These professional services firms in Seine-Saint-Denis mostly comprise mid-sized and large companies. Recurring activities include facilities management, human resources, and environmental services. This selection features SPIE Facilities, which maintains buildings and facilities with a focus on energy performance, and Randstad France, offering recruitment and HR management solutions. Also present are Groupe Institut de Soudure, providing joining technology services, and Solutions30 France, which delivers technological solutions in IT, telecom, and energy.
The companies on this list exhibit a concentration of headquarters in certain communes, with Saint-Denis and Aubervilliers being notable hubs. Several firms specialize in similar areas, such as the multiple entities under the Randstad and Veolia groups, indicating a strong presence of these larger corporate structures in the department.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
SPIE Facilitiesspie.fr
Maintenance of buildings and facilities across France, focusing on energy performance, technical expertise, and sustainable facility management services. |
2,066 | |||
| 2 |
Randstad Francerandstad.fr
This company offers tailored recruitment and HR management solutions, connecting businesses with talent for various sectors including industry, IT, engineering, and finance. |
1,511 | |||
| 3 |
SPIE Building Solutions (France)spie.fr
Specializing in reducing building carbon footprint through intelligent solutions and expertise, this organization promotes safer, connected, comfortable, and high-performing buildings |
1,415 | |||
| 4 |
Groupe Institut de Soudureisgroupe.com
Provides joining technology services, testing, inspection, and training worldwide, supporting design, manufacturing, and maintenance with safety and quality focus. |
1,262 | |||
| 5 |
Randstad Inhouserandstad.fr
Providing dedicated onsite HR teams to industrial companies, managing recruitment, flexibility, and productivity to meet production goals efficiently. |
972 | |||
| 6 |
Groupe Randstad Francegrouperandstad.fr
Specialist in HR services, offering recruitment, integration, management, training, and mobility solutions to companies and candidates, with a strong focus on shaping the world of work |
903 | |||
| 7 |
Solutions30 Francesolutions30.com
The company provides technological solutions to individuals and businesses in Europe in areas such as IT, telecom, energy, connected devices, security, and facility management |
695 | |||
| 8 | 645 | ||||
| 9 |
Veolia | Engineering & Consultingengineering-consulting.veolia.com
Consulting engineering and strategic assistance division specializing in designing sustainable solutions for public, industrial, and tertiary sectors, focusing on resource management and performance improvement |
436 | |||
| 10 |
Veolia Industries Global Solutionsindustries.veolia.com
Specializes in energy efficiency and performance solutions, focusing on optimizing industrial energy use and sustainability practices. |
417 | |||
| 11 |
CORELIAcorelia.ai
CORELIA correlates data for clients, blending expertise with project complexity through IT and business alignment, emphasizing data's importance in all projects |
402 | |||
| 12 |
Defense Environnement Servicesindustries.veolia.com
Specializes in industrial maintenance, facility management, and logistics for complex defense environments including production sites, offices, and military bases. |
354 | |||
| 13 |
Atalian Sécuritéatalian.fr
Specialized security company with a dedicated team collaborating with major French and international groups, offering a unique and cosmopolitan Security Journey |
315 | |||
| 14 | 281 | ||||
| 15 | 250 | ||||
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 | 250 | ||||
| 17 |
EMGgravitymedia.com
A leading provider of broadcast services and media solutions for live sports, entertainment, and events with a global presence |
224 | |||
| 18 |
ARTEMIS Group / 7 filialesgroupartemis.fr
Family-owned private security firm providing human guarding, mobile patrols, professional training, fire protection, electronic security, remote monitoring, and event hosting services across France. |
211 | |||
| 19 |
INTERCOM Technologiesintercom-technologies.fr
Specialized in high-value project expertise and management, supporting strategy, providing expert assistance, and operating nearshore agency for quality and growth. |
197 | |||
| 20 |
LINKBYNETaccenture.com
A innovative company providing outsourcing and cloud computing solutions, focusing on digital infrastructure development, management, and security for business transformation |
196 | |||
| 21 |
OGI - OMNIUM GÉNÉRAL D'INGENIERIEogi2.fr
OGI is a specialized engineering firm for public space development, offering a range of technical expertise for all aspects of project planning |
190 | |||
| 22 |
COTEBAarteliagroup.com
European leader in engineering and project management, specializing in construction, infrastructure, and environment projects with a focus on professionalism, ethics, and sustainability |
154 | |||
| 23 |
aéroportuairesodaic.fr
An aviation and aerospace company headquartered in France, specializing in aircraft technologies and solutions within the industry |
147 | |||
| 24 |
Groupe SI BUREAUTIQUE FRANCEsibureautique.com
Established in 2005, a group of entities offering tailored solutions in printing, telephony, IT, and digital services to improve workplace efficiency |
64 | |||
| 25 |
SoftwareOne Francesoftwareone.com
Global provider of software and cloud solutions, specializing in license lifecycle management, migration, modernization, and digital transformation support. |
60 | |||
| 26 | 54 | ||||
| 27 |
SARDEL Conseilsardel.fr
Identifies young talent, provides specialized mainframe technology training, and facilitates placement into prestigious organizations to ensure sustainable long-term employment for computer science graduates. |
54 | |||
| 28 |
Altametrisaltametris.com
A French expert in generating geotechnical data for industrial infrastructure operators, specializing in 3D mapping, land surveys, BIM modeling, and more |
53 | |||
| 29 | 53 | ||||
| 30 |
AMOPRIM/AMODEVamodev.eu
Specialized in real estate project consulting for public actors, investors, and developers Services include auditing, project management, environmental assistance, and more |
49 | |||
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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.
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The same list elsewhere in France
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