# The 25 largest companies in Pontoise
Tamtam tracks 25 companies headquartered in Pontoise. This list ranks all of them by number of employees on LinkedIn, led by ESIEE-IT, ESPERER 95 and GROUPE JALLU-BERTHIER. Their median headcount is 8. Half of them were founded in 2001 or later.
The companies in Pontoise largely represent public services, education, and automotive sales. Among the larger entities, ESIEE-IT specializes in higher education, ESPERER 95 focuses on social inclusion, and GROUPE JALLU-BERTHIER operates numerous car dealerships. The municipality itself, Ville de Pontoise, is also a significant employer.
While there are established organizations like Saint Martin de France, founded in 1929, the list also includes more recent ventures such as VNB-IT, an IT services company established in 2022. This mix suggests a local economy that balances long-standing institutions with newer enterprises, particularly in sectors like education and automotive retail.
馃嚝馃嚪 Pontoise 路 25 companies 路 Updated Nov 12, 2026
| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [ESIEE-IT](https://www.tamtam.ai/c/esiee-it) (esiee-it.fr)
Specialized education offering customized training programs in management, IT, HR, and quality management from post-Bac to professional levels. | Higher Education | 馃嚝馃嚪 Pontoise | 161 | 2013 |
| 2 | [ESPERER 95](https://www.tamtam.ai/c/esperer-95) (esperer-95.org)
Advocacy for social inclusion, providing shelter, support, and assistance to vulnerable individuals facing economic, social, or health challenges. | Civic and Social Organizations | 馃嚝馃嚪 Pontoise | 159 | 1979 |
| 3 | [GROUPE JALLU-BERTHIER](https://www.tamtam.ai/c/groupe-jallu-berthier) (jallu-berthier.com)
Operates numerous car dealerships across several regions, offering sales and innovative services for various automotive brands, prioritizing customer satisfaction and team engagement. | Retail Motor Vehicles | 馃嚝馃嚪 Pontoise | 131 | 1992 |
| 4 | [Ville de Pontoise](https://www.tamtam.ai/c/ville-de-pontoise) (ville-pontoise.fr)
A historical city with over 32,000 residents, located near Paris, at the heart of the Cergy-Pontoise urban area Visit their website for job opportunities | Government Administration | 馃嚝馃嚪 Pontoise | 104 | |
| 5 | [GOPARK](https://www.tamtam.ai/c/gopark) (gopark.fr)
GOPARK offers two exceptional locations in Cergy-Pontoise, France for indoor and outdoor activities such as paintball, trampolining, indoor soccer, and event organization | Amusement Parks and Arcades | 馃嚝馃嚪 Pontoise | 59 | 1999 |
| 6 | [Saint Martin de France](https://www.tamtam.ai/c/saint-martin-de-france) (saintmartindefrance.fr)
A prestigious boarding school in France, offering unique education with a French cultural environment, international outlook, and personalized support for students | Education Administration Programs | 馃嚝馃嚪 Pontoise | 49 | 1929 |
| 7 | [Weidm眉ller France](https://www.tamtam.ai/c/weidmuller-france) (weidmuller.fr)
The company specializes in industrial connectivity, automation, and digitalization, offering tailored solutions to optimize productivity and address industry transformation challenges globally | Automation Machinery Manufacturing | 馃嚝馃嚪 Pontoise | 46 | 1968 |
| 8 | [Audi Valodis Pontoise](https://www.tamtam.ai/c/audi-valodis-pontoise) (audi-valodis-pontoise.fr)
Offers new and used Audi vehicles, covering various models and motorizations. Provides mechanical and bodywork services, along with spare parts and accessories. | Motor Vehicle Manufacturing | 馃嚝馃嚪 Pontoise | 43 | 2001 |
| 9 | [VNB-IT](https://www.tamtam.ai/c/vnb-it) (vnb-it.fr)
Delivering specialized maintenance, network security installation, and professional surveillance systems alongside comprehensive development of web applications, mobile apps, and business websites for digital growth. | IT Services and IT Consulting | 馃嚝馃嚪 Pontoise | 33 | 2022 |
| 10 | [EVODROIT - Avocats](https://www.tamtam.ai/c/evodroit-avocats) (evodroit.fr)
EVODROIT law firm provides daily legal support in France in areas including real estate, labor, public, business, and personal law | Law Practice | 馃嚝馃嚪 Pontoise | 17 | 1922 |
| 11 | [KYLIA Immobilier](https://www.tamtam.ai/c/kylia-immobilier) (kylia-immo.com)
A new, innovative real estate brand with a unique "Agent-focused" business model, aiming to build profitable and sustainable careers for real estate agents | Leasing Non-residential Real Estate | 馃嚝馃嚪 Pontoise | 16 | 2010 |
| 12 | [Programmez](https://www.tamtam.ai/c/programmez) (programmez.com)
A press and book publishing company founded in 2013, specializing in a magazine for developers and technology and a website for cloud computing | Newspaper Publishing | 馃嚝馃嚪 Pontoise | 11 | 1998 |
| 13 | [Cabinet Caty Richard](https://www.tamtam.ai/c/cabinet-caty-richard) (cabinet-caty-richard.fr)
Established in 1995, a team of four experienced lawyers specializing in criminal, family, civil, and labor law, offering personalized legal services and a broad network of partners | Law Practice | 馃嚝馃嚪 Pontoise | 8 | 1995 |
| 14 | [CJD 95](https://www.tamtam.ai/c/cjd-95) (cjd.net)
A community of socially responsible entrepreneurs striving to build sustainable and ethical businesses while promoting personal transformation and innovation | Civic and Social Organizations | 馃嚝馃嚪 Pontoise | 7 | 1938 |
| 15 | [Conseil Etudiant de Cergy-Pontoise](https://www.tamtam.ai/c/conseil-etudiant-de-cergy-pontoise) (conseiletudiantcecp.wixsite.com)
Student association bringing together all BDEs from higher education institutions in Cergy Pontoise Organizing fun, sports, and cultural events such as Campus Day, Campus Night, and more | Entertainment Providers | 馃嚝馃嚪 Pontoise | 4 | 2012 |
| 16 | [Nukon yiyi](https://www.tamtam.ai/c/nukon-yiyi) (nukonyiyigg.webflow.io)
Offers digital solutions, managerial expertise, and supports companies in their digital transformation to boost competitiveness and market access. | Business Consulting and Services | 馃嚝馃嚪 Pontoise | 4 | 2022 |
| 17 | [FEDARC AVOCATS](https://www.tamtam.ai/c/fedarc-avocats) (fedarc.com)
FEDARC is a law firm with experienced lawyers specialized in various legal areas, serving a diverse clientele including financial institutions, insurance companies, individuals, and businesses | Law Practice | 馃嚝馃嚪 Pontoise | 4 | 1989 |
| 18 | [CARM Avocats](https://www.tamtam.ai/c/carm-avocats) (carm-avocats.com)
CARM is a passionate and demanding legal partnership providing expert counseling and litigation support for businesses | Law Practice | 馃嚝馃嚪 Pontoise | 3 | 2023 |
| 19 | [CLEV Avocats](https://www.tamtam.ai/c/clev-avocats) (clevavocats.fr)
This firm, founded in 2024, provides legal counsel services in criminal law, labor law, and family law, comprising three associated partners. | Law Practice | 馃嚝馃嚪 Pontoise | 3 | 2024 |
| 20 | [BSC-Patrimoine](https://www.tamtam.ai/c/bsc-patrimoine) (bsc-patrimoine.fr)
This independent wealth management consulting firm offers personalized advice on estate planning, investments, taxes, retirement, and insurance, fostering long-term trust with clients | Insurance | 馃嚝馃嚪 Pontoise | 3 | 2014 |
| 21 | [2APVO Avocats](https://www.tamtam.ai/c/2apvo-avocats) (elcyavocats.fr)
Established in 2000, this law firm in PARIS and VERSAILLES specializes in providing comprehensive legal solutions for individuals and businesses nationwide | Law Practice | 馃嚝馃嚪 Pontoise | 3 | 2000 |
| 22 | [PARUELLE ET ASSOCIE](https://www.tamtam.ai/c/paruelle-et-associe) (avocat-paruelle-pontoise.fr)
A legal services company located in Pontoise, France, specializing in providing legal assistance and advice to clients in 脦le-de-France | Law Practice | 馃嚝馃嚪 Pontoise | 3 | |
| 23 | [Blog Cortex_sciences](https://www.tamtam.ai/c/blog-cortex-sciences) (le-cortex.com)
This company runs a blog dedicated to popular science, featuring content from scientists of various specialties and backgrounds | Online Audio and Video Media | 馃嚝馃嚪 Pontoise | 3 | 2020 |
| 24 | [VP AVOCATS](https://www.tamtam.ai/c/vp-avocats) (vp-avocats.fr)
With 15 years of experience, this law firm provides legal advice and representation in court, as well as assistance in notarial matters related to divorce, separation, inheritance, and asset division | Law Practice | 馃嚝馃嚪 Pontoise | 2 | 2017 |
| 25 | [Cabinet Aurore Bonavia - Propri茅t茅 intellectuelle](https://www.tamtam.ai/c/cabinet-aurore-bonavia-propriete-intellectuelle) (aurorebonavia-avocat.fr)
Legal services provider specializing in intellectual property, digital law, and business law Offers contract drafting and negotiation, trademark registration, GDPR compliance, and legal advice | Law Practice | 馃嚝馃嚪 Pontoise | 1 | 2015 |
## 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 12, 2026.
## The same list elsewhere in France
- [The largest companies in France](https://www.tamtam.ai/l/largest-companies-france) (90,812)
- [The largest companies in 脦le-de-France](https://www.tamtam.ai/l/largest-companies-ile-de-france) (36,142)
- [The largest companies in Auvergne-Rh么ne-Alpes](https://www.tamtam.ai/l/largest-companies-auvergne-rhone-alpes) (11,033)
- [The largest companies in Provence-Alpes-C么te d'Azur](https://www.tamtam.ai/l/largest-companies-provence-alpes-cote-dazur) (6,698)
- [The largest companies in Occitanie](https://www.tamtam.ai/l/largest-companies-occitanie) (5,767)
- [The largest companies in Grand Est](https://www.tamtam.ai/l/largest-companies-grand-est) (5,706)
- [The largest companies in Nouvelle-Aquitaine](https://www.tamtam.ai/l/largest-companies-nouvelle-aquitaine) (5,459)
- [The largest companies in the Hauts-de-Seine department](https://www.tamtam.ai/l/largest-companies-hauts-de-seine) (5,160)
- [The largest companies in the Rh么ne department](https://www.tamtam.ai/l/largest-companies-rhone) (4,813)
- [The largest companies in Hauts-de-France](https://www.tamtam.ai/l/largest-companies-hauts-de-france) (4,505)
- [The largest companies in Pays de la Loire](https://www.tamtam.ai/l/largest-companies-pays-de-la-loire) (4,266)
- [The largest companies in the Bouches-du-Rh么ne department](https://www.tamtam.ai/l/largest-companies-bouches-du-rhone) (3,317)
- [The largest companies in Brittany](https://www.tamtam.ai/l/largest-companies-brittany) (3,058)
- [The largest companies in the Nord department](https://www.tamtam.ai/l/largest-companies-nord) (2,806)
- [The largest companies in the Gironde department](https://www.tamtam.ai/l/largest-companies-gironde) (2,435)
- [The largest companies in the Haute-Garonne department](https://www.tamtam.ai/l/largest-companies-haute-garonne) (2,404)
- [The largest companies in Normandy](https://www.tamtam.ai/l/largest-companies-normandy) (2,380)
- [The largest companies in the Loire-Atlantique department](https://www.tamtam.ai/l/largest-companies-loire-atlantique) (2,044)
- [The largest companies in Bourgogne-Franche-Comt茅](https://www.tamtam.ai/l/largest-companies-bourgogne-franche-comte) (1,867)
- [The largest companies in Centre-Val de Loire](https://www.tamtam.ai/l/largest-companies-centre-val-de-loire) (1,701)
- [The largest companies in the Alpes-Maritimes department](https://www.tamtam.ai/l/largest-companies-alpes-maritimes) (1,538)
- [The largest companies in Paris](https://www.tamtam.ai/l/largest-companies-paris) (22,789)
- [The largest companies in Lyon](https://www.tamtam.ai/l/largest-companies-lyon) (2,679)
- [The largest companies in Toulouse](https://www.tamtam.ai/l/largest-companies-toulouse) (1,563)
## The same list elsewhere
- [The largest companies in the world](https://www.tamtam.ai/l/largest-companies-in-the-world) (415,122)
- [The largest companies in Europe](https://www.tamtam.ai/l/largest-companies-in-europe) (213,553)
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Source: https://www.tamtam.ai/l/largest-companies-pontoise