The professional services firms in Seine-et-Marne are mostly mid-sized companies providing a range of specialized expertise. Fives Maintenance offers industrial maintenance, ELCIMAÏ specializes in building and process engineering, and Crowe Fideliance is an accounting firm with broad financial services. Upper-Link focuses on collaborative IT solutions, while Baryton integrates ERP, CRM, and BI systems.
These firms show a significant presence in IT services, engineering, and financial consulting, indicating a diverse professional landscape. Headquarters are spread across several towns in the department, including Montévrain, Melun, Fontainebleau, and Champs-sur-Marne. Many of these companies were founded between the late 1980s and early 2000s, suggesting a period of growth in specialized service provision.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Fives Maintenancefivesgroup.com
Specializing in industrial maintenance for over twenty years, offering tailored solutions to ensure high availability of production facilities with a focus on safety and environmental responsibility |
495 | |||
| 2 |
ELCIMAÏelcimai.com
A French holding specializing in building and process engineering, logistics consulting, and IT engineering, with subsidiaries catering to various industries |
378 | |||
| 3 |
Crowe Fideliancefideliance.fr
Accounting firm offering audit, consulting, wealth management, legal advice, financial reporting, social management, CSR, and digital services across multiple French locations. |
318 | |||
| 4 |
Upper-Link (Inherent Group)upper-link.com
With over 15 years of experience, the company specializes in collaborative solutions such as Share Point, Domino, and EMP for effective project management |
92 | |||
| 5 |
Barytongroupetenor.com
Integration of ERP, CRM, and BI solutions for SMEs and mid-sized companies to optimize business management and improve productivity. |
59 | |||
| 6 |
Factory Software - AVEVA Select Francefactorysoftware.fr
Development of reliable, scalable industrial software supporting Industry 4.0 and Smart Cities, serving industrial clients and infrastructure operators. |
42 | |||
| 7 |
Assistra Conseil en Recrutement & Missionsassistra.fr
Provides temporary specialized staff and recruits executive and non-executive personnel, including engineers and technicians, across various sectors in EU and French-speaking Maghreb countries. |
40 | |||
| 8 |
Groupe Foncier de France FRgroupe-foncier-de-france.fr
Real estate group specialized in property management, rental management, real estate transactions, investor support across France for individuals and institutions. |
35 | |||
| 9 | 29 | ||||
| 10 |
Pharmaspecificpharmaspecific.com
Specialized clinical research company based in Paris area Offers efficient support for clinical and epidemiological trials on national, European, and international levels, focusing on Oncology, cardiology, and Hematology |
28 | |||
| 11 |
Ferro Ingenierieferro-ingenierie.fr
With over 30 years of experience, this engineering firm provides project management and technical expertise services for building and network projects nationally and internationally |
27 | |||
| 12 |
C4C Études & Expertisesc4c-etudes-expertises.fr
A technical support company specializing in asbestos and lead expertise, project management, coordination, and supervision of construction projects in the building and civil engineering sectors |
20 | |||
| 13 | 20 | ||||
| 14 |
Cabinet Collet & Associéscabinetcollet.net
Expert accounting and auditing services, including payroll, legal, agricultural, and equestrian matters, with strong activity in construction, hospitality, medical, real estate, and associations. |
20 | |||
| 15 |
CABINET ECBcabinetecb.com
ECB provides comprehensive expertise in accounting, tax, legal, and business advisory services to entrepreneurs, guiding them through all stages of company growth |
19 | |||
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| 16 |
PCM GEODATA (SECTEUR)pcm-ingenierie.fr
PCM Geodata offers technical solutions for soil, structure, infrastructure, and network modeling through a multidisciplinary team of technicians and engineers |
16 | |||
| 17 |
VisioTerravisioterra.fr
Scientific consulting for Earth Observation programs through expert support, technical studies, software development, quality control, instrument verification, and GIS cartographic product manufacturing. |
16 | |||
| 18 |
CSM EXPERTISEcsmexpertise.fr
CSM EXPERTISE, founded in 2000, provides comprehensive financial, tax, and social management services to business leaders, along with commissariat aux comptes missions |
13 | |||
| 19 |
META Conseil SASmeta-conseil.com
META Conseil provides high-value strategic consulting services in a variety of public funding and innovation areas, going beyond traditional frameworks to meet client expectations |
11 | |||
| 20 |
BBA Audit Expertise Conseilsgroupe-bba.com
An accounting firm located in Paris and Chanteloup-en-Brie, providing comprehensive support to businesses throughout their lifespan |
10 | |||
| 21 |
GROUPE HEBERT EXPERTISES - Expert immobilier - Expertise en évaluation immobilière -Francehebertexpertises.com
Specializing in real estate valuation in France, the company has formed a group to enhance its services and resources for a competitive economic environment |
10 | |||
| 22 |
Buy the Moonbuythemoon.fr
A specialized consulting firm in project purchasing for construction and IT sectors, offering services in public and private markets with a focus on procurement strategy and tools |
10 | |||
| 23 | 
Jason Consultingjason-consulting.fr
A multicultural company specializing in managing information security, risk management processes, compliance, and creating solutions for success in dynamic environments |
9 | |||
| 24 |
COMITE CONSEILScomite-conseils.com
Specialized consulting firm dedicated to social and economic committees (CSE) and employee representative bodies Offering daily support in labor relations and accredited training center |
9 | |||
| 25 |
Qualithqualith.fr
A French family group dedicated to creating enlightened solutions through mastered value chains, economic efficiency, human relations, and environmental protection |
9 | |||
| 26 |
C-JUSTICE - Commissaires de justice (Huissiers de justice)brie-huissier-77.fr
C-JUSTICE is a team of experienced enforcement officers providing high-quality, efficient, and transparent services in the Paris region, certified with ISO 9001 |
9 | |||
| 27 |
Aparté Expertise & Conseilaparte-conseil.com
Aparté aims to provide expertise and responsiveness to businesses, allowing them to focus entirely on their core activities |
9 | |||
| 28 |
Ickowicz Notairesickowicz.notaires.fr
Our studies located in Vaujours (93) and Le Pin (77) provide support throughout the Paris East region |
7 | |||
| 29 |
Binome Experts-Comptablesbinome-experts.fr
Accounting firm providing business development support to companies locally in Serris, Paris region, and internationally for nearly 20 years. |
7 | |||
| 30 |
HARMONY COMPTA - EXPERTISE ET CONSEIL
A small, customer-focused firm providing comprehensive accounting, tax, social, and legal services to meet the needs of businesses |
6 | |||
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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 13, 2026.
More company lists in the Seine-et-Marne department
- The largest companies in the Seine-et-Marne department 946
- Multinational companies in the Seine-et-Marne department 139
- Companies with in-house R&D in the Seine-et-Marne department 104
- Manufacturers in the Seine-et-Marne department 100
- Hardware manufacturers in the Seine-et-Marne department 84
- Distributors and wholesalers in the Seine-et-Marne department 82
- Retail chains in the Seine-et-Marne department 68
- Construction companies in the Seine-et-Marne department 57
- Public sector organisations in the Seine-et-Marne department 49
- Family-owned companies in the Seine-et-Marne department 48
- Government Administration companies in the Seine-et-Marne department 39
- Industrial Machinery Manufacturing companies in the Seine-et-Marne department 34
- Wholesale companies in the Seine-et-Marne department 34
- Critical infrastructure operators in the Seine-et-Marne department 33
- Retail companies in the Seine-et-Marne department 33
- Education providers in the Seine-et-Marne department 31
- IT Services and IT Consulting companies in the Seine-et-Marne department 31
- IT services companies in the Seine-et-Marne department 29
- Contract manufacturers in the Seine-et-Marne department 26
- Healthcare providers in the Seine-et-Marne department 26
- Higher Education companies in the Seine-et-Marne department 25
The same list elsewhere in France
- Professional services firms in France 6,610
- Professional services firms in Île-de-France 3,376
- Professional services firms in Auvergne-Rhône-Alpes 711
- Professional services firms in the Hauts-de-Seine department 629
- Professional services firms in Provence-Alpes-Côte d'Azur 433
- Professional services firms in the Rhône department 400
- Professional services firms in Occitanie 399
- Professional services firms in Grand Est 317
- Professional services firms in Nouvelle-Aquitaine 308
- Professional services firms in Hauts-de-France 260
- Professional services firms in Pays de la Loire 253
- Professional services firms in the Bouches-du-Rhône department 249
- Professional services firms in the Haute-Garonne department 208
- Professional services firms in the Nord department 178
- Professional services firms in Brittany 167
- Professional services firms in the Loire-Atlantique department 158
- Professional services firms in the Gironde department 151
- Professional services firms in Normandy 114
- Professional services firms in the Yvelines department 108
- Professional services firms in Paris 2,241
- Professional services firms in Lyon 265
- Professional services firms in Toulouse 139
- Professional services firms in Marseille 123
- Professional services firms in Boulogne-Billancourt 102