These are large and mid-sized professional services firms headquartered in North Rhine-Westphalia, active in IT, engineering, consulting, and human resources. adesso SE, based in Dortmund, is an IT service provider optimizing business processes. FERCHAU, from Gummersbach, specializes in technology services. Formel D Group, headquartered in Cologne, provides automotive services, while Grant Thornton Germany in Düsseldorf offers audit and professional services.
The companies on this list, many founded in the 1990s, show a strong concentration in the cities of Cologne and Düsseldorf. Other notable firms include FEV Europe GmbH in Aachen, which develops vehicle and powertrain solutions, and DIS AG in Düsseldorf, a personnel service provider. The range of services indicates a robust and diversified professional services sector across the region.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 | 6,389 | ||||
| 2 |
FERCHAUferchau.com
Leading European platform for top technology services, specializing in developing future-centric solutions across various technical sectors with bright minds |
4,019 | |||
| 3 |
Formel D Groupformeld.com
Global automotive service provider offering market leading concepts and scalable solutions across the automotive value chain, from development to aftersales service Passion, professionalism, team spirit |
3,726 | |||
| 4 |
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 | |||
| 5 |
FEV Europe GmbHfev.com
Develops vehicle, powertrain hardware, software solutions, from design, testing to production, including consulting. Specializes in electrification, alternative fuels, and automated driving. |
1,400 | |||
| 6 |
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 | |||
| 7 |
umlaut companyaccenture.com
Global professional services company specializing in digital transformation, technology, consulting, operations, and industry solutions for diverse clients worldwide. |
1,249 | |||
| 8 |
zeb consultingzeb-consulting.com
Leading strategy, management, and IT consultancy in financial services across Europe, offering transformation expertise, proprietary software, and long-lasting business solutions |
1,195 | |||
| 9 | 1,148 | ||||
| 10 |
TEMPTON Grouptempton.de
The TEMPTON Group provides high-quality solutions for diverse HR challenges, offering new perspectives for businesses and development opportunities for individuals |
1,017 | |||
| 11 |
TÜV Rheinland Asiatuv.com
A global leader providing technical services focused on safety and quality, with nearly 20,000 employees and annual revenues close to €2 billion |
1,015 | |||
| 12 |
Luther Rechtsanwaltsgesellschaft mbHluther-lawfirm.com
Provides comprehensive legal and tax services to medium-sized enterprises, large corporations, and public sector clients across Europe and Asia. |
963 | |||
| 13 |
TIMETOACT GROUPtimetoact-group.com
The company specializes in modernizing and integrating IT applications for businesses, while also designing and implementing digital business models for innovative clients |
952 | |||
| 14 |
Detecondetecon.com
Leading consulting partner specializing in digital transformation, connectivity, and communications to implement innovative business models for enhanced customer experiences and employee satisfaction. |
950 | |||
| 15 |
BCG Platinionbcgplatinion.com
Global interdisciplinary consultancy delivering large-scale technology projects, platform architecture, and cybersecurity solutions to accelerate digital transformations and drive innovation for diverse clients. |
945 | |||
| 16 |
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 | |||
| 17 |
BAD GmbHbad-gmbh.de
The company provides prevention services to 280,000 businesses and 4 million employees in Germany and Europe, covering areas such as occupational safety, health, and security |
847 | |||
| 18 |
Inverto | A BCG Companyinverto.com
An international management consultancy specializing in strategic procurement and supply chain management, helping clients reduce costs, optimize processes, and digitize procurement |
838 | |||
| 19 |
Convistaconvista.com
A consultancy specializing in transformation, helping clients design and implement new business processes and end-to-end SAP and IT solutions |
825 | |||
| 20 |
NTT DATA Business Solutions Germanynttdata-solutions.com
Providing expert implementation and management of SAP solutions for companies worldwide to drive digital transformation and maximize business potential |
818 | |||
| 21 |
DMT GROUPdmt-group.com
A global engineering services and consulting company specializing in plant engineering, infrastructure, natural resources, and energy, creating sustainable value for clients worldwide |
810 | |||
| 22 |
HEUKINGheuking.de
A leading German business law firm with over 400 legal professionals offering comprehensive legal advice to a range of clients |
744 | |||
| 23 |
Flick Gocke Schaumburgfgs.de
Specializing in tax-focused legal advice, the team of lawyers, tax advisors, and auditors provide interdisciplinary services to a diverse client base |
735 | |||
| 24 |
Projektträger Jülich, Forschungszentrum Jülich GmbHptj.de
As a leading project sponsor in Germany, we support public and private entities in research and innovation management, focusing on funding programs and developing a competitive research and innovation landscape |
703 | |||
| 25 | 694 | ||||
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 |
Bilfinger Region DACHbilfinger.com
The company is a market leader in industrial services, part of a global group, specializing in planning and monitoring facilities in process industries |
692 | |||
| 27 | 685 | ||||
| 28 |
P3 Group
This company has been rebranded as umlaut and provides consulting services Another part focuses on a different sector |
668 | |||
| 29 |
DLR Projektträgerprojekttraeger.dlr.de
Provides comprehensive knowledge-based services for managing research, education, and innovation, including strategy advice, funding program implementation, knowledge transfer, and impact evaluation for clients. |
667 | |||
| 30 |
Kienbaumkienbaum.com
A leadership advisory and management consulting firm that brings potential to life by matching individuals and companies for a sustainable future |
650 | |||
| 31 |
Dataciders GmbHdataciders.com
A leading service provider in the German-speaking region, specializing in Data & Analytics solutions to prevent bad decisions, offering end-to-end implementation |
648 | |||
| 32 |
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 | |||
| 33 | 614 | ||||
| 34 |
itelligencenttdata-solutions.com
The company provides business solutions and services under the new brand since April 1, 2021 as part of NTT DATA |
557 | |||
| 35 |
Ecclesia Groupecclesia.com
A leading European insurance broker for corporations and institutions, offering exciting tasks, professional development, and training opportunities in various fields |
557 | |||
| 36 |
UNITY Consulting & Innovationunity-consulting.com
UNITY is a management consultancy specializing in innovation and transformation, helping global players and midsize companies master digital transformations for future success |
523 | |||
| 37 |
codecentric AGcodecentric.de
A leading custom software development company in Germany, specializing in agile methodologies and innovative technologies with a focus on future software solutions |
522 | |||
| 38 |
mindsquare AGmindsquare.de
A leading IT consulting firm specializing in SAP and Salesforce, fostering personal development and digital excellence through individual software development and technology consultancy |
507 | |||
| 39 |
Piening Personalpiening-personal.de
A leading German personnel service provider specializing in temporary employment, offering flexible solutions for clients and prioritizing employee satisfaction and development |
462 | |||
| 40 |
Qvest Globalqvest.com
A global technology consultancy specializing in digital transformation, system architecture, ICT integration, and software development for media industry innovation |
457 | |||
| 41 |
CURACON GmbHcuracon.de
Curacon provides auditing, legal, and consulting services for healthcare, social, public, and church sectors with over 2,000 clients in Germany |
449 | |||
| 42 |
RLE INTERNATIONAL Grouprle.international
A global leader in development, technology, and consultation services for international mobility industries, with over 30 years of experience and locations worldwide |
447 | |||
| 43 |
ZETCON Ingenieure GmbHzetcon.de
Planning, supervision, consulting, and management of sustainable infrastructure projects in energy, environment, transport, and urban development sectors. |
442 | |||
| 44 |
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 | |||
| 45 |
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 | |||
| 46 |
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 | |||
| 47 |
ALS Germanyalsglobal.com
An international laboratory, testing, and consulting company with 22 locations in Europe and China, focusing on quality, safety, environmental protection, and health |
418 | |||
| 48 | 410 | ||||
| 49 |
apsolut Groupap-solut.com
Specializes in SAP and SAP Ariba procurement solutions including on-premise, cloud, hybrid setups, with expertise in SAP S/4HANA and Fieldglass. |
398 | |||
| 50 |
Griesemann Gruppegriesemann.com
A strong partner in holistic industrial plant construction, offering engineering services, maintenance, and lightning protection Emphasis on teamwork and growth opportunities |
397 | |||
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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 15, 2026.
More company lists in North Rhine-Westphalia
- The largest companies in North Rhine-Westphalia 2,981
- Multinational companies in North Rhine-Westphalia 994
- Companies with in-house R&D in North Rhine-Westphalia 455
- Manufacturers in North Rhine-Westphalia 424
- Family-owned companies in North Rhine-Westphalia 335
- Retail chains in North Rhine-Westphalia 311
- Hardware manufacturers in North Rhine-Westphalia 284
- Critical infrastructure operators in North Rhine-Westphalia 272
- Transportation, Logistics, Supply Chain and Storage companies in North Rhine-Westphalia 267
- Financial services firms in North Rhine-Westphalia 238
- Software Development companies in North Rhine-Westphalia 217
- SaaS companies in North Rhine-Westphalia 201
- Corporate groups and holding companies in North Rhine-Westphalia 189
- Companies with a mobile app in North Rhine-Westphalia 175
- IT Services and IT Consulting companies in North Rhine-Westphalia 171
- Public sector organisations in North Rhine-Westphalia 160
- Logistics companies in North Rhine-Westphalia 148
- IT services companies in North Rhine-Westphalia 146
- Financial Services companies in North Rhine-Westphalia 126
- Consulting firms in North Rhine-Westphalia 112
- E-commerce companies in North Rhine-Westphalia 110
- Automotive manufacturers and suppliers in North Rhine-Westphalia 103
- Distributors and wholesalers in North Rhine-Westphalia 103
- Education providers in North Rhine-Westphalia 97
The same list elsewhere in Germany
- Professional services firms in Germany 690
- Professional services firms in Bavaria 154
- 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 Düsseldorf 28
- Professional services firms in Stuttgart 25