The Gironde department is home to a concentration of consulting firms, primarily in business, IT, and accounting services. These are mostly mid-sized firms, with several established companies founded in the 1980s and 1990s. Many of them operate beyond the local area, offering their expertise nationally or internationally.
Key players include SERMA Group, specializing in electronics solutions, and CF - Compagnie Fiduciaire, which provides accounting and auditing services. Heliaq Solutions and CIS focus on IT infrastructure and consulting, while RETRAITE complète offers retirement transition services. EXTENCIA is an independent accounting firm with specialized sector support.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
RETRAITE complèteretraite-complete.com
The company provides consulting services to help individuals smoothly transition into retirement, anticipate their financial needs, and navigate post-career opportunities |
1,569 | |||
| 2 |
SERMA Groupserma.com
An independent, international platform specializing in electronics solutions and services for high-stress environments, offering expertise in 5 core business lines |
1,268 | |||
| 3 |
CF - Compagnie Fiduciairecompagnie-fiduciaire.com
Provides accounting, auditing, and consulting services with a strong regional presence and over 600 professionals across multiple French regions. |
728 | |||
| 4 |
Heliaq Solutionskct.fr
Provision of IT infrastructure, integration, consulting, managed services, and customizable hybrid cloud solutions for businesses and public organizations. |
495 | |||
| 5 |
CIScisclaims.com
The company assists clients in defining IT system architecture, integrating infrastructure, and providing operational support to ensure smooth functioning |
318 | |||
| 6 |
EXTENCIA | Cabinet d'expertise comptableextencia.fr
Independent accounting firm providing advisory, legal, tax, HR, and marketing support across specialized sectors like pharmacy, real estate, and construction for businesses. |
272 | |||
| 7 |
SERMA Safety and Securityserma-safety-security.com
Provides expertise, evaluation, and consulting for product and system security and safety, covering cybersecurity, functional safety, and formal methods, for various industries. |
227 | |||
| 8 |
GCL - l'innovation dans l'accompagnement des entreprisesgclnet.fr
National network providing accounting, audit, legal, payroll, and HR expertise to support SMEs throughout all business lifecycle stages. |
227 | |||
| 9 |
SERMA Technologiesserma-technologies.com
Specialist in analysis, control, and expertise of electronic components, boards, and systems with extensive testing laboratory resources. |
220 | |||
| 10 |
Alltech Consultingalltechconsulting.fr
Growing organization with dynamic technical teams across multiple cities, focusing on employee growth, tailored development, and collaborative career building. |
160 | |||
| 11 |
AQUITEMgroupe-aquitem.fr
A team of 130 professionals specializing in direct marketing, databases, networks, security, internet, and IT management, providing comprehensive IT solutions and support |
111 | |||
| 12 |
Apave International Groupapave-international.com
With 150 years of experience in France, Apave expanded globally in 2010 to provide reliable services through an Integrated Management System |
108 | |||
| 13 | 103 | ||||
| 14 | 103 | ||||
| 15 | 100 | ||||
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. | |||||
| 16 |
Restauration Hôtellerie Loisirs - Bordeaux-Aquitaine
The company offers specialized management services to independent hospitality and leisure organizations, focusing on improving results, developing activities, and optimizing performance |
95 | |||
| 17 |
BeTomorrowbetomorrow.com
A tech and innovation agency with 80 digital experts, specializing in high-stakes projects to create exceptional digital solutions for leading national and international companies |
74 | |||
| 18 | 73 | ||||
| 19 |
SERMA Energyserma-energy.com
Offers consulting, expertise, and testing for energy, supporting clients throughout the value chain with resources for current and future standard technologies. |
63 | |||
| 20 | 62 | ||||
| 21 |
SOCAMA INGENIERIEsocama.fr
Providing technical and objective engineering solutions for hydraulic, urban, environmental, and water cycle projects to support client success. |
58 | |||
| 22 |
IDAIAidaia.group
With over 30 years of experience, this company specializes in marketing, communication, and digital transformation for B2B and B2C clients through a full range of services |
52 | |||
| 23 |
Rubbeesrubbees.com
A collective of independent consultants in the south-west of France providing expertise to businesses through individual and group missions |
49 | |||
| 24 |
CATIE (Centre Aquitain des Technologies de l'Information et Électroniques)catie.fr
A technological transfer center focused on supporting companies in adopting digital technologies through research programs and technological platforms |
48 | |||
| 25 |
CONCRETconcret.fr
Strategic consulting firm specialized in digital transformation, supply chain, industrial management, customer relations, change management, quality management, and certification Partnered with IFS |
44 | |||
| 26 |
LOOM CONSULTINGweareloom.fr
LOOM is a Bordeaux-based consulting company specializing in IT/Web project management, now expanding to the Parisian market with a team of 50 skilled consultants |
42 | |||
| 27 |
FINALLIfinalli.com
Platform providing startups and SMEs with tools to self-assess eligibility for research and innovation tax credits and subsidies. |
38 | |||
| 28 |
ALTO STEPaltostep.eu
ALTO STEP is an urban planning consultancy specializing in sustainable development, climate resilience, participatory approaches, and infrastructure design for livable, inclusive cities |
38 | |||
| 29 |
Inflexsysinflexsys.com
Develops and integrates custom IT solutions, assisting businesses with digital transformation through expert delegation, project management, and integrating existing technological components. |
36 | |||
| 30 |
La Directionladirection.io
A financial consulting firm providing outsourced CFO services to innovative companies and transaction services to VC investors Helping organizations improve performance and growth |
30 | |||
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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 the Gironde department
- The largest companies in the Gironde department 2,435
- Companies with in-house R&D in the Gironde department 225
- Retail chains in the Gironde department 217
- Multinational companies in the Gironde department 200
- Professional services firms in the Gironde department 151
- SaaS companies in the Gironde department 141
- Manufacturers in the Gironde department 137
- Software Development companies in the Gironde department 124
- Distributors and wholesalers in the Gironde department 115
- Public sector organisations in the Gironde department 109
- IT Services and IT Consulting companies in the Gironde department 105
- Family-owned companies in the Gironde department 104
- Hardware manufacturers in the Gironde department 100
- IT services companies in the Gironde department 99
- Law Practice companies in the Gironde department 81
- Education providers in the Gironde department 80
- Financial services firms in the Gironde department 80
- Real Estate companies in the Gironde department 79
- Business Consulting and Services companies in the Gironde department 77
- Retail companies in the Gironde department 74
- Healthcare providers in the Gironde department 71
- Construction companies in the Gironde department 67
- Higher Education companies in the Gironde department 67
- Advertising Services companies in the Gironde department 65
The same list elsewhere in France
- Consulting firms in France 4,251
- Consulting firms in Île-de-France 2,408
- Consulting firms in the Hauts-de-Seine department 563
- Consulting firms in Auvergne-Rhône-Alpes 412
- Consulting firms in the Rhône department 242
- Consulting firms in Occitanie 236
- Consulting firms in Provence-Alpes-Côte d'Azur 233
- Consulting firms in Nouvelle-Aquitaine 166
- Consulting firms in Grand Est 165
- Consulting firms in Hauts-de-France 161
- Consulting firms in Pays de la Loire 160
- Consulting firms in the Haute-Garonne department 145
- Consulting firms in the Bouches-du-Rhône department 129
- Consulting firms in the Nord department 115
- Consulting firms in Brittany 99
- Consulting firms in the Loire-Atlantique department 94
- Consulting firms in the Yvelines department 72
- Consulting firms in the Isère department 57
- Consulting firms in Paris 1,532
- Consulting firms in Lyon 163
- Consulting firms in Toulouse 98
- Consulting firms in Boulogne-Billancourt 88
- Consulting firms in Levallois-Perret 83
- Consulting firms in Neuilly-sur-Seine 73