These professional services firms in Grand Est are mainly large enterprises, with a strong presence in IT services and industrial engineering. Astek supports digital transformation, while Euro Information Developpements provides IT systems for banks. Clemessy specializes in electrical and mechanical engineering, and Technology & Strategy offers engineering and digital consulting. Omexom focuses on power grid solutions, and Axima Réfrigération France is an industrial refrigeration specialist.
The companies listed show a mix of sectors. While IT services and industrial engineering are prominent, there are also firms like SUPPLAY in staffing and recruiting, and BNP Paribas Wealth Management in banking. The presence of companies like Groupe Ponticelli Frères, founded in 1921, and Axima Réfrigération France, founded in 1876, indicates a strong historical industrial base.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Astekastekgroup.fr
Supports clients with high-value service, deep technical expertise across technology, operations, and engineering, focusing on sustainable digital transformation with humans at the core. |
6,035 | |||
| 2 |
Air France Industries KLM Engineering & Maintenanceafiklmem.com
Provides comprehensive aircraft maintenance, repair, and overhaul services, focusing on air safety, operational management, cost minimization, and technical excellence with an extensive track record. |
3,989 | |||
| 3 |
Euro Information Developpements / EIDe-i.com
IT subsidiary of a bank-insurance group, designing, building, maintaining, and operating an information system unit for affiliated banks with 2300 employees across various locations |
3,624 | |||
| 4 |
Clemessyclemessy.com
Specializing in electrical and mechanical engineering, Clemessy designs, installs, and maintains systems for various industries worldwide, with a strong focus on industrial installations |
2,405 | |||
| 5 |
Technology & Strategytands.com
Provides engineering, digital, and consulting services, developing innovative projects for industrial, automotive, and financial sectors with a focus on human values and global presence. |
2,370 | |||
| 6 |
Twodaytwoday.com
Providing AI-driven software engineering and business applications to help public and private sectors make better decisions and create meaningful change. |
2,347 | |||
| 7 |
Groupe Ponticelli Frèresponticelli.com
Provides mechanical, piping, and lifting services globally, designing, building, modernizing, and maintaining production installations for energy, industrial, and infrastructure sectors. |
2,220 | |||
| 8 |
SUPPLAYsupplay.fr
Providing responsible and flexible staffing solutions to support economic actors in adapting to change, while prioritizing skill development and corporate social responsibility |
2,192 | |||
| 9 |
BNP Paribas Wealth Managementwealthmanagement.bnpparibas
Leading global private bank, supporting high-net-worth individuals, entrepreneurs, and families in protecting, growing, and passing on their assets, aiming for a sustainable future. |
2,186 | |||
| 10 | 2,040 | ||||
| 11 |
Omexomomexom.com
Specializing in power grid solutions, Omexom helps clients navigate the energy transition by integrating renewable energy, storage solutions, and smart infrastructures Independently selecting optimal technologies |
1,825 | |||
| 12 |
Gingergroupeginger.com
Leader in independent engineering, specializing in soil, water, material, and environmental engineering, securing projects, optimizing durability, and integrating them environmentally. |
1,777 | |||
| 13 |
Axima Réfrigération Franceequans.fr
Industrial refrigeration specialist providing installation and maintenance services for food industries, retail, logistics, and chemistry through a network of eighty French regional agencies. |
1,690 | |||
| 14 |
A2micile Europerassemblons-nos-talents.com
Network of over 100 agencies providing personal home care services across France, employing more than 3,000 staff members. |
1,660 | |||
| 15 |
Stelliantstelliant.com
Leading provider of insurance services, assisting individuals, professionals, businesses, and insurers with risk management, claims, and prevention across France and internationally. |
1,573 | |||
| 16 |
Start People Francestartpeople.fr
Specializes in recruiting, selecting, and placing trained, motivated personnel in permanent, temporary, or fixed-term contracts across France. |
1,385 | |||
| 17 |
Capfinancescapfinances.fr
Capfinances is an insurance broker specializing in wealth solutions, retirement savings, and protection for individuals and professionals, with a national presence |
1,142 | |||
| 18 |
SIS
A leading company in sanitation services (maintenance, control, rehabilitation) in the Grand Est region with 700 employees serving individuals, communities, and industries |
1,068 | |||
| 19 | 943 | ||||
| 20 |
Expectrarandstadprofessional.fr
A leading French company specializing in temporary staffing and recruitment of professionals offering expertise in IT, engineering, finance, sales, HR, and law |
920 | |||
| 21 |
Onet Sécuritéonet.fr
Company offers human and electronic security solutions, including remote surveillance, video protection, audit, and consulting, mastering engineering to operation for various sites. |
889 | |||
| 22 |
Alpes Contrôlesalpes-controles.fr
Support clients regulatory compliance construction, safety coordination, environmental protection, diagnostics, training, certification, with ethical governance and societal responsibility. |
856 | |||
| 23 |
EY Société d'Avocatsey.com
Provides legal and tax advisory services in France with expertise in tax, social law, business law, and international mobility management. |
838 | |||
| 24 |
SUP INTERIMsupinterim.fr
Staffing agency specializing in temporary work, fixed-term, and permanent contracts across various sectors like construction, logistics, and industry throughout France and Luxembourg. |
837 | |||
| 25 |
AFNOR Certificationafnor.org
This company is certified with NF Service in France and Service in Europe, ensuring high quality and standards in its operations |
669 | |||
| 26 | 664 | ||||
| 27 |
CDER : Expertise comptable et conseilcder.fr
Provides accounting, tax, legal, and social advisory services to farmers, artisans, small businesses, professionals, and individuals with expert support. |
660 | |||
| 28 | 637 | ||||
| 29 | 635 | ||||
| 30 |
Pentalogglobant.com
A global IT service platform under Globant, offering design, development, and marketing services, with agile methodologies and a focus on product value |
614 | |||
| 31 |
SGP Sécuritégroupesgp.fr
Provides human surveillance, reception, training, and technological security solutions for industrial, institutional, and complex high-security sectors across France and internationally. |
608 | |||
| 32 |
Groupe Menwaygroupemenway.com
Independent human resources actor, federating complementary expertise in HR to meet organizational challenges, supporting individuals throughout their professional lives. |
604 | |||
| 33 |
ADISadis-assurances.com
Management center for insured association specializing in retirement, savings, provident, and health insurance serving over 700,000 members. |
559 | |||
| 34 |
julhiet sterwenjulhiet-sterwen.com
Key player in management, human resources and operational consulting. Blends talent and business know-how, accelerating companies’ competitiveness through practical, innovative, digital solutions. |
548 | |||
| 35 |
Hervé Schauer Consultants (HSC)hs2.fr
Provides information security consulting, audits, penetration tests, risk management, and training services to secure diverse infrastructures and systems. |
500 | |||
| 36 |
ARTUS ONSITEartus-interim.com
A family-owned HR services company with over 30 years of experience, offering temporary staffing, recruitment, training, and workforce management solutions across various sectors |
460 | |||
| 37 |
SODI Maintenance et Services Industrielssodi.fr
Provides comprehensive industrial maintenance and cleaning services, specializing in high-pressure cleaning and petroleum work across various sectors like chemicals, refining, and automotive. |
431 | |||
| 38 |
Groupe DLSIgroupedlsi.com
Provides temporary staffing and human resource management services across multiple sectors in France, Luxembourg, Germany, Poland, and Switzerland. |
420 | |||
| 39 |
CERFRANCE Poitou-Charentespoitoucharentes.cerfrance.fr
Provides accounting expertise and business consulting services to entrepreneurs, supporting company creation, management, and succession in Poitou-Charentes. |
403 | |||
| 40 |
ICC Arbitrationiccwbo.org
Supervises and administers arbitration proceedings under ICC Rules, offering a reliable alternative to court litigation for international disputes, without nationality restrictions. |
401 | |||
| 41 | 398 | ||||
| 42 |
IZI confort, groupe EDFizi-by-edf-entretien.fr
Specialist in maintenance, servicing, and replacement of thermal heating installations for residential and commercial customers as part of the EDF Group. |
391 | |||
| 43 |
CSA (Institut d'Etudes)csa.eu
Provides companies and institutions understanding of consumer behaviors, analyzes environments, anticipates changes, and identifies engagement pathways for clear decision-making processes. |
384 | |||
| 44 |
SODEXO JUSTICE SERVICES
Based in Guyancourt, Île-de-France, France, this retail company operates from 6 Rue de la Redoute. No further details about specific products or services provided. |
361 | |||
| 45 | 353 | ||||
| 46 |
B-Hive Engineeringb-hive.fr
Offers innovative and effective engineering solutions across diverse sectors including energy, transport, telecom, life sciences, industry, construction, and IT. |
352 | |||
| 47 |
Lustrallustral.fr
Certified cleaning and facility services for tertiary, industrial, and healthcare sectors across France, Switzerland, and Tunisia, focusing on outsourcing and CSR optimization. |
344 | |||
| 48 |
Groupe OTEote-ingenierie.com
Multidisciplinary building engineering firm providing smart, long-lasting solutions across diverse sectors including industrial, pharmaceutical, data centers, and healthcare, combining advanced techniques and specialized entities. |
341 | |||
| 49 |
Novalixnovalix.com
Fully integrated drug discovery CRO offering support from target identification to preclinical candidates, specializing in medicinal chemistry, pharmacology, and biophysical techniques |
331 | |||
| 50 |
Menway Emploimenwayemploi.com
Menway Emploi offers permanent and temporary recruitment services, including internships, CDDs, and CDIs across various industries to support career aspirations |
330 | |||
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. | |||||
| 51 |
CLEEVENcleeven.com
Offers engineering consulting services, focusing on delivering exceptional technical skills and human qualities to support clients in achieving their project goals. |
328 | |||
| 52 |
Batt & Associésbatt.eu
Provides expert management and specialist support in bookkeeping, business advice, and tailored solutions for business sales and transfers. |
323 | |||
| 53 | 316 | ||||
| 54 |
IDEA France - Expertise automobileidea-expertises.com
Network of automotive experts providing damage assessment and repair evaluation for all motorized land and maritime vehicles across France. |
308 | |||
| 55 |
CERFRANCE Champagne Nord Est Ile de Francecerfrance.fr
Multidisciplinary association providing accounting, legal, and strategic advisory services to small businesses, farmers, and artisans across France through a local agency network. |
303 | |||
| 56 |
Next Décisionnext-decision.fr
A consulting firm specializing in business intelligence technologies, serving various industries in Western France with a focus on providing functional services to users |
277 | |||
| 57 |
Afigecafigec.com
Multi-skilled accounting firm, 40 years experience, 21 partners, 300 employees, offices in Paris, Lyon, Normandy, national player, international reach, 4400 clients. |
275 | |||
| 58 |
Confédération Nationale des Junior-Entreprisesjunior-entreprises.com
Enables students to gain professional experience by completing projects for clients, fostering skill development and real-world application. |
272 | |||
| 59 |
Harry Hope.harry-hope.com
Recruitment consultants with extensive experience and networks finding talent across various sectors for clients globally, matching candidates to roles and companies. |
270 | |||
| 60 |
DERgroupe-der.com
Specialized in building control, using infiltrometry and thermography to detect thermal losses, validate RT2012 and BBC labels, working on various projects |
264 | |||
| 61 |
DIOTdiot-siaci.com
A leading independent insurance brokerage in France and abroad, serving large corporations with a diverse range of specialties and international support in 135 countries |
261 | |||
| 62 |
IRH INGENIEUR CONSEILanteagroup.fr
International engineering and environmental consulting firm serving diverse clients worldwide with expertise in environmental solutions and sustainable development. |
261 | |||
| 63 |
Polyceapolyconseil.fr
Offers comprehensive digital transformation support to clients, developing high-value technical solutions and ambitious, state-of-the-art systems for various organizations. |
252 | |||
| 64 |
Mencomenco-rh.fr
Independent, human-sized temporary staffing and recruitment company operating in all business sectors, connecting talent with opportunities across diverse industries. |
249 | |||
| 65 | 248 | ||||
| 66 |
HSD Human Resource Solutionshsd-melt.com
Specializes in recruitment, temporary staffing, payroll management, and professional training across Europe and Sub-Saharan Africa with local market expertise. |
238 | |||
| 67 |
ACD AVOCATSacd.fr
Full-service legal support for companies across corporate, commercial, tax, and labor law, specializing in business development, innovation, restructuring, and collective proceedings. |
226 | |||
| 68 |
Hexanethexanet.fr
A Reims-based team of internet, network, and telecommunications professionals offering specialized services such as telecom, unified telephony, hosting, and more |
225 | |||
| 69 |
BDL - Expertise comptable, audit & conseilbdl-experts.com
Accounting, audit, and consulting services for businesses in northern France, managing thirty years of expertise with three hundred staff and monthly payroll processing. |
224 | |||
| 70 |
Ricoh Industrie France S.A.Sricoh-thermal.com
A global technology company offering innovative services and technologies in document management, IT services, printing solutions, visual communications, digital cameras, and industrial systems for 80 years |
205 | |||
| 71 |
GROUPE COFIMEhlb-groupecofime.com
Provides comprehensive accounting, auditing, legal, and social expertise alongside strategic business consulting, wealth management, and international development support through a specialized professional network. |
202 | |||
| 72 |
Hans & associéshans-associes.fr
Independent group with 400+ experts supporting over 9,000 companies across diverse sectors including agriculture, health, construction, and services. |
198 | |||
| 73 |
Sofitexsofitex.fr
With over 30 years in HR, this international network specializes in temporary work and permanent placements throughout France, Germany, Switzerland, and Luxembourg |
194 | |||
| 74 |
GROUPE MORGAN SERVICES Château-Thierrygroupe-morgan-services.fr
Specialist in recruitment and temporary personnel placement since 1972, providing staffing solutions through an extensive network of over ninety regional office branches. |
185 | |||
| 75 |
BS Engineeringbse-engineering.com
Partnering with construction players in civil engineering, transport infrastructure, energy, general installation, nuclear, and IT sectors. |
184 | |||
| 76 |
E'nergyse-nergys.com
Network of SMEs developing innovative solutions and services focused on water management and energy performance using digital technologies. |
181 | |||
| 77 |
FINVENSfinvens.fr
With over 20 years in financing for individuals, this company is the 3rd largest in France for credit consolidation, focusing on innovative solutions and team collaboration |
178 | |||
| 78 |
C'PROkoesio.com
Provides printing, IT, and telecom solutions. Local agencies ensure proximity service. Management prioritizes employee development, fostering a great workplace culture for staff and clients. |
178 | |||
| 79 |
Groupe BS - Bouchers Services - F2o - AgiliTgroupe-bs.com
Specialist in the food industry. Activities include meat processing, recruitment and training, and innovative solutions, with over 30 years of family history. |
175 | |||
| 80 |
Groupe GISMICgroupegismic.com
Provides expert quality assurance, control, and inspection services for diverse industries like oil & gas, energy, and construction projects globally, ensuring project integrity. |
169 | |||
| 81 |
Athéo Ingénierieatheo.net
Provides infrastructure engineering services with a diverse team of architects, engineers, and technicians skilled in construction and software tools. |
163 | |||
| 82 | 163 | ||||
| 83 |
GEZIM Emploigezim.fr
Provides temporary staffing and recruitment services across France, Germany, and Luxembourg, specializing in technical trades, tertiary sectors, and the hotel and catering industry since 1971. |
161 | |||
| 84 |
Premistapremista.fr
A key player in banking intermediation, the group represents major French banks through its agencies |
160 | |||
| 85 |
FIBA - Experts-comptablesgroupe-fiba.fr
Regional accounting firm offering expertise & advice to businesses, audit services, and personal consulting Specializing in all aspects of company and private financial management |
157 | |||
| 86 | 152 | ||||
| 87 |
NextRoadnextroad.com
Supporting infrastructure managers with building, knowing, and maintaining sustainable assets across two divisions: Roads & Works of Art, and Equipment. |
148 | |||
| 88 | 148 | ||||
| 89 |
Kelyps INTERIMkelyps-interim.com
Connecting businesses and candidates, a dynamic team supports projects. Specializing in matching companies with suitable individuals to fulfill staffing needs effectively. |
139 | |||
| 90 | 136 | ||||
| 91 |
Qualtech Groupequaltech-groupe.com
Companies optimize service offerings in research, analysis, consulting, and training to meet client demands, with innovative technical infrastructure and industrial pilots. |
134 | |||
| 92 |
Groupe Candorgroupecandor.com
The company specializes in hygiene, cleanliness, and related services, emphasizing quality, human values, and employee development to satisfy clients |
130 | |||
| 93 |
CertiNergycertinergy.com
Mobilizes for and implements energy saving actions for all energy consumers, from individuals to large companies, funded by energy suppliers through energy saving certificates. |
129 | |||
| 94 |
Groupe Rouge Vifgrouperougevif.fr
Advises on communication strategies, public and private territorial projects, and organizes events, focusing on human recognition and shared understanding across channels. |
114 | |||
| 95 |
Actinvisionactinvision.com
Provides data analysis, visualization, and advanced analytics solutions, enabling data-driven culture and strategies for organizations, serving over 300 customers. |
111 | |||
| 96 |
Myonexmyonex.com
Global pharmaceutical packaging and logistics partner, specializing in clinical trial supply management, cold-chain solutions for ATMPs, and expert packaging services for health products |
106 | |||
| 97 | 105 | ||||
| 98 |
CEHTRAcehtra.com
A global leader in environmental and human toxicology, offering regulatory compliance services, innovative solutions, and strategic consulting for chemical safety |
105 | |||
| 99 |
Lorex
Accounting and audit firm located in Montigny-lès-Metz providing expertise in accounting and statutory auditing services |
101 | |||
| 100 | 100 | ||||
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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.
More company lists in Grand Est
- The largest companies in Grand Est 5,706
- Multinational companies in Grand Est 788
- Companies with in-house R&D in Grand Est 640
- Manufacturers in Grand Est 573
- Retail chains in Grand Est 530
- Public sector organisations in Grand Est 427
- Family-owned companies in Grand Est 365
- Hardware manufacturers in Grand Est 342
- Distributors and wholesalers in Grand Est 307
- Critical infrastructure operators in Grand Est 259
- IT services companies in Grand Est 248
- SaaS companies in Grand Est 216
- Education providers in Grand Est 215
- IT Services and IT Consulting companies in Grand Est 213
- Software Development companies in Grand Est 211
- Healthcare providers in Grand Est 202
- Construction companies in Grand Est 196
- Contract manufacturers in Grand Est 192
- Retail companies in Grand Est 169
- Government Administration companies in Grand Est 168
- Industrial Machinery Manufacturing companies in Grand Est 166
- Consulting firms in Grand Est 165
- Food and beverage companies in Grand Est 161
- Wholesale companies in Grand Est 159
The same list elsewhere in France
- Professional services firms in France 6,610
- Professional services firms in Île-de-France 3,377
- 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 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 the Ille-et-Vilaine department 94
- 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