# List of professional services firms in the Ille-et-Vilaine department

Tamtam tracks 94 professional services firms headquartered in the Ille-et-Vilaine department. This list ranks the 30 largest by number of employees on LinkedIn, led by Groupe SAMSIC, Interaction Interim and ABER Propreté. Their median headcount is 178. Half of them were founded in 1990 or later. The most common headquarters are Rennes (14) and Cesson-Sévigné (4).

The companies in Ille-et-Vilaine predominantly operate in professional services, with a notable presence of mid-sized firms. These include a strong focus on business consulting, staffing, and IT services. Companies like Groupe SAMSIC offer facility management and HR services, while Interaction Interim specializes in temporary work and recruitment.

Other significant firms are ABER Propreté, providing industrial cleaning, RBI, focused on IT systems design and integration, and Office Notarial Anastasia Moreau, offering legal services. The data shows a concentration of headquarters in Rennes and Cesson-Sévigné, indicating these cities as key hubs for professional services in the region.

🇫🇷 Ille-et-Vilaine · 30 companies · Updated Nov 13, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Groupe SAMSIC](https://www.tamtam.ai/c/groupe-samsic) (samsic.com)<br>With over 30 years of experience, we prioritize human and professional values while offering tailored solutions in facility management and HR services | Business Consulting and Services | 🇫🇷 Cesson-Sévigné | 6,680 | 1986 |
| 2 | [Interaction Interim](https://www.tamtam.ai/c/interaction-interim) (interaction-interim.com)<br>National network providing temporary work, recruitment for fixed-term and permanent contracts, training, support, and consulting services across all business sectors. | Staffing and Recruiting | 🇫🇷 Rennes | 1,055 | 1991 |
| 3 | [ABER Propreté](https://www.tamtam.ai/c/aber-proprete) (aberproprete.fr)<br>Providing high-quality industrial cleaning and hygiene services with continuous employee training and precise service monitoring since 1975. | Environmental Services | 🇫🇷 Saint-Jacques-de-la-Lande | 682 | 1975 |
| 4 | [NET PLUS](https://www.tamtam.ai/c/net-plus) (net-plus.fr)<br>A company specializing in cleaning services, prioritizing customer satisfaction, quality interventions, and social responsibility with a focus on employee well-being and respect | Facilities Services | 🇫🇷 Cesson-Sévigné | 521 | 1990 |
| 5 | [RBI](https://www.tamtam.ai/c/rbi-rennes) (rbi-informatique.fr)<br>Specializing in information systems design, implementation, and integration, RBI-Informatique offers services in infrastructure, collaboration, and management solutions for businesses | IT Services and IT Consulting | 🇫🇷 Rennes | 468 | 1981 |
| 6 | [Office Notarial Anastasia Moreau](https://www.tamtam.ai/c/office-notarial-anastasia-moreau) (moreau-fougeres.notaires.fr)<br>Located in the heart of Fougères, this company offers legal services in real estate, family, and corporate law, focusing on accessibility, listening, and modernity | Legal Services | 🇫🇷 Fougères | 447 |  |
| 7 | [Geirec](https://www.tamtam.ai/c/geirec) (geirec.com)<br>An independent regional cabinet with a national focus, GEIREC supports businesses with expertise and values, offering daily partnership, confidentiality, competence, and responsiveness | Accounting | 🇫🇷 Rennes | 308 | 1979 |
| 8 | [SPC](https://www.tamtam.ai/c/spc-parthenay-de-bretagne) (servicepro-bretagne.com)<br>This company specializes in industrial automation and robotics, supporting integrators and manufacturers in their projects with expert guidance. | Automation Machinery Manufacturing | 🇫🇷 Parthenay-de-Bretagne | 277 | 2016 |
| 9 | [CAPEOS](https://www.tamtam.ai/c/capeos-rennes) (capeos.fr)<br>Provides comprehensive accounting, legal, and tax services alongside audit, wealth management, and IT solutions for companies across diverse sectors through local offices. | Accounting | 🇫🇷 Rennes | 266 | 1979 |
| 10 | [QUARTA](https://www.tamtam.ai/c/quarta) (quarta.fr)<br>Precision measurement and 3D modeling for urban and rural spaces Creating high value projects through expertise in surveying, urban engineering, and VRD design | Civil Engineering | 🇫🇷 Saint Jacques de la Lande | 259 | 1982 |
| 11 | [Groupe Creative](https://www.tamtam.ai/c/groupe-creative) (groupe-creative.fr)<br>Works with clients on IT and digital transformation projects, offering expertise in consulting, creation, development, research, and innovation across various digital domains. | IT Services and IT Consulting | 🇫🇷 Rennes | 232 | 2008 |
| 12 | [Intérim Emploi Service](https://www.tamtam.ai/c/interim-emploi-service) (interim-emploi-service.fr)<br>A company in Rennes offering temporary work, job placements, and professional development while prioritizing employee skills, safety, diversity, and discrimination prevention | Staffing and Recruiting | 🇫🇷 Saint-Grégoire | 228 | 2005 |
| 13 | [Aqualeha](https://www.tamtam.ai/c/aqualeha) (aqualeha.com)<br>The company offers a range of services to prevent food, safety, and environmental risks for the protection of assets and individuals | Biotechnology Research | 🇫🇷 Vitré | 216 | 1984 |
| 14 | [Groupe SECOB](https://www.tamtam.ai/c/groupe-secob) (secob.fr)<br>Provides accounting, payroll, and audit services supporting over 3500 companies in creation, development, and business transfer phases. | Business Consulting and Services | 🇫🇷 Cesson-Sévigné | 192 | 1963 |
| 15 | [Groupe Interaction](https://www.tamtam.ai/c/groupe-interaction) (interaction-groupe.com)<br>This company facilitates employment access, offering temp agencies, recruitment firms, specialized services, digital solutions, and a training center for diverse job seekers. | Staffing and Recruiting | 🇫🇷 Rennes | 178 | 1991 |
| 16 | [Lavance](https://www.tamtam.ai/c/lavance) (lavance.com)<br>Provider of vehicle washing equipment and services including high-pressure centers, tunnels, water recycling, financing, maintenance, and station operation support. | Automation Machinery Manufacturing | 🇫🇷 Le Rheu | 168 | 1979 |
| 17 | [TALENDI](https://www.tamtam.ai/c/talendi) (talendi.com)<br>A social enterprise offering industrial and digital services, employing over 550 people, including 420 with disabilities, with expertise in various fields like assembly and logistics | Motor Vehicle Parts Manufacturing | 🇫🇷 Rennes | 137 | 1975 |
| 18 | [Adventiel](https://www.tamtam.ai/c/adventiel) (adventiel.fr)<br>Adventiel is a specialized consultancy firm assisting agricultural and food industries in transitioning to sustainable models through customized digital solutions | Software Development | 🇫🇷 Pacé | 107 |  |
| 19 | [Tourny Meyer](https://www.tamtam.ai/c/tourny-meyer) (tournymeyer.fr)<br>Offers business real estate consulting, sales, and leasing services for offices, warehouses, retail, hotels, and urban developments across multiple French cities. | Real Estate | 🇫🇷 Rennes | 101 | 1990 |
| 20 | [TALENZ TOADENN](https://www.tamtam.ai/c/talenz-toadenn) (talenz.fr)<br>Multidisciplinary consulting firm supporting entrepreneurs and business leaders with strategy, finance, compliance, audit, legal, HR, and technology solutions. | Business Consulting and Services | 🇫🇷 Rennes | 92 |  |
| 21 | [ADENT](https://www.tamtam.ai/c/adent) (adentingenierie.com)<br>Designing sustainable and adaptable agri-food factories that are both thoughtful and harmonious in their construction and operation | Construction | 🇫🇷 Rennes | 92 | 2006 |
| 22 | [APAVE REGION BRETAGNE-MAINE](https://www.tamtam.ai/c/apave-region-bretagne-maine) (apave.com)<br>Apave provides comprehensive risk management services to companies and communities worldwide, aiming to increase safety, protect the environment, and optimize organizational performance | Environmental Services | 🇫🇷 Le Rheu | 89 | 1867 |
| 23 | [CYIM](https://www.tamtam.ai/c/cyim) (cyim.com)<br>A company specializing in IT and audiovisual services for medical societies, offering digital solutions for medical congresses and associations | IT Services and IT Consulting | 🇫🇷 Rennes | 88 | 2001 |
| 24 | [Happy to meet you](https://www.tamtam.ai/c/happy-to-meet-you) (happytomeetyou.fr)<br>Provides human resources and communication expertise to companies, focusing on executive recruitment and HR consulting, including organizational transformation, development, and skill assessments. | Human Resources Services | 🇫🇷 Rennes | 71 | 2016 |
| 25 | [Excelis Conseil](https://www.tamtam.ai/c/excelis-conseil) (excelis-conseil.fr)<br>Accounting and audit firm with 75 professionals and 6 partners in Rennes and Vannes Serving 1,500+ clients in the Grand Ouest region | Accounting | 🇫🇷 Pacé | 70 | 2003 |
| 26 | [L'Optimiste le Groupe](https://www.tamtam.ai/c/l-optimiste-le-groupe) (loptimiste.fr)<br>Collective of experts providing strategy, accounting, HR, legal, financing, and CSR support to over 1,500 SMEs in France. | Accounting | 🇫🇷 Rennes | 68 | 2016 |
| 27 | [COMPTAGESMA](https://www.tamtam.ai/c/comptagesma) (comptagesma.com)<br>Comptagesma guides entrepreneurs from company creation to accounting, tax optimization, and strategic advice, with a focus on proximity, technology, and social responsibility | Accounting | 🇫🇷 Saint-Malo | 67 | 1979 |
| 28 | [Cabinet BOURGOIS - Groupe MERLIN](https://www.tamtam.ai/c/cabinet-bourgois-groupe-merlin) (cabinet-merlin.fr)<br>A recognized player in environmental consulting and engineering for over 80 years, based in Betton, France, as a subsidiary of Groupe MERLIN | Environmental Services | 🇫🇷 Betton | 53 | 1938 |
| 29 | [Digitalis](https://www.tamtam.ai/c/digitalis) (digitalis.fr)<br>Digitalis specializes in providing custom, user-friendly audiovisual solutions to enhance workspaces, focusing on innovation, simplicity, and productivity for businesses and institutions | IT Services and IT Consulting | 🇫🇷 Cesson-Sévigné | 51 | 2016 |
| 30 | [Provectio](https://www.tamtam.ai/c/provectio) (provectio.fr)<br>IT services provider offering IT management, security, cloud computing, telecommunications, and network availability for businesses, providing support, strategy, and technical expertise | Telecommunications | 🇫🇷 Rennes | 48 | 2004 |

## 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 13, 2026.

## More company lists in the Ille-et-Vilaine department

- [The largest companies in the Ille-et-Vilaine department](https://www.tamtam.ai/l/largest-companies-ille-et-vilaine) (1,454)
- [Companies with in-house R&D in the Ille-et-Vilaine department](https://www.tamtam.ai/l/r-and-d-companies-ille-et-vilaine) (152)
- [Retail chains in the Ille-et-Vilaine department](https://www.tamtam.ai/l/retail-chains-ille-et-vilaine) (135)
- [Multinational companies in the Ille-et-Vilaine department](https://www.tamtam.ai/l/multinational-companies-ille-et-vilaine) (118)
- [Manufacturers in the Ille-et-Vilaine department](https://www.tamtam.ai/l/manufacturers-ille-et-vilaine) (100)
- [SaaS companies in the Ille-et-Vilaine department](https://www.tamtam.ai/l/saas-companies-ille-et-vilaine) (85)
- [Family-owned companies in the Ille-et-Vilaine department](https://www.tamtam.ai/l/family-owned-companies-ille-et-vilaine) (81)
- [Software Development companies in the Ille-et-Vilaine department](https://www.tamtam.ai/l/software-development-companies-ille-et-vilaine) (80)
- [Public sector organisations in the Ille-et-Vilaine department](https://www.tamtam.ai/l/public-sector-organisations-ille-et-vilaine) (75)
- [IT Services and IT Consulting companies in the Ille-et-Vilaine department](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-ille-et-vilaine) (67)
- [IT services companies in the Ille-et-Vilaine department](https://www.tamtam.ai/l/it-services-companies-ille-et-vilaine) (65)
- [Hardware manufacturers in the Ille-et-Vilaine department](https://www.tamtam.ai/l/hardware-companies-ille-et-vilaine) (61)
- [Education providers in the Ille-et-Vilaine department](https://www.tamtam.ai/l/education-companies-ille-et-vilaine) (60)
- [Distributors and wholesalers in the Ille-et-Vilaine department](https://www.tamtam.ai/l/distributors-and-wholesalers-ille-et-vilaine) (58)
- [Consulting firms in the Ille-et-Vilaine department](https://www.tamtam.ai/l/consulting-firms-ille-et-vilaine) (54)
- [Food and Beverage Manufacturing companies in the Ille-et-Vilaine department](https://www.tamtam.ai/l/food-and-beverage-manufacturing-companies-ille-et-vilaine) (46)
- [Retail companies in the Ille-et-Vilaine department](https://www.tamtam.ai/l/retail-companies-ille-et-vilaine) (46)
- [Critical infrastructure operators in the Ille-et-Vilaine department](https://www.tamtam.ai/l/critical-infrastructure-operators-ille-et-vilaine) (45)
- [Financial services firms in the Ille-et-Vilaine department](https://www.tamtam.ai/l/financial-services-firms-ille-et-vilaine) (45)
- [Subscription businesses in the Ille-et-Vilaine department](https://www.tamtam.ai/l/subscription-businesses-ille-et-vilaine) (45)
- [Construction companies in the Ille-et-Vilaine department](https://www.tamtam.ai/l/construction-companies-ille-et-vilaine) (43)
- [Law Practice companies in the Ille-et-Vilaine department](https://www.tamtam.ai/l/law-practice-companies-ille-et-vilaine) (43)
- [Higher Education companies in the Ille-et-Vilaine department](https://www.tamtam.ai/l/higher-education-companies-ille-et-vilaine) (41)
- [Legal Services companies in the Ille-et-Vilaine department](https://www.tamtam.ai/l/legal-services-companies-ille-et-vilaine) (41)

## The same list elsewhere in France

- [Professional services firms in France](https://www.tamtam.ai/l/professional-services-firms-france) (6,610)
- [Professional services firms in Île-de-France](https://www.tamtam.ai/l/professional-services-firms-ile-de-france) (3,376)
- [Professional services firms in Auvergne-Rhône-Alpes](https://www.tamtam.ai/l/professional-services-firms-auvergne-rhone-alpes) (711)
- [Professional services firms in the Hauts-de-Seine department](https://www.tamtam.ai/l/professional-services-firms-hauts-de-seine) (629)
- [Professional services firms in Provence-Alpes-Côte d'Azur](https://www.tamtam.ai/l/professional-services-firms-provence-alpes-cote-dazur) (433)
- [Professional services firms in the Rhône department](https://www.tamtam.ai/l/professional-services-firms-rhone) (400)
- [Professional services firms in Occitanie](https://www.tamtam.ai/l/professional-services-firms-occitanie) (399)
- [Professional services firms in Grand Est](https://www.tamtam.ai/l/professional-services-firms-grand-est) (317)
- [Professional services firms in Nouvelle-Aquitaine](https://www.tamtam.ai/l/professional-services-firms-nouvelle-aquitaine) (308)
- [Professional services firms in Hauts-de-France](https://www.tamtam.ai/l/professional-services-firms-hauts-de-france) (260)
- [Professional services firms in Pays de la Loire](https://www.tamtam.ai/l/professional-services-firms-pays-de-la-loire) (253)
- [Professional services firms in the Bouches-du-Rhône department](https://www.tamtam.ai/l/professional-services-firms-bouches-du-rhone) (249)
- [Professional services firms in the Haute-Garonne department](https://www.tamtam.ai/l/professional-services-firms-haute-garonne) (208)
- [Professional services firms in the Nord department](https://www.tamtam.ai/l/professional-services-firms-nord) (178)
- [Professional services firms in Brittany](https://www.tamtam.ai/l/professional-services-firms-brittany) (167)
- [Professional services firms in the Loire-Atlantique department](https://www.tamtam.ai/l/professional-services-firms-loire-atlantique) (158)
- [Professional services firms in the Gironde department](https://www.tamtam.ai/l/professional-services-firms-gironde) (151)
- [Professional services firms in Normandy](https://www.tamtam.ai/l/professional-services-firms-normandy) (114)
- [Professional services firms in the Yvelines department](https://www.tamtam.ai/l/professional-services-firms-yvelines) (108)
- [Professional services firms in Paris](https://www.tamtam.ai/l/professional-services-firms-paris) (2,241)
- [Professional services firms in Lyon](https://www.tamtam.ai/l/professional-services-firms-lyon) (265)
- [Professional services firms in Toulouse](https://www.tamtam.ai/l/professional-services-firms-toulouse) (139)
- [Professional services firms in Marseille](https://www.tamtam.ai/l/professional-services-firms-marseille) (123)
- [Professional services firms in Boulogne-Billancourt](https://www.tamtam.ai/l/professional-services-firms-boulogne-billancourt) (102)

## The same list elsewhere

- [Professional services firms in the world](https://www.tamtam.ai/l/professional-services-firms-in-the-world) (24,737)
- [Professional services firms in Europe](https://www.tamtam.ai/l/professional-services-firms-in-europe) (13,699)

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Source: https://www.tamtam.ai/l/professional-services-firms-ille-et-vilaine