The companies in Neuilly-sur-Seine with in-house R&D are primarily mid-sized to large firms, with a notable presence in IT services, consulting, and personal care product manufacturing. Companies like Altran (now Capgemini Engineering) provide engineering services, while Parfums Christian Dior creates luxury fragrances. JCDecaux is a global leader in outdoor advertising, and Suntory Beverage & Food France produces fruit beverages.
A significant cluster of these companies operates in the personal care and beauty sector, including Laboratoires Dermatologiques d'Uriage and Groupe Guinot - Mary Cohr, both specializing in skincare products. Many of these firms were founded between the 1930s and early 2000s, indicating a mix of established businesses and more recently formed enterprises.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Altrancapgemini-engineering.com
Altran, now Capgemini Engineering, offers engineering services Follow them on LinkedIn for updates and insights |
11,652 | |||
| 2 |
Parfums Christian Diordior.com
Creates luxury fragrances and cosmetics, upholding a heritage of innovation and global beauty through meticulous production and cultivation of talent. |
8,660 | |||
| 3 |
JCDecauxjcdecaux.com
Global leader in outdoor advertising, specializing in street furniture, transport advertising, and billboard displays worldwide. |
6,312 | |||
| 4 |
Orangina Suntory Francesuntorybfe.com
A company formerly known as Orangina Suntory France rebranded to Suntory Beverage & Food France in September 2020 Visit their LinkedIn page for more information |
723 | |||
| 5 |
Suntory Beverage & Food Francesuntorybeverageandfood-europe.com
French leader in fruit beverages, produces and innovates with iconic brands like Orangina and Oasis, promoting positive and sustainable practices. |
723 | |||
| 6 |
Square Managementsquare-management.com
Consulting firm specializing in strategy and organization, supporting transformation projects across multiple sectors with expert teams and research. |
696 | |||
| 7 |
Laboratoires Dermatologiques d'Uriageuriage.fr
French dermo-cosmetics laboratory, products sold in pharmacies and drugstores in France and over 80 countries, part of Puig group's dermo-cosmetics division. |
679 | |||
| 8 |
Groupe Guinot - Mary Cohrguinot.com
Global leader in professional beauty care, manufacturing advanced skincare products and providing specialized aesthetic treatments across seventeen thousand international beauty institutes and franchises. |
531 | |||
| 9 |
AMEXIOamexiogroup.com
Digital transformation partner specializing in Enterprise Content Management, Customer Communication Management, and Customer Experience Management, prioritizing human excellence for successful outcomes |
477 | |||
| 10 |
Christoflechristofle.com
A leading maison collaborates with designers to create contemporary pieces, blending heritage with modernity in stunning art de la table |
445 | |||
| 11 |
UNOWHYunowhy.com
A French company creating digital products like the QOOQ culinary pad and SQOOL e-education solution, with a focus on innovative technologies for schools |
218 | |||
| 12 |
Baracoda Groupbaracoda.com
A global leader in healthtech with offices in New York, Paris, and Shanghai, focusing on improving health through innovative technology solutions |
181 | |||
| 13 |
ILLUIN Technologyilluin.tech
Specialists in scientific, technological, Design Thinking, and UX, driving innovation and digital transformation by leveraging AI and user-centric approaches in agile, tech-driven solutions |
162 | |||
| 14 |
Pam Buildingpambuilding.com
Designs and manufactures high-quality cast iron drainage systems for residential, commercial, and engineering structures with a focus on sustainability and innovation |
95 | |||
| 15 |
Reversocontext.reverso.net
Provides AI-based language tools including translation, dictionaries, spell-checking, and language learning for individuals and large corporations worldwide in multiple languages |
93 | |||
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 | 79 | ||||
| 17 | 58 | ||||
| 18 |
Gatlinggatling.io
This company offers load testing solutions for websites and web apps to ensure optimal performance, prevent crashes, and maximize user experience |
46 | |||
| 19 |
LES CAUSANTESlescausantes.com
A sustainable growth marketing group with international presence, using agile methods and social media to boost customer growth and support startups to major brands |
43 | |||
| 20 |
TAIGAtaiga-cm.com
Provides SaaS solutions for cash forecasting, working capital improvement, and sureties management with multi-currency, multi-subsidiary support and personalized operational assistance. |
29 | |||
| 21 |
Institut des MICIinstitutdesmici.fr
Provides comprehensive medical, surgical, and paramedical care for inflammatory bowel diseases and digestive tract conditions, alongside extensive research to advance treatments and knowledge. |
23 | |||
| 22 | 21 | ||||
| 23 | 15 | ||||
| 24 |
Novagen Conseilbit.ly
Specializes in AI and data expertise, providing consulting and R&D to optimize clients' data assets for marketing, finance, and performance improvements. |
15 | |||
| 25 |
SIGMA PLUSsigmaplus.fr
Established in 1979, the company initially focused on software simulation modeling By 1998, it expanded to offer information analysis and processing services in various industries |
15 | |||
| 26 |
RCS Europercseurope.fr
Provides broadcast software, tools, expertise, and real-time audio recognition technology to radio stations, TV channels, and internet broadcasters worldwide. |
13 | |||
| 27 |
Userwareuserware.dev
A company founded in 2007 offers an open-source framework, OpenSilver, to salvage legacy Silverlight applications with pixel-perfect results and comprehensive migration services |
13 | |||
| 28 |
LYSOGENElysogene.com
A biopharmaceutical company specializing in gene therapy for children with neurodegenerative lysosomal storage disorders, founded by a mother determined to improve patients' lives |
11 | |||
| 29 |
MotorK Francemotork.ai
Provides SaaS platform with digital solutions for automotive manufacturers, dealers, and service centers to improve sales, marketing, and customer experience. |
9 | |||
| 30 |
Humanscale Francehumanscale.com
A global leader in ergonomic design and manufacturing, creating innovative products to improve health, comfort, and productivity in the workplace |
3 | |||
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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 14, 2026.
More company lists in Neuilly-sur-Seine
- The largest companies in Neuilly-sur-Seine 447
- Multinational companies in Neuilly-sur-Seine 109
- IT services companies in Neuilly-sur-Seine 87
- Professional services firms in Neuilly-sur-Seine 79
- IT Services and IT Consulting companies in Neuilly-sur-Seine 76
- Consulting firms in Neuilly-sur-Seine 73
- Business Consulting and Services companies in Neuilly-sur-Seine 48
- Advertising Services companies in Neuilly-sur-Seine 37
- Marketing and communications agencies in Neuilly-sur-Seine 33
- SaaS companies in Neuilly-sur-Seine 31
- Recruitment and staffing agencies in Neuilly-sur-Seine 26
- Software Development companies in Neuilly-sur-Seine 26
The same list elsewhere in France
- Companies with in-house R&D in France 8,747
- Companies with in-house R&D in 脦le-de-France 2,695
- Companies with in-house R&D in Auvergne-Rh么ne-Alpes 1,459
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- Companies with in-house R&D in Provence-Alpes-C么te d'Azur 612
- Companies with in-house R&D in Nouvelle-Aquitaine 566
- Companies with in-house R&D in the Hauts-de-Seine department 510
- Companies with in-house R&D in the Rh么ne department 509
- Companies with in-house R&D in Pays de la Loire 480
- Companies with in-house R&D in Hauts-de-France 410
- Companies with in-house R&D in Brittany 366
- Companies with in-house R&D in the Haute-Garonne department 323
- Companies with in-house R&D in the Bouches-du-Rh么ne department 320
- Companies with in-house R&D in the Is猫re department 304
- Companies with in-house R&D in Bourgogne-Franche-Comt茅 261
- Companies with in-house R&D in the Nord department 237
- Companies with in-house R&D in Normandy 227
- Companies with in-house R&D in the Gironde department 225
- Companies with in-house R&D in the Loire-Atlantique department 207
- Companies with in-house R&D in the Essonne department 198
- Companies with in-house R&D in Centre-Val de Loire 195
- Companies with in-house R&D in Paris 1,249
- Companies with in-house R&D in Lyon 192