# The 30 largest consulting firms in the Gironde department
Tamtam tracks 82 consulting firms headquartered in the Gironde department. This list ranks the 30 largest by number of employees on LinkedIn, led by RETRAITE compl猫te, SERMA Group and CF - Compagnie Fiduciaire. Their median headcount is 100. Half of them were founded in 2011 or later. The most common headquarters are Bordeaux (16), Pessac (4) and Le Haillan (3).
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 compl猫te offers retirement transition services. EXTENCIA is an independent accounting firm with specialized sector support.
馃嚝馃嚪 Gironde 路 30 companies 路 Updated Nov 12, 2026
| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [RETRAITE compl猫te](https://www.tamtam.ai/c/retraite-complete) (retraite-complete.com)
The company provides consulting services to help individuals smoothly transition into retirement, anticipate their financial needs, and navigate post-career opportunities | Business Consulting and Services | 馃嚝馃嚪 Eysines | 1,569 | |
| 2 | [SERMA Group](https://www.tamtam.ai/c/serma-group) (serma.com)
An independent, international platform specializing in electronics solutions and services for high-stress environments, offering expertise in 5 core business lines | Business Consulting and Services | 馃嚝馃嚪 Pessac | 1,268 | 1991 |
| 3 | [CF - Compagnie Fiduciaire](https://www.tamtam.ai/c/cf-compagnie-fiduciaire) (compagnie-fiduciaire.com)
Provides accounting, auditing, and consulting services with a strong regional presence and over 600 professionals across multiple French regions. | Business Consulting and Services | 馃嚝馃嚪 Bordeaux | 728 | 1980 |
| 4 | [Heliaq Solutions](https://www.tamtam.ai/c/heliaq-solutions) (kct.fr)
Provision of IT infrastructure, integration, consulting, managed services, and customizable hybrid cloud solutions for businesses and public organizations. | IT Services and IT Consulting | 馃嚝馃嚪 Le Haillan | 495 | 1998 |
| 5 | [CIS](https://www.tamtam.ai/c/cis-le-haillan) (cisclaims.com)
The company assists clients in defining IT system architecture, integrating infrastructure, and providing operational support to ensure smooth functioning | IT Services and IT Consulting | 馃嚝馃嚪 Le Haillan | 318 | 1986 |
| 6 | [EXTENCIA \| Cabinet d'expertise comptable](https://www.tamtam.ai/c/extencia-cabinet-d-expertise-comptable) (extencia.fr)
Independent accounting firm providing advisory, legal, tax, HR, and marketing support across specialized sectors like pharmacy, real estate, and construction for businesses. | Accounting | 馃嚝馃嚪 Bordeaux | 272 | |
| 7 | [SERMA Safety and Security](https://www.tamtam.ai/c/serma-safety-and-security) (serma-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. | Computer and Network Security | 馃嚝馃嚪 Pessac | 227 | 2016 |
| 8 | [GCL - l'innovation dans l'accompagnement des entreprises](https://www.tamtam.ai/c/gcl-l-innovation-dans-l-accompagnement-des-entreprises) (gclnet.fr)
National network providing accounting, audit, legal, payroll, and HR expertise to support SMEs throughout all business lifecycle stages. | Business Consulting and Services | 馃嚝馃嚪 Bordeaux | 227 | 1980 |
| 9 | [SERMA Technologies](https://www.tamtam.ai/c/serma-technologies) (serma-technologies.com)
Specialist in analysis, control, and expertise of electronic components, boards, and systems with extensive testing laboratory resources. | Business Consulting and Services | 馃嚝馃嚪 Pessac | 220 | 1991 |
| 10 | [Alltech Consulting](https://www.tamtam.ai/c/alltech-consulting) (alltechconsulting.fr)
Growing organization with dynamic technical teams across multiple cities, focusing on employee growth, tailored development, and collaborative career building. | IT Services and IT Consulting | 馃嚝馃嚪 Bordeaux | 160 | 2015 |
| 11 | [AQUITEM](https://www.tamtam.ai/c/aquitem) (groupe-aquitem.fr)
A team of 130 professionals specializing in direct marketing, databases, networks, security, internet, and IT management, providing comprehensive IT solutions and support | IT Services and IT Consulting | 馃嚝馃嚪 Le Bouscat | 111 | 1987 |
| 12 | [Apave International Group](https://www.tamtam.ai/c/apave-international-group) (apave-international.com)
With 150 years of experience in France, Apave expanded globally in 2010 to provide reliable services through an Integrated Management System | International Trade & Development | 馃嚝馃嚪 Artigues-pr猫s-Bordeaux | 108 | 1867 |
| 13 | [NEOSYS](https://www.tamtam.ai/c/neosys) (neosys.fr)
Provides digital transformation consulting, training, software integration, and custom IT solutions for businesses in Europe and North Africa. | IT Services and IT Consulting | 馃嚝馃嚪 Bordeaux | 103 | 2012 |
| 14 | [umake](https://www.tamtam.ai/c/umake) (umake.fr)
Engineering consulting firm supporting those shaping the world of tomorrow through IT & Digital, Telecom, and Smart Industry projects, emphasizing human adventure | IT Services and IT Consulting | 馃嚝馃嚪 Bordeaux | 103 | 2021 |
| 15 | [Th茅lio](https://www.tamtam.ai/c/thelio) (thelio.fr)
Data consulting and integration firm focused on making data accessible to all businesses, driving performance, innovation, and humanity through data intelligence | Business Consulting and Services | 馃嚝馃嚪 Bordeaux | 100 | 2011 |
| 16 | [Restauration H么tellerie Loisirs - Bordeaux-Aquitaine](https://www.tamtam.ai/c/restauration-hotellerie-loisirs-bordeaux-aquitaine)
The company offers specialized management services to independent hospitality and leisure organizations, focusing on improving results, developing activities, and optimizing performance | Business Consulting and Services | 馃嚝馃嚪 Bordeaux | 95 | 2014 |
| 17 | [BeTomorrow](https://www.tamtam.ai/c/betomorrow) (betomorrow.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 | Software Development | 馃嚝馃嚪 Bordeaux | 74 | 2002 |
| 18 | [Lor茅](https://www.tamtam.ai/c/lore) (lore.fr)
Providing innovative software and expert tax and investment advice, merging financial consulting with technology for real estate businesses. | Software Development | 馃嚝馃嚪 Bordeaux | 73 | 2009 |
| 19 | [SERMA Energy](https://www.tamtam.ai/c/serma-energy) (serma-energy.com)
Offers consulting, expertise, and testing for energy, supporting clients throughout the value chain with resources for current and future standard technologies. | Business Consulting and Services | 馃嚝馃嚪 Pessac | 63 | 2018 |
| 20 | [WeVii](https://www.tamtam.ai/c/wevii) (wevii.net)
A digital services company focusing on innovative management, personalized career development, and customer satisfaction, with plans to expand nationwide | IT Services and IT Consulting | 馃嚝馃嚪 Bordeaux | 62 | 2019 |
| 21 | [SOCAMA INGENIERIE](https://www.tamtam.ai/c/socama-ingenierie) (socama.fr)
Providing technical and objective engineering solutions for hydraulic, urban, environmental, and water cycle projects to support client success. | Environmental Services | 馃嚝馃嚪 Le Haillan | 58 | |
| 22 | [IDAIA](https://www.tamtam.ai/c/idaia) (idaia.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 | IT Services and IT Consulting | 馃嚝馃嚪 Bruges | 52 | 1988 |
| 23 | [Rubbees](https://www.tamtam.ai/c/rubbees) (rubbees.com)
A collective of independent consultants in the south-west of France providing expertise to businesses through individual and group missions | Business Consulting and Services | 馃嚝馃嚪 Bordeaux | 49 | 2019 |
| 24 | [CATIE (Centre Aquitain des Technologies de l'Information et 脡lectroniques)](https://www.tamtam.ai/c/catie-centre-aquitain-des-technologies-de-l-information-et-electroniques) (catie.fr)
A technological transfer center focused on supporting companies in adopting digital technologies through research programs and technological platforms | IT Services and IT Consulting | 馃嚝馃嚪 Talence | 48 | 2014 |
| 25 | [CONCRET](https://www.tamtam.ai/c/concret) (concret.fr)
Strategic consulting firm specialized in digital transformation, supply chain, industrial management, customer relations, change management, quality management, and certification Partnered with IFS | Business Consulting and Services | 馃嚝馃嚪 M茅rignac | 44 | 1998 |
| 26 | [LOOM CONSULTING](https://www.tamtam.ai/c/loom-consulting) (weareloom.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 | IT Services and IT Consulting | 馃嚝馃嚪 Bordeaux | 42 | 2018 |
| 27 | [FINALLI](https://www.tamtam.ai/c/finalli) (finalli.com)
Platform providing startups and SMEs with tools to self-assess eligibility for research and innovation tax credits and subsidies. | Software Development | 馃嚝馃嚪 Bordeaux | 38 | 2016 |
| 28 | [ALTO STEP](https://www.tamtam.ai/c/alto-step) (altostep.eu)
ALTO STEP is an urban planning consultancy specializing in sustainable development, climate resilience, participatory approaches, and infrastructure design for livable, inclusive cities | Architecture and Planning | 馃嚝馃嚪 Bordeaux | 38 | 2008 |
| 29 | [Inflexsys](https://www.tamtam.ai/c/inflexsys) (inflexsys.com)
Develops and integrates custom IT solutions, assisting businesses with digital transformation through expert delegation, project management, and integrating existing technological components. | IT Services and IT Consulting | 馃嚝馃嚪 M茅rignac | 36 | 2011 |
| 30 | [La Direction](https://www.tamtam.ai/c/la-direction) (ladirection.io)
A financial consulting firm providing outsourced CFO services to innovative companies and transaction services to VC investors Helping organizations improve performance and growth | Financial Services | 馃嚝馃嚪 Bordeaux | 30 | 2020 |
## 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 the Gironde department
- [The largest companies in the Gironde department](https://www.tamtam.ai/l/largest-companies-gironde) (2,435)
- [Companies with in-house R&D in the Gironde department](https://www.tamtam.ai/l/r-and-d-companies-gironde) (225)
- [Retail chains in the Gironde department](https://www.tamtam.ai/l/retail-chains-gironde) (217)
- [Multinational companies in the Gironde department](https://www.tamtam.ai/l/multinational-companies-gironde) (200)
- [Professional services firms in the Gironde department](https://www.tamtam.ai/l/professional-services-firms-gironde) (151)
- [SaaS companies in the Gironde department](https://www.tamtam.ai/l/saas-companies-gironde) (141)
- [Manufacturers in the Gironde department](https://www.tamtam.ai/l/manufacturers-gironde) (137)
- [Software Development companies in the Gironde department](https://www.tamtam.ai/l/software-development-companies-gironde) (124)
- [Distributors and wholesalers in the Gironde department](https://www.tamtam.ai/l/distributors-and-wholesalers-gironde) (115)
- [Public sector organisations in the Gironde department](https://www.tamtam.ai/l/public-sector-organisations-gironde) (109)
- [IT Services and IT Consulting companies in the Gironde department](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-gironde) (105)
- [Family-owned companies in the Gironde department](https://www.tamtam.ai/l/family-owned-companies-gironde) (104)
- [Hardware manufacturers in the Gironde department](https://www.tamtam.ai/l/hardware-companies-gironde) (100)
- [IT services companies in the Gironde department](https://www.tamtam.ai/l/it-services-companies-gironde) (99)
- [Law Practice companies in the Gironde department](https://www.tamtam.ai/l/law-practice-companies-gironde) (81)
- [Education providers in the Gironde department](https://www.tamtam.ai/l/education-companies-gironde) (80)
- [Financial services firms in the Gironde department](https://www.tamtam.ai/l/financial-services-firms-gironde) (80)
- [Real Estate companies in the Gironde department](https://www.tamtam.ai/l/real-estate-companies-gironde) (79)
- [Business Consulting and Services companies in the Gironde department](https://www.tamtam.ai/l/business-consulting-and-services-companies-gironde) (77)
- [Retail companies in the Gironde department](https://www.tamtam.ai/l/retail-companies-gironde) (74)
- [Healthcare providers in the Gironde department](https://www.tamtam.ai/l/healthcare-providers-gironde) (71)
- [Construction companies in the Gironde department](https://www.tamtam.ai/l/construction-companies-gironde) (67)
- [Higher Education companies in the Gironde department](https://www.tamtam.ai/l/higher-education-companies-gironde) (67)
- [Advertising Services companies in the Gironde department](https://www.tamtam.ai/l/advertising-services-companies-gironde) (65)
## The same list elsewhere in France
- [Consulting firms in France](https://www.tamtam.ai/l/consulting-firms-france) (4,251)
- [Consulting firms in 脦le-de-France](https://www.tamtam.ai/l/consulting-firms-ile-de-france) (2,408)
- [Consulting firms in the Hauts-de-Seine department](https://www.tamtam.ai/l/consulting-firms-hauts-de-seine) (563)
- [Consulting firms in Auvergne-Rh么ne-Alpes](https://www.tamtam.ai/l/consulting-firms-auvergne-rhone-alpes) (412)
- [Consulting firms in the Rh么ne department](https://www.tamtam.ai/l/consulting-firms-rhone) (242)
- [Consulting firms in Occitanie](https://www.tamtam.ai/l/consulting-firms-occitanie) (236)
- [Consulting firms in Provence-Alpes-C么te d'Azur](https://www.tamtam.ai/l/consulting-firms-provence-alpes-cote-dazur) (233)
- [Consulting firms in Nouvelle-Aquitaine](https://www.tamtam.ai/l/consulting-firms-nouvelle-aquitaine) (166)
- [Consulting firms in Grand Est](https://www.tamtam.ai/l/consulting-firms-grand-est) (165)
- [Consulting firms in Hauts-de-France](https://www.tamtam.ai/l/consulting-firms-hauts-de-france) (161)
- [Consulting firms in Pays de la Loire](https://www.tamtam.ai/l/consulting-firms-pays-de-la-loire) (160)
- [Consulting firms in the Haute-Garonne department](https://www.tamtam.ai/l/consulting-firms-haute-garonne) (145)
- [Consulting firms in the Bouches-du-Rh么ne department](https://www.tamtam.ai/l/consulting-firms-bouches-du-rhone) (129)
- [Consulting firms in the Nord department](https://www.tamtam.ai/l/consulting-firms-nord) (115)
- [Consulting firms in Brittany](https://www.tamtam.ai/l/consulting-firms-brittany) (99)
- [Consulting firms in the Loire-Atlantique department](https://www.tamtam.ai/l/consulting-firms-loire-atlantique) (94)
- [Consulting firms in the Yvelines department](https://www.tamtam.ai/l/consulting-firms-yvelines) (72)
- [Consulting firms in the Is猫re department](https://www.tamtam.ai/l/consulting-firms-isere) (57)
- [Consulting firms in Paris](https://www.tamtam.ai/l/consulting-firms-paris) (1,532)
- [Consulting firms in Lyon](https://www.tamtam.ai/l/consulting-firms-lyon) (163)
- [Consulting firms in Toulouse](https://www.tamtam.ai/l/consulting-firms-toulouse) (98)
- [Consulting firms in Boulogne-Billancourt](https://www.tamtam.ai/l/consulting-firms-boulogne-billancourt) (88)
- [Consulting firms in Levallois-Perret](https://www.tamtam.ai/l/consulting-firms-levallois-perret) (83)
- [Consulting firms in Neuilly-sur-Seine](https://www.tamtam.ai/l/consulting-firms-neuilly-sur-seine) (73)
## The same list elsewhere
- [Consulting firms in the world](https://www.tamtam.ai/l/consulting-firms-in-the-world) (16,009)
- [Consulting firms in Europe](https://www.tamtam.ai/l/consulting-firms-in-europe) (8,900)
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Source: https://www.tamtam.ai/l/consulting-firms-gironde