The Val-de-Marne department hosts a concentration of consulting firms, primarily in IT services, engineering, and environmental solutions. These companies range from established mid-sized firms to larger groups, reflecting a mature business environment. Key players include HN Services, providing IT services across various sectors; Saretec Group, specializing in insurance expertise; ADVANS Group, an engineering firm focused on electronic and software systems; and ONF International, offering forestry expertise.
A notable pattern among these firms is the strong presence of companies founded in the 1980s and 1990s, suggesting a period of significant growth and establishment for the consulting sector in the region. Many are headquartered in Charenton-le-Pont, Créteil, and Vincennes, indicating clusters of business activity within the department.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
HN Serviceshn-services.com
Provides IT services across banking, insurance, retail, and industry sectors, with an internal institute for professional IT training and career development. |
1,476 | |||
| 2 |
Saretec Groupsaretec.fr
Specializing in insurance expertise and arbitration, we handle various areas such as construction, property, liability, and catastrophe response for insurers |
1,313 | |||
| 3 |
ADVANS Groupadvans-group.com
Engineering firm specializing in electronic, software, and mechanical systems; handles projects or provides expertise in microelectronics, software development, data/AI, and mechanical engineering. |
1,040 | |||
| 4 |
IT Link Groupitlink.fr
Innovates and optimizes connected systems, developing products and services in embedded intelligence, IoT, data, mobile apps, safety, business systems, engineering, and change management. |
882 | |||
| 5 |
ONF Internationalonfinternational.org
Provides international forestry expertise, technical assistance, and training in natural forest management, climate projects, mapping, risk prevention, and biomass energy. |
791 | |||
| 6 |
Intaliointalio.com
Accelerates business evolution with software solutions, improving speed, efficiency, and accuracy. Provides next-generation digital transformation, tackling frontier technology challenges. |
560 | |||
| 7 |
Blue Softbluesoft-group.com
Blue Soft Group is a Digital Services Enterprise specializing in consulting, Cloud, agile development, UX/UI, and Microsoft solutions to optimize IT and business projects |
501 | |||
| 8 |
Jilitijiliti-group.com
A trusted partner specializing in IT infrastructure management, offering agile solutions to maintain, transform, and optimize data centers for sustainable performance worldwide |
350 | |||
| 9 |
MANERGYmanergy.fr
Specialized engineering and consulting firm providing innovative, sustainable solutions for energy efficiency, decarbonization, and renewable energy transitions across multiple sectors. |
343 | |||
| 10 | 339 | ||||
| 11 |
BPCE Solutions immobilièresbpce.fr
BPCE Real Estate Solutions is a leading French real estate consultancy providing a full range of services to assist property owners, professionals, financial institutions, and individuals in optimizing their assets |
257 | |||
| 12 | 220 | ||||
| 13 |
SEMOFIsemofi-groupe.fr
A geosciences consulting firm offering a complete range of services to optimize projects for municipalities, developers, and builders, with a focus on teamwork and personal growth |
122 | |||
| 14 |
EOL "A Dils company"eol.fr
Specializes in corporate real estate transactions, investment advice, project management assistance, and energy innovation for logistics and industrial buildings. |
105 | |||
| 15 |
Junior Conseil Takerjuniortaker.com
Student association providing motivated and skilled students to develop IT projects for companies, bridging academic knowledge with real-world applications. |
69 | |||
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 |
AISI - Expert Cybersécurité, Infrastructure & Gouvernanceaisi.fr
Provides cybersecurity expertise and infrastructure solutions for SMEs, mid-caps, and local authorities, ensuring digital protection and resilience against cyber threats through active defense and expert management. |
55 | |||
| 17 |
EPF Projetsepfprojets.com
Student-led engineering consultancy providing IT development, business strategy, structural modeling, and eco-design services for entrepreneurs and large corporations seeking innovative and competitive technical solutions. |
47 | |||
| 18 |
SIS Technologiessis-t.com
Provides complete solutions in the field of new technologies to ensure focus on your business and secure your operations |
44 | |||
| 19 | 42 | ||||
| 20 |
Groupe Avanistaavanista.fr
Avanista is a French company founded by two professionals with 30 years of IT service experience, prioritizing quality and a people-centric approach |
40 | |||
| 21 |
INCONCEPTinconcept.eu
Established in 1999, this company offers offshore engineering, subsea, and shipbuilding services with a focus on project management and solving technical challenges |
40 | |||
| 22 |
FERCOferco-experts.fr
FERCO is an accounting firm in the Île-de-France region, providing expert advice in accounting, tax, financial, legal, and social matters to help businesses grow |
34 | |||
| 23 |
ARESCOM - Société informatiquearescom.fr
Arescom offers comprehensive IT consulting, management, security, and optimization services to over 200 clients, focusing on customer satisfaction and digital transformation solutions |
34 | |||
| 24 |
QuantStackquantstack.net
The company specializes in developing scientific computing software including high performance C++, Python scientific stack, and interactive data visualization for web browsers |
32 | |||
| 25 |
NR CONSEILnr-conseil.net
Specializing in building and urban infrastructure, our company provides consulting, design, and engineering services for projects from feasibility to completion |
32 | |||
| 26 |
Res publica - Cabinet de concertationrespublica-conseil.fr
Res publica specializes in engineering public participation processes for clients, helping improve decision-making and democratic functioning through method, rigor, and innovation |
30 | |||
| 27 |
GT Expertisegt-expertise.fr
Provides accounting, tax, legal, payroll, HR, and consulting services for entrepreneurs. Focuses on client trust, transparency, and knowledge sharing in Saint-Mandé. |
30 | |||
| 28 |
Mentorymentory.eu
Mentory is a project focused on inclusive skills acquisition in the Telecoms, Industries, and Infrastructure sectors |
27 | |||
| 29 |
SILAMIR GROUPsilamir.com
Specializing in IT security and Mainframe recruitment for niche roles, our company focuses on human management and partnership with clients for project success |
26 | |||
| 30 | 24 | ||||
Turn this list into pipeline
Tamtam finds the decision-makers at every company on a list like this one, with verified emails, phone numbers and the buying signals that tell you when to reach out.
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 the Val-de-Marne department
- The largest companies in the Val-de-Marne department 1,386
- Multinational companies in the Val-de-Marne department 200
- Companies with in-house R&D in the Val-de-Marne department 134
- IT Services and IT Consulting companies in the Val-de-Marne department 113
- IT services companies in the Val-de-Marne department 101
- Distributors and wholesalers in the Val-de-Marne department 91
- Retail chains in the Val-de-Marne department 88
- Professional services firms in the Val-de-Marne department 88
- Manufacturers in the Val-de-Marne department 85
- Hardware manufacturers in the Val-de-Marne department 76
- Public sector organisations in the Val-de-Marne department 75
- Education providers in the Val-de-Marne department 72
- Construction companies in the Val-de-Marne department 63
- SaaS companies in the Val-de-Marne department 59
- Software Development companies in the Val-de-Marne department 57
- Business Consulting and Services companies in the Val-de-Marne department 48
- Government Administration companies in the Val-de-Marne department 45
- Healthcare providers in the Val-de-Marne department 44
- Pharmaceutical companies in the Val-de-Marne department 43
- Critical infrastructure operators in the Val-de-Marne department 42
- Higher Education companies in the Val-de-Marne department 42
- Family-owned companies in the Val-de-Marne department 42
- Accounting firms in the Val-de-Marne department 37
- Accounting companies in the Val-de-Marne department 37
The same list elsewhere in France
- Consulting firms in France 4,252
- 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 161
- 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 Gironde department 82
- Consulting firms in the Yvelines department 72
- 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