# List of professional services firms in Stuttgart
Tamtam tracks 25 professional services firms headquartered in Stuttgart. This list ranks all of them by number of employees on LinkedIn, led by DEKRA, GFT Technologies and Exyte. Their median headcount is 747. Half of them were founded in 1992 or later.
These professional services firms in Stuttgart offer a range of specialized expertise, from large-scale engineering and IT solutions to legal and management consulting. The companies listed are primarily mid-sized to large organizations. For instance, DEKRA provides expert safety services worldwide, GFT Technologies designs advanced data and AI transformation solutions, Exyte specializes in high-tech facility construction, and Drees & Sommer offers consulting for real estate and infrastructure.
A notable pattern among these firms is their strong focus on technology, digitalization, and sustainability across various sectors. Many of these companies, such as GFT Technologies, Diconium, P3, and Porsche Consulting, were founded between the mid-1980s and the mid-1990s, indicating a period of significant growth in specialized consulting and IT services in the region.
π©πͺ Stuttgart Β· 25 companies Β· Updated Nov 11, 2026
| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [DEKRA](https://www.tamtam.ai/c/dekra) (dekra.com)
DEKRA provides expert safety services worldwide, including vehicle inspection, claims services, industrial inspections, training, product certification, and sustainable solutions | Public Safety | π©πͺ Stuttgart | 49,000 | |
| 2 | [GFT Technologies](https://www.tamtam.ai/c/gft-technologies) (gft.com)
Design advanced data, AI transformation solutions, modernize tech architectures, and develop next-gen core systems for industry leaders globally. | IT Services and IT Consulting | π©πͺ Stuttgart | 13,400 | 1987 |
| 3 | [Exyte](https://www.tamtam.ai/c/exyte) (exyte.net)
A global engineering, procurement, and construction firm specializing in high-tech facilities for various industries, focusing on innovation, sustainability, and client support | Civil Engineering | π©πͺ Stuttgart | 4,994 | |
| 4 | [Drees & Sommer](https://www.tamtam.ai/c/drees-and-sommer) (dreso.com)
Provides consulting and implementation services for real estate, infrastructure, and industrial markets, focusing on sustainable, innovative, and economically viable solutions for clients. | Real Estate | π©πͺ Stuttgart | 4,784 | |
| 5 | [Diconium](https://www.tamtam.ai/c/diconium) (weare.diconium.com)
Digital transformation partner specializing in strategy, commerce platform development, and data-driven intelligence across a diverse range of industries with a global footprint | Software Development | π©πͺ Stuttgart | 2,584 | 1995 |
| 6 | [RSM Ebner Stolz](https://www.tamtam.ai/c/rsm-ebner-stolz) (ebnerstolz.de)
A leading independent auditing and consulting firm in Germany offering multidisciplinary services such as audit, tax, legal, and business consulting to mid-sized businesses | Professional Services | π©πͺ Stuttgart | 1,878 | |
| 7 | [P3](https://www.tamtam.ai/c/p3) (p3-group.com)
P3 group delivers innovative solutions to complex technology challenges for clients worldwide, ensuring tangible value through tailored implementation processes and continuous guidance | Business Consulting and Services | π©πͺ Stuttgart | 1,791 | 1996 |
| 8 | [Fichtner](https://www.tamtam.ai/c/fichtner) (fichtner.de)
The company is an independent engineering and consultancy firm specializing in energy, infrastructure, renewable energies, environmental protection, water resources, and IT consultancy worldwide | Engineering Services | π©πͺ Stuttgart | 1,612 | 1922 |
| 9 | [HorvΓ‘th](https://www.tamtam.ai/c/horvath) (horvath-partners.com)
Global management consultancy specializing in transformation, performance management, and digitalization to drive sustainable success and long-term value creation. | Business Consulting and Services | π©πͺ Stuttgart | 1,554 | 1981 |
| 10 | [Porsche Consulting](https://www.tamtam.ai/c/porsche-consulting) (porsche-consulting.com)
Consulting firm delivering strategic, pragmatic solutions to enhance competitive advantage across automotive, aerospace, engineering, life sciences, finance, retail, and construction sectors. | Business Consulting and Services | π©πͺ Stuttgart | 1,053 | 1994 |
| 11 | [Gleiss Lutz](https://www.tamtam.ai/c/gleiss-lutz) (gleisslutz.com)
A leading German law firm with 350 lawyers operates in various cities offering full-service commercial legal advice globally with efficient team structures | Law Practice | π©πͺ Stuttgart | 915 | 1949 |
| 12 | [DEKRA Germany](https://www.tamtam.ai/c/dekra-germany) (dekra.de)
DEKRA is a global expert organization focused on safety, offering independent expert services in vehicle inspections, safety consulting, product certification, and more | Public Safety | π©πͺ Stuttgart | 769 | 1925 |
| 13 | [Zoi](https://www.tamtam.ai/c/zoi-stuttgart) (zoi.tech)
A global technology company providing cloud solutions for Retail and Manufacturing industries, specializing in cloud migration, IoT, DevOps, AI, Cyber Security, and SAP transformation | IT Services and IT Consulting | π©πͺ Stuttgart | 747 | 2017 |
| 14 | [KPMG Law](https://www.tamtam.ai/c/kpmg-law) (kpmg-law.de)
A dynamic and internationally-oriented law practice offering multidisciplinary legal consulting services through a network of over 270 lawyers in Germany | Legal Services | π©πͺ Stuttgart | 635 | 2007 |
| 15 | [DEKRA Digital & Product Solutions](https://www.tamtam.ai/c/dekra-digital-and-product-solutions) (dekra.com)
The company specializes in creating intelligent testing solutions for various industries to ensure safety and security in the digitalized world | Public Safety | π©πͺ Stuttgart | 631 | 1925 |
| 16 | [DEKRA Arbeit Group Germany](https://www.tamtam.ai/c/dekra-arbeit-group-germany) (dekra-arbeit.de)
Delivers tailored staffing services, expert migration assistance, and human resources management including direct placement and executive search across twenty-four countries globally. | Staffing and Recruiting | π©πͺ Stuttgart | 524 | 1998 |
| 17 | [GTΓ Gesellschaft fΓΌr Technische Γberwachung mbH](https://www.tamtam.ai/c/gtu-gesellschaft-fur-technische-uberwachung-mbh) (gtue.de)
Germany's largest officially recognized surveillance organization for freelance automotive experts, offering alternative vehicle inspections and safety checks through over 2,500 professionals in 12,000 locations | Public Safety | π©πͺ Stuttgart | 507 | 1977 |
| 18 | [Werner Sobek](https://www.tamtam.ai/c/werner-sobek) (linktr.ee)
Global engineering and design studio with a focus on lightweight structures, sustainable building concepts, and premium design integrated with green technologies | Engineering Services | π©πͺ Stuttgart | 355 | 1992 |
| 19 | [HWS GmbH & Co. KG](https://www.tamtam.ai/c/hws-gmbh-and-co-kg) (hws.de)
A trusted partner offering top quality tax consultancy, legal advice, audits, and corporate consulting services to medium-sized enterprises, family companies, freelancers, and individuals | Accounting | π©πͺ Stuttgart | 327 | 1923 |
| 20 | [Da Vinci Engineering GmbH](https://www.tamtam.ai/c/da-vinci-engineering-gmbh) (davinci.de)
A trusted development partner in automotive engineering, providing top-class expertise and services with a focus on electrics, electronics, and software development | Engineering Services | π©πͺ Stuttgart | 219 | 2005 |
| 21 | [BANSBACH GmbH](https://www.tamtam.ai/c/bansbach-gmbh) (bansbach-gruppe.de)
The company provides auditing, tax, legal, and business consulting services, focusing on building strong client relationships to provide thorough and expert advice | Business Consulting and Services | π©πͺ Stuttgart | 212 | 1924 |
| 22 | [Auer Weber](https://www.tamtam.ai/c/auer-weber) (auer-weber.de)
Architectural firm specializing in designing new buildings and renovations for public and private clients, with a focus on international projects | Architecture and Planning | π©πͺ Stuttgart | 86 | 1980 |
| 23 | [valux AG](https://www.tamtam.ai/c/valux-ag) (valux-ag.de)
Specializing in high-quality property valuation reports for various asset classes since 2019, with expertise in tailored solutions for financial institutions, businesses, and institutional investors Operating primarily in Southern Germany but serving clients nationwide | Real Estate | π©πͺ Stuttgart | 12 | 2019 |
| 24 | [boltzplatz - numerical plasma dynamics](https://www.tamtam.ai/c/boltzplatz-numerical-plasma-dynamics) (boltzplatz.eu)
Engineering & consulting services specializing in numerical modelling & simulation for high-tech industries, focusing on rarefied gas & plasma dynamics applications | Research Services | π©πͺ Stuttgart | 4 | 2018 |
| 25 | [MAYR TEAMWORK GmbH](https://www.tamtam.ai/c/mayr-teamwork-gmbh) (mayr-teamwork.de)
Independent consulting company offering business management consulting and services in process optimization, controlling, IT, and communication through a network of specialists | Business Consulting and Services | π©πͺ Stuttgart | 2 | 2009 |
## 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 Stuttgart
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- [Multinational companies in Stuttgart](https://www.tamtam.ai/l/multinational-companies-stuttgart) (99)
- [Companies with in-house R&D in Stuttgart](https://www.tamtam.ai/l/r-and-d-companies-stuttgart) (51)
- [Software Development companies in Stuttgart](https://www.tamtam.ai/l/software-development-companies-stuttgart) (37)
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- [SaaS companies in Stuttgart](https://www.tamtam.ai/l/saas-companies-stuttgart) (33)
- [Critical infrastructure operators in Stuttgart](https://www.tamtam.ai/l/critical-infrastructure-operators-stuttgart) (28)
- [Financial Services companies in Stuttgart](https://www.tamtam.ai/l/financial-services-companies-stuttgart) (27)
- [Manufacturers in Stuttgart](https://www.tamtam.ai/l/manufacturers-stuttgart) (25)
## The same list elsewhere in Germany
- [Professional services firms in Germany](https://www.tamtam.ai/l/professional-services-firms-germany) (690)
- [Professional services firms in Bavaria](https://www.tamtam.ai/l/professional-services-firms-bavaria) (154)
- [Professional services firms in North Rhine-Westphalia](https://www.tamtam.ai/l/professional-services-firms-north-rhine-westphalia) (147)
- [Professional services firms in Baden-WΓΌrttemberg](https://www.tamtam.ai/l/professional-services-firms-baden-wurttemberg) (90)
- [Professional services firms in Hesse](https://www.tamtam.ai/l/professional-services-firms-hesse) (88)
- [Professional services firms in Munich](https://www.tamtam.ai/l/professional-services-firms-munich) (91)
- [Professional services firms in Berlin](https://www.tamtam.ai/l/professional-services-firms-berlin) (78)
- [Professional services firms in Hamburg](https://www.tamtam.ai/l/professional-services-firms-hamburg) (58)
- [Professional services firms in Frankfurt](https://www.tamtam.ai/l/professional-services-firms-frankfurt) (36)
- [Professional services firms in Cologne](https://www.tamtam.ai/l/professional-services-firms-cologne) (30)
- [Professional services firms in DΓΌsseldorf](https://www.tamtam.ai/l/professional-services-firms-dusseldorf) (28)
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Source: https://www.tamtam.ai/l/professional-services-firms-stuttgart