This selection of professional services firms in Düsseldorf features mostly large and mid-sized companies, with a strong presence in business consulting, legal services, and human resources. Grant Thornton Germany is an audit firm, DIS AG provides personnel services, and Baker Tilly Germany offers global consulting. HEUKING is a business law firm, while Schüßler-Plan specializes in engineering services and TAKENAKA EUROPE in construction.
A notable pattern is the concentration of companies founded in the late 1960s and 1970s, indicating a period of significant growth for professional services in the region. Many of these firms, like Grant Thornton Germany and Schüßler-Plan, have a substantial number of employees, demonstrating their established presence and capacity.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Grant Thornton Germanygrantthornton.de
A leading audit firm in Germany with 1,500 employees across 11 locations, helping clients achieve their goals through professional services |
1,493 | |||
| 2 |
DIS AGdis-ag.com
Industry-leading personnel service provider focusing on matching skilled professionals with new career opportunities, setting high standards in HR innovation and diversity |
1,395 | |||
| 3 |
Baker Tilly Germanybakertilly.de
A global consulting firm offering personalized services in Audit & Advisory, Tax, Legal, and Consulting with interdisciplinary teams and industry expertise |
916 | |||
| 4 |
HEUKINGheuking.de
A leading German business law firm with over 400 legal professionals offering comprehensive legal advice to a range of clients |
744 | |||
| 5 |
Schüßler-Planschuessler-plan.de
With over 1000 experts at 22 locations, this leading German engineering company specializes in transportation infrastructure planning, building design, and project management services |
633 | |||
| 6 |
TAKENAKA EUROPEtakenaka.eu
A family-owned company with over 400 years of experience in architecture, engineering, and construction, specializing in future-oriented industrial and residential properties in Europe |
440 | |||
| 7 |
Cassini Consulting AGcassini.de
Innovative management and technology consulting firm challenging conventions, leading clients forward with a focus on digitalization, disruption, knowledge advancement, and industry leadership |
440 | |||
| 8 |
Taylor Wessing Germanytaylorwessing.com
A leading international law firm with over 1,100 lawyers providing high-quality legal consultancy services in various practice areas across Europe and Asia |
421 | |||
| 9 |
von Rundstedtrundstedt.de
Specializes in workforce transformation through strategic planning, skill matching, employee redeployment, and managing staff restructuring and downsizing projects efficiently. |
377 | |||
| 10 |
HPP Architekten GmbHhpp.com
A leading architectural partnership offering a full range of services, with a global team of 530 specialists and 13 offices worldwide Specializing in innovative and timeless design |
365 | |||
| 11 |
euro engineering AGee-ag.com
A leading engineering service provider in Germany with over 2,100 employees offering support in product development across various industries |
357 | |||
| 12 |
Vössing Ingenieurgesellschaft mbHvoessing.de
A leading consulting firm in Germany specializing in construction and transportation engineering services, offering a wide range of expertise and full-service solutions globally |
338 | |||
| 13 | 
RSM Germanywonderlink.de
A top ten independent auditing and consulting firm in Germany, part of a global network of experienced experts through RSM International |
309 | |||
| 14 |
Mines and Metals Engineering GmbHmme-co.de
Specializing in turnkey engineering projects for mining and metal industries worldwide, offering consultancy, technical support, and own DRI technology for iron and steel production plants |
301 | |||
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| 15 |
Horn & Companyhorn-company.com
Top-level management consulting firm specializing in P&L-oriented performance improvement and digital transformation, managed by experienced partners from large consulting companies Awarded "Hidden Champions of the Consulting Market" |
249 | |||
| 16 |
Adecco Business Solutionsabs-group.de
Full-service outsourcing partner in Germany, managing complex tasks in technical services, logistics, business process outsourcing, and sales marketing. |
185 | |||
| 17 |
hhff® by headhunting for fashionheadhuntingforfashion.de
Leading headhunting agency specializing in fashion and lifestyle sectors, connecting top talent with international players for career development and client success |
120 | |||
| 18 |
Havas Germanyde.havas.com
This company uses creativity to make a genuine difference in marketing and communication, focusing on integrated solutions and effective brand experiences |
98 | |||
| 19 |
FRTG Groupfrtg-group.de
A group of six accounting and tax consulting firms offering a comprehensive range of services including auditing, tax advice, legal advice, and business consulting |
64 | |||
| 20 |
AENGEVELT Immobilienaengevelt.com
Established in 1910, this independent, family-owned real estate company offers comprehensive services in Germany and globally, prioritizing partnership, professionalism, and market-oriented expertise |
59 | |||
| 21 |
Future Marketingfmmc.com
FM Consulting specializes in building future-proof, data-driven marketing strategies and providing transformation consulting services for DAX, MDAX, and mid-sized companies |
56 | |||
| 22 |
KIB GROUPkib-group.de
Dynamic international management consulting firm offering strategy, operations, restructuring, and digital transformation services to companies of all sizes worldwide |
35 | |||
| 23 |
Longial GmbH - Die Pensionsberaterlongial.de
Longial is a pensions advisor for medium-sized companies in Germany, offering comprehensive services from setting up pension plans to administrative support |
34 | |||
| 24 |
Go-on Group Business Developmentgo-on-group.com
Established in 1997, Go-on Group operates internationally, offering solutions to customer challenges and serving as a gateway to various markets |
32 | |||
| 25 |
Penner + Partner mbBpennerundpartner.de
A partner-managed audit firm specializing in serving national and international mid-sized companies with a focus on current expertise and excellent service |
22 | |||
| 26 |
HENDRICKS, ROST & CIE. GmbHhrcie.com
Experts in Business Intelligence and process consulting, specializing in improving decision-making and business control through innovative technology solutions and tailored strategies for efficiency and effectiveness |
13 | |||
| 27 |
sales-genetics GmbH & Co. KGsales-genetics.com
Sales consultancy providing real-time AI sales coaching integrated into Salesforce, along with flexible sales methodology and competency assessments for individual skill development |
8 | |||
| 28 |
Lanewaylaneway.de
Laneway acts as a bridge between highly qualified candidates and selected client companies, specializing in direct permanent placements in various fields |
5 | |||
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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.
More company lists in Düsseldorf
- The largest companies in Düsseldorf 347
- Multinational companies in Düsseldorf 132
- Financial services firms in Düsseldorf 41
- Retail chains in Düsseldorf 37
- Critical infrastructure operators in Düsseldorf 32
- Companies with in-house R&D in Düsseldorf 30
- Software Development companies in Düsseldorf 29
- Companies with a mobile app in Düsseldorf 25
The same list elsewhere in Germany
- Professional services firms in Germany 690
- Professional services firms in Bavaria 154
- Professional services firms in North Rhine-Westphalia 147
- Professional services firms in Baden-Württemberg 90
- Professional services firms in Hesse 88
- Professional services firms in Munich 91
- Professional services firms in Berlin 78
- Professional services firms in Hamburg 58
- Professional services firms in Frankfurt 36
- Professional services firms in Cologne 30
- Professional services firms in Stuttgart 25