Tamtam Start free

Professional services firms headquartered in Neuilly-sur-Seine

Tamtam tracks 79 professional services firms headquartered in Neuilly-sur-Seine. This list ranks the 30 largest by number of employees on LinkedIn, led by Altran, Vulcain Engineering Group and PwC France. Their median headcount is 330. Half of them were founded in 2006 or later.

馃嚝馃嚪 Neuilly-sur-Seine30 companiesUpdated Nov 13, 2026

This selection of professional services firms in Neuilly-sur-Seine includes large consulting and IT services companies. Altran, now Capgemini Engineering, provides engineering services, while PwC France offers consulting, audit, legal, and tax expertise. Scalian focuses on digital transformation and operations performance, and Grant-Thornton France provides audit and financial advisory services.

Several companies specialize in IT services and digital transformation, such as Infotel, SFEIR, and AMEXIO. The list also features a law firm, CMS Francis Lefebvre Avocats, which offers international legal and tax advisory services. Many of these firms were founded between the mid-1980s and the late 2000s, indicating a period of growth in the professional services sector.

#CompanyIndustryHeadquarters EmployeesFounded
1
Altrancapgemini-engineering.com

Altran, now Capgemini Engineering, offers engineering services Follow them on LinkedIn for updates and insights

IT Services and IT Consulting 馃嚝馃嚪 Neuilly-sur-Seine 11,652 n/a
2
Vulcain Engineering Groupvulcain-eng.com

Provides engineering consulting and project solutions for energy and environmental sectors, delivering technical assistance, expertise, and project management globally.

Business Consulting and Services 馃嚝馃嚪 Neuilly-sur-Seine 5,234 2005
3
PwC Francepwc.fr

Offers consulting, audit, legal, and tax expertise, blending technology with multidisciplinary knowledge to accelerate sustainable business transformation for organizations.

Business Consulting and Services 馃嚝馃嚪 Neuilly-sur-Seine 4,109 n/a
4
Scalianscalian.com

A global company founded in 1989 with 3 business lines focusing on Digital Transformation, Digital Systems, and Operations Performance across various countries

Business Consulting and Services 馃嚝馃嚪 Neuilly-sur-Seine 4,098 1989
5
Grant-Thornton Francegrantthornton.fr

Provides audit, financial advisory, operational consulting, legal and tax advice, and sustainable transformation services to French businesses.

Financial Services 馃嚝馃嚪 Neuilly-sur-Seine 2,342 1964
6
Infotelinfotel.com

Provides IT and digital transformation consulting for large enterprises, focusing on strategic design, technological expertise, and agile development, from conception to implementation.

IT Services and IT Consulting 馃嚝馃嚪 Neuilly-sur-Seine 1,894 1979
7
SFEIRsfeir.com

Provides expert application development across web, mobile, cloud, data, and IoT, guiding clients through digital transformation with innovative products.

IT Services and IT Consulting 馃嚝馃嚪 Neuilly-sur-Seine 1,083 1985
8
CMS Francis Lefebvre Avocatscms.law

Provides specialized international legal and tax advisory services covering corporate, employment, and commercial law for major global corporations across diverse industrial sectors.

Law Practice 馃嚝馃嚪 Neuilly-sur-Seine 958 1925
9
ACT-ON GROUPactongroup.com

Consulting and services company specializing in human resources, data, and technology to support organizational, digital, and cultural transformation projects.

Business Consulting and Services 馃嚝馃嚪 Neuilly-sur-Seine 593 2001
10
Herv茅 Schauer Consultants (HSC)hs2.fr

Provides information security consulting, audits, penetration tests, risk management, and training services to secure diverse infrastructures and systems.

Computer and Network Security 馃嚝馃嚪 Neuilly-sur-Seine 500 1989
11
AMEXIOamexiogroup.com

Digital transformation partner specializing in Enterprise Content Management, Customer Communication Management, and Customer Experience Management, prioritizing human excellence for successful outcomes

IT Services and IT Consulting 馃嚝馃嚪 Neuilly-sur-Seine 477 2006
12
RAINBOW PARTNERS GROUPrainbowpartners.com

Multispecialist consulting group with global presence, offering expertise in finance, industry, data, AI, blockchain, cybersecurity, and digital transformation for large clients.

Business Consulting and Services 馃嚝馃嚪 Neuilly-sur-Seine 445 2007
13
QUANTEAM (RAINBOW PARTNERS Group)quanteam.fr

Supports corporate clients across the Front-to-Back chain, in evolving their business activities and transformation projects, with business and IT competence.

IT Services and IT Consulting 馃嚝馃嚪 Neuilly-sur-Seine 368 2007
14
SMRsmr-bc.com

Specialized consulting firm providing qualified talent, recruitment assistance services, and consultant placements

Business Consulting and Services 馃嚝馃嚪 Neuilly-sur-Seine 368 n/a
15
SOFIPsofip-sa.fr

Commercial strategy development, brand promotion management, and consumer engagement services for pharmaceutical, parapharmaceutical, and cosmetic industries to optimize product distribution and sales growth.

Business Consulting and Services 馃嚝馃嚪 Neuilly-sur-Seine 330 1982

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.

Get more companies, free
16
INFOGENEinfogene.fr

Specializes in digital solutions, business intelligence, and engineering services, including R&D support, software selection, and application maintenance for various industries.

IT Services and IT Consulting 馃嚝馃嚪 Neuilly-sur-Seine 327 2013
17
APGARapgar-group.com

Provides global consultancy and managed services in data management and AI, supporting diverse industries with sustainable, innovative solutions.

Business Consulting and Services 馃嚝馃嚪 Neuilly-sur-Seine 278 2013
18
TechSelltechsell.fr

Specializes in recruiting, training, and managing sales teams to enhance brand presence and shopper experience across France retail environments.

Advertising Services 馃嚝馃嚪 Neuilly-sur-Seine 261 2006
19
GroupeVital-Francegroupe-vital.com

The French independent IT consultancy group specializes in user support, IT production, and services spanning from Mainframe to Cloud environments nationwide

IT Services and IT Consulting 馃嚝馃嚪 Neuilly-sur-Seine 243 1998
20
Gravitaslinedata.com

A company specializing in financial software solutions, recently acquired by Linedata Visit Linedata on Linkedin or their website for updates

IT Services and IT Consulting 馃嚝馃嚪 Neuilly-sur-Seine 184 1998
21
Pharmafield Groupepharmafield.fr

Comprehensive services optimizing healthcare industry performance through medical promotion, sales networks, outsourcing solutions, administrative management, and strategic product environment analysis.

Pharmaceutical Manufacturing 馃嚝馃嚪 Neuilly-sur-Seine 164 2013
22
Olifan Groupolifangroup.com

French leader in wealth management, helping individuals and leaders structure, optimize, and transfer assets. Supports with retirement, vulnerability, and investment strategies.

Financial Services 馃嚝馃嚪 Neuilly-sur-Seine 158 2014
23
LVMH Client Services

remote client relationship management, service incubator, center of expertise, strategic consulting, digital innovation, client service transformation

Retail Luxury Goods and Jewelry 馃嚝馃嚪 Neuilly-sur-Seine 145 2017
24
PwC Consulting - People & Organizationpwc.fr

Specializing in consulting and audit services, the company focuses on human-centered transformation projects, integrating operational performance with human development for successful business outcomes

Business Consulting and Services 馃嚝馃嚪 Neuilly-sur-Seine 145 1970
25
PRICEWATERHOUSECOOPERS ADVISORYpwc.com

An innovative community offering solutions through human ingenuity, technology, and products to enhance trust and achieve lasting results for organizations

Business Consulting and Services 馃嚝馃嚪 Neuilly-sur-Seine 136 n/a
26
KYC Consultingkyc-consulting.com

Management consulting firm specializing in delivering projects for financial institutions, with a team of experienced consultants offering high-quality services and added value in a constantly changing environment

Business Consulting and Services 馃嚝馃嚪 Neuilly-sur-Seine 134 2010
27
Openvalueopenvalue.co

Openvalue is a consulting and integration firm specializing in Data & Artificial Intelligence, offering services in Machine Learning, NLP, UX design, and application development

Professional Services 馃嚝馃嚪 Neuilly-sur-Seine 133 2014
28
CARBON ITcarbon-it.fr

Consulting and IT expertise in Artificial Intelligence and Software Engineering. Structuring and industrializing digital ambitions combining technical excellence, methodological rigor, and business value creation.

IT Services and IT Consulting 馃嚝馃嚪 Neuilly-sur-Seine 121 2013
29
BOCASAYbocasay.com

Develops web and application solutions, offering dedicated teams and fixed-price projects for digital needs, specializing in design, development, maintenance, and training.

IT Services and IT Consulting 馃嚝馃嚪 Neuilly-sur-Seine 110 2012
30
Pharmasyspharmasys.fr

A consultant company specializing in customized services for healthcare industry, focusing on Engineering, Quality, Data Integrity, and GxP Compliance Offering expertise in regulatory compliance and system validation

IT Services and IT Consulting 馃嚝馃嚪 Neuilly-sur-Seine 90 2006

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.

Build your own list, free

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 Neuilly-sur-Seine

The same list elsewhere in France

The same list elsewhere