱 Amsterdam | 4,118 | 1975 |
| 6 | [PwC Nederland](https://www.tamtam.ai/c/pwc-nederland) (pwc.nl)<br>A global company providing advisory, assurance, digital, and tax services aiming to solve major societal issues and build trust in the world | Business Consulting and Services | 🇳🇱 Amsterdam | 3,568 | 1800 |
| 7 | [HSO](https://www.tamtam.ai/c/hso) (hso.com)<br>This company helps businesses modernize operations, implement intelligent automation, and connect the enterprise through Microsoft cloud solutions and global support services | IT Services and IT Consulting | 🇳🇱 Amsterdam | 2,960 | 1987 |
| 8 | [PBH](https://www.tamtam.ai/c/pbh)<br>A leader in scaling start-ups and providing strategic industry advice, focusing on people, process, technology alignment, and promoting innovation for sustainable business transformations | Business Consulting and Services | 🇳🇱 Amsterdam | 2,538 |  |
| 9 | [JOP](https://www.tamtam.ai/c/jop) (jopnet.nl)<br>A leading organization in recruitment for government and non-profit sectors, connecting experienced professionals for temporary assignments from HBO level upwards | Government Relations Services | 🇳🇱 Amsterdam | 1,960 | 2007 |
| 10 | [IBI Group](https://www.tamtam.ai/c/ibi-group) (arcadis.com)<br>A global design firm shaping future cities with technology, sustainability, and human-centric design, now part of Arcadis, delivering innovative solutions worldwide | Design Services | 🇳🇱 Amsterdam | 1,818 |  |
| 11 | [Normec](https://www.tamtam.ai/c/normec) (normecgroup.com)<br>A leading organization in the TICC industry, specializing in testing, inspection, and certification services to support innovation and safety for clients worldwide | Business Consulting and Services | 🇳🇱 Amsterdam | 1,753 | 2016 |
| 12 | [MineSec](https://www.tamtam.ai/c/minesec) (release-engineers.com)<br>Designing and developing efficient CI/CD systems to facilitate scalable and confident solution building and deployment, allowing developers to focus on core business | IT Services and IT Consulting | 🇳🇱 Amsterdam | 1,750 | 2016 |
| 13 | [Loyens & Loeff](https://www.tamtam.ai/c/loyens-and-loeff) (loyensloeff.com)<br>Legal and tax advisory firm offering personal advice with sector expertise in the Netherlands, Belgium, Luxembourg, Switzerland, and global financial centers. | Law Practice | 🇳🇱 Amsterdam | 1,655 | 2000 |
| 14 | [YER](https://www.tamtam.ai/c/yer) (yer.nl)<br>Connecting talents, experts, and organizations, YER drives ambitions by matching them with top consultants They facilitate career growth for individuals and strategic partnerships for businesses | Staffing and Recruiting | 🇳🇱 Amsterdam | 1,638 | 1987 |
| 15 | [Maandag®](https://www.tamtam.ai/c/maandag) (maandag.com)<br>The company connects individuals with fulfilling work that matches their abilities, ambitions, and preferences in an inclusive and diverse environment, fostering passion for Mondays | Staffing and Recruiting | 🇳🇱 Amsterdam | 1,526 | 1989 |
| 16 | [Intertrust Group](https://www.tamtam.ai/c/intertrust-group) (cscglobal.com)<br>Global provider of specialized administration services with a focus on corporate, fund, capital markets, and private wealth services, supported by innovative technology and local expertise | Financial Services | 🇳🇱 Amsterdam | 1,482 | 1952 |
| 17 | [DPS Group Global](https://www.tamtam.ai/c/dps-group-global) (arcadis.com)<br>Global consulting, engineering, and construction management firm specializing in providing innovative solutions to high-tech industries worldwide | Architecture and Planning | 🇳🇱 Amsterdam | 1,391 | 1974 |
| 18 | [DPA Professionals](https://www.tamtam.ai/c/dpa-professionals) (dpa.nl)<br>Connecting specialized professionals with leading companies from multinationals to government, fostering continuous and sustainable growth through secondment, applied consultancy, recruitment, and selection. | Staffing and Recruiting | 🇳🇱 Amsterdam | 1,200 | 1990 |
| 19 | [Accenture the Netherlands](https://www.tamtam.ai/c/accenture-the-netherlands) (accenture.com)<br>Global professional services company specializing in digital, cloud, and security solutions for clients in 40+ industries worldwide, powered by Advanced Technology and Intelligent Operations | Business Consulting and Services | 🇳🇱 Amsterdam | 1,078 | 2001 |
| 20 | [Taylor Wessing Benelux](https://www.tamtam.ai/c/taylor-wessing-benelux) (taylorwessing.com)<br>Global law firm providing innovative solutions to complex problems, enabling ideas to thrive and creating extraordinary results for clients worldwide | Law Practice | 🇳🇱 Amsterdam | 1,045 | 2015 |
| 21 | [TMI Interim](https://www.tamtam.ai/c/tmi-interim) (tmi.nl)<br>An Amsterdam based deployment agency specializing in healthcare, offering various contracts and executive search services in nursing, paramedics, and medical specialist sectors Expanding internationally since 2001 | Hospitals and Health Care | 🇳🇱 Amsterdam | 1,024 | 2001 |
| 22 | [de Jong & Laan](https://www.tamtam.ai/c/de-jong-and-laan) (jonglaan.nl)<br>Specialists in assisting individuals and SMEs with incorporation, tax, social security, residency, immigration, and asset management in the Netherlands | Business Consulting and Services | 🇳🇱 Amsterdam | 974 | 1988 |
| 23 | [AKD](https://www.tamtam.ai/c/akd) (akd.eu)<br>Delivers high-quality legal services and handles tax matters across nearly all legal fields in the Benelux region, involved in high-profile cases. | Law Practice | 🇳🇱 Amsterdam | 919 | 1917 |
| 24 | [De Brauw Blackstone Westbroek](https://www.tamtam.ai/c/de-brauw-blackstone-westbroek) (debrauw.com)<br>The company delivers high-quality legal services globally, specializing in corporate law, litigation, arbitration, and compliance, with a focus on multidisciplinary, cross-border matters | Law Practice | 🇳🇱 Amsterdam | 878 | 1871 |
| 25 | [NautaDutilh](https://www.tamtam.ai/c/nautadutilh) (nautadutilh.com)<br>A leading international law firm with 400 lawyers, notaries, and tax advisers across various offices, known for adaptive thinking and problem-solving for clients | Law Practice | 🇳🇱 Amsterdam | 787 |  |
| 26 | [GGZ](https://www.tamtam.ai/c/ggz) (ggz.nl)<br>GGZ is a consultancy for healthcare leaders and entrepreneurs, providing expertise in mental health through a team of advisors, therapists, and researchers | Mental Health Care | 🇳🇱 Amsterdam | 758 | 2011 |
| 27 | [Yacht](https://www.tamtam.ai/c/yacht) (randstadprofessional.nl)<br>Yacht connects skilled professionals with leading clients, specializing in eight fields like IT, Finance, and HR, to drive optimal results and organizational improvement | Staffing and Recruiting | 🇳🇱 Amsterdam | 660 | 2000 |
| 28 | [Houthoff](https://www.tamtam.ai/c/houthoff) (houthoff.com)<br>An independent full-service Dutch law firm, focused on client trust, community involvement, employee success, diversity, and global service network | Law Practice | 🇳🇱 Amsterdam | 655 |  |
| 29 | [ACT Group](https://www.tamtam.ai/c/act-group-amsterdam) (actgroup.com)<br>Provides expert environmental solutions enabling organizations to measure, reduce, monitor, and disclose carbon footprints while ensuring regulatory compliance worldwide. | Environmental Services | 🇳🇱 Amsterdam | 619 | 2009 |
| 30 | [Arcwide](https://www.tamtam.ai/c/arcwide) (arcwide.com)<br>Arcwide combines management consulting and IFS application deployment for clients, supporting various industries with end-to-end digital consulting solutions and maximizing the IFS Cloud platform's potential | IT Services and IT Consulting | 🇳🇱 Amsterdam | 593 | 2022 |

## 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 Amsterdam

- [The largest companies in Amsterdam](https://www.tamtam.ai/l/largest-companies-amsterdam) (1,907)
- [Multinational companies in Amsterdam](https://www.tamtam.ai/l/multinational-companies-amsterdam) (561)
- [SaaS companies in Amsterdam](https://www.tamtam.ai/l/saas-companies-amsterdam) (254)
- [Software Development companies in Amsterdam](https://www.tamtam.ai/l/software-development-companies-amsterdam) (192)
- [Retail chains in Amsterdam](https://www.tamtam.ai/l/retail-chains-amsterdam) (185)
- [Financial services firms in Amsterdam](https://www.tamtam.ai/l/financial-services-firms-amsterdam) (150)
- [Financial Services companies in Amsterdam](https://www.tamtam.ai/l/financial-services-companies-amsterdam) (149)
- [IT Services and IT Consulting companies in Amsterdam](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-amsterdam) (140)
- [Companies with in-house R&D in Amsterdam](https://www.tamtam.ai/l/r-and-d-companies-amsterdam) (129)
- [Hotel and hospitality groups in Amsterdam](https://www.tamtam.ai/l/hospitality-groups-amsterdam) (124)
- [Consulting firms in Amsterdam](https://www.tamtam.ai/l/consulting-firms-amsterdam) (116)
- [IT services companies in Amsterdam](https://www.tamtam.ai/l/it-services-companies-amsterdam) (112)
- [Companies with a mobile app in Amsterdam](https://www.tamtam.ai/l/companies-with-mobile-app-amsterdam) (106)
- [AI companies in Amsterdam](https://www.tamtam.ai/l/ai-companies-amsterdam) (93)
- [Retail Apparel and Fashion companies in Amsterdam](https://www.tamtam.ai/l/retail-apparel-and-fashion-companies-amsterdam) (90)
- [E-commerce companies in Amsterdam](https://www.tamtam.ai/l/ecommerce-companies-amsterdam) (83)
- [Subscription businesses in Amsterdam](https://www.tamtam.ai/l/subscription-businesses-amsterdam) (82)
- [Hospitality companies in Amsterdam](https://www.tamtam.ai/l/hospitality-companies-amsterdam) (81)
- [Technology, Information and Internet companies in Amsterdam](https://www.tamtam.ai/l/technology-information-and-internet-companies-amsterdam) (77)
- [Critical infrastructure operators in Amsterdam](https://www.tamtam.ai/l/critical-infrastructure-operators-amsterdam) (75)
- [AI-native companies in Amsterdam](https://www.tamtam.ai/l/ai-native-companies-amsterdam) (66)
- [Business Consulting and Services companies in Amsterdam](https://www.tamtam.ai/l/business-consulting-and-services-companies-amsterdam) (65)
- [Restaurants companies in Amsterdam](https://www.tamtam.ai/l/restaurants-companies-amsterdam) (61)
- [Manufacturers in Amsterdam](https://www.tamtam.ai/l/manufacturers-amsterdam) (59)

## The same list elsewhere in Netherlands

- [Professional services firms in the Netherlands](https://www.tamtam.ai/l/professional-services-firms-netherlands) (739)
- [Professional services firms in North Holland](https://www.tamtam.ai/l/professional-services-firms-north-holland) (207)
- [Professional services firms in South Holland](https://www.tamtam.ai/l/professional-services-firms-south-holland) (145)
- [Professional services firms in North Brabant](https://www.tamtam.ai/l/professional-services-firms-north-brabant) (106)
- [Professional services firms in Gelderland](https://www.tamtam.ai/l/professional-services-firms-gelderland) (44)
- [Professional services firms in Overijssel](https://www.tamtam.ai/l/professional-services-firms-overijssel) (34)
- [Professional services firms in Utrecht](https://www.tamtam.ai/l/professional-services-firms-utrecht) (80)
- [Professional services firms in Rotterdam](https://www.tamtam.ai/l/professional-services-firms-rotterdam) (61)
- [Professional services firms in Eindhoven](https://www.tamtam.ai/l/professional-services-firms-eindhoven) (26)

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