# Top 30 data and analytics companies in the Hauts-de-Seine department

Tamtam tracks 143 data and analytics companies headquartered in the Hauts-de-Seine department. This list ranks the 30 largest by number of employees on LinkedIn, led by Coface, Cegedim and Insee. Their median headcount is 530. Half of them were founded in 1994 or later. The most common headquarters are Boulogne-Billancourt (9), Courbevoie (4) and Levallois-Perret (3).

These data and analytics companies in Hauts-de-Seine are primarily mid-sized to large firms, with a strong presence in IT services and software development. Coface manages credit risk, Cegedim provides technology for healthcare data flow, Insee produces French economic statistics, and MEDIAPOST uses data for targeted advertising distribution. Axians France supports digital infrastructure, and Vusion develops AI-powered digitalization for physical commerce.

A notable pattern among these companies is the concentration of headquarters in specific cities within Hauts-de-Seine. Levallois-Perret, Nanterre, and Boulogne-Billancourt each host multiple significant data and analytics firms, indicating a geographic clustering of this sector within the department. The founding dates span from early 20th century establishments to more recent companies.

🇫🇷 Hauts-de-Seine · 30 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Coface](https://www.tamtam.ai/c/coface) (coface.com)<br>Manages credit risk for companies, supporting their growth by offering trade credit insurance, business information, debt collection, and factoring solutions. | Insurance | 🇫🇷 Bois-Colombes | 6,948 | 1946 |
| 2 | [Cegedim](https://www.tamtam.ai/c/cegedim) (cegedim.com)<br>Technology and services for digital data flow management in healthcare ecosystems and B2B, plus business software publishing for healthcare and insurance professionals. | IT Services and IT Consulting | 🇫🇷 Boulogne-Billancourt | 4,103 | 1969 |
| 3 | [Insee](https://www.tamtam.ai/c/insee) (insee.fr)<br>Collects information, produces statistics on French economy, population, society. Conducts census, surveys, manages national registries, and provides data freely to the public. | Government Administration | 🇫🇷 Montrouge | 2,900 | 1946 |
| 4 | [MEDIAPOST](https://www.tamtam.ai/c/mediapost-montrouge) (mediaposte.fr)<br>Targeted distribution of advertising mail and proximity communication solutions using geographical and behavioral data to support client acquisition and loyalty across France. | Advertising Services | 🇫🇷 Montrouge | 1,306 |  |
| 5 | [Axians France](https://www.tamtam.ai/c/axians-france) (axians.fr)<br>Supports clients with digital infrastructure and solutions, covering applications, data, networks, cloud, telecom, and cybersecurity through consulting, design, integration, and services. | IT Services and IT Consulting | 🇫🇷 Nanterre | 1,137 | 1999 |
| 6 | [Vusion](https://www.tamtam.ai/c/vusion) (vusion.com)<br>Develops AI-powered digitalization solutions for physical commerce, transforming stores into intelligent environments, improving operations, enabling e-commerce, and activating in-store retail media. | Software Development | 🇫🇷 Nanterre | 1,113 | 1992 |
| 7 | [ACENSI](https://www.tamtam.ai/c/acensi) (acensi.fr)<br>Supports clients through IS transformation projects, including digital transformation, Big Data, mobility, cloud, security, and cybersecurity from design to implementation. | IT Services and IT Consulting | 🇫🇷 Courbevoie | 848 | 2003 |
| 8 | [Micropole](https://www.tamtam.ai/c/micropole) (micropole.com)<br>An international consulting group specializing in corporate transformation through data, offering expertise in 'Data Driven' Strategy, Cloud Acceleration, and Digital Business solutions | IT Services and IT Consulting | 🇫🇷 Levallois-Perret | 803 | 1987 |
| 9 | [Groupe INTM](https://www.tamtam.ai/c/groupe-intm) (intm.com)<br>Provides digital engineering consulting and services, helping clients understand needs and implement solutions for strategic objectives through technical, organizational, and financial support. | IT Services and IT Consulting | 🇫🇷 Levallois-Perret | 765 | 2004 |
| 10 | [Jems Group](https://www.tamtam.ai/c/jems-group) (jems-group.com)<br>Create, manage, and operate customer data patrimony, industrializing use cases and innovative services based on AI or pure analytics for key accounts. | IT Services and IT Consulting | 🇫🇷 Levallois-Perret | 717 | 2002 |
| 11 | [Sixense Group](https://www.tamtam.ai/c/sixense-group) (sixense-group.com)<br>Specializing in infrastructure monitoring and consulting, Sixense optimizes maintenance and operation through engineering services, data management, and digital solutions globally | Construction | 🇫🇷 Rueil-Malmaison | 711 | 2016 |
| 12 | [A2MAC1 - Decode the future](https://www.tamtam.ai/c/a2mac1-decode-the-future) (a2mac1.com)<br>Provides comprehensive data analysis, technical insights, and competitive analysis to automotive and mobility businesses for informed decisions, innovation, and sustainable growth. | Software Development | 🇫🇷 Boulogne-Billancourt | 623 | 1997 |
| 13 | [SES-imagotag](https://www.tamtam.ai/c/ses-imagotag) (ses-imagotag.com)<br>Provides smart digital labels and an IoT platform to retailers, connecting physical stores, automating processes, improving efficiency, and serving customers. | Software Development | 🇫🇷 Nanterre | 560 | 1992 |
| 14 | [ChapsVision](https://www.tamtam.ai/c/chapsvision) (chapsvision.com)<br>French software company specializing in data intelligence and AI, providing industry-specific solutions for diverse sectors, supporting digital transformation globally. | Software Development | 🇫🇷 Suresnes | 558 | 2019 |
| 15 | [VIDAL](https://www.tamtam.ai/c/vidal) (vidalfrance.com)<br>A company specializing in health product information and prescription safety solutions, reaching medical professionals across France and internationally | IT Services and IT Consulting | 🇫🇷 Issy-les-Moulineaux | 530 | 1914 |
| 16 | [Cegedim Business Services - Human Resources](https://www.tamtam.ai/c/cegedim-business-services-human-resources) (cegedim-business-services.com)<br>Specializes in outsourced payroll and HR services with a modular SaaS platform covering payroll, personnel management, time tracking, and HR analytics. | IT Services and IT Consulting | 🇫🇷 Boulogne-Billancourt | 499 | 1985 |
| 17 | [Equans Digital](https://www.tamtam.ai/c/equans-digital) (equans-digital.com)<br>Connects operational and information technology systems to structure infrastructure data, improving energy efficiency, asset availability, and security through cybersecurity and applied artificial intelligence. | IT Services and IT Consulting | 🇫🇷 Courbevoie | 499 |  |
| 18 | [Sidetrade](https://www.tamtam.ai/c/sidetrade) (sidetrade.com)<br>Provides agentic AI for finance teams, managing Order-to-Cash cycles including cash collection, application, dispute resolution, credit analysis, and risk using extensive B2B transaction data. | Software Development | 🇫🇷 Boulogne-Billancourt | 405 | 2000 |
| 19 | [Altares - Dun and Bradstreet](https://www.tamtam.ai/c/altares-dun-and-bradstreet) (altares.com)<br>Collects, aggregates, analyzes, enriches, and structures data globally, transforming information assets into operational economic performance, offering decision-making tools for companies. | Information Services | 🇫🇷 Puteaux | 333 | 1949 |
| 20 | [SOFIP](https://www.tamtam.ai/c/sofip) (sofip-sa.fr)<br>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 | 🇫🇷 Neuilly-sur-Seine | 330 | 1982 |
| 21 | [Lincoln France](https://www.tamtam.ai/c/lincoln-france) (lincoln.fr)<br>Offers data science and Modern BI expertise, consulting, and support for decision-making projects, utilizing predictive analysis and machine learning algorithms. | IT Services and IT Consulting | 🇫🇷 Boulogne-Billancourt | 316 | 1990 |
| 22 | [ARISTID Retail Technology](https://www.tamtam.ai/c/aristid-retail-technology) (aristid.com)<br>French technology company, digital transformation leader for retail, providing a promotional data-centric platform for commercial operations, enabling localized and personalized content for shoppers. | IT Services and IT Consulting | 🇫🇷 Clichy | 315 |  |
| 23 | [APGAR](https://www.tamtam.ai/c/apgar) (apgar-group.com)<br>Provides global consultancy and managed services in data management and AI, supporting diverse industries with sustainable, innovative solutions. | Business Consulting and Services | 🇫🇷 Neuilly-sur-Seine | 278 | 2013 |
| 24 | [ESRI France](https://www.tamtam.ai/c/esri-france) (esrifrance.fr)<br>The company designs and develops the most comprehensive and widely used GIS range in the world, essential tools for businesses and organizations | Software Development | 🇫🇷 Meudon | 268 | 1988 |
| 25 | [PJMS](https://www.tamtam.ai/c/pjms) (solocal.com)<br>Specializes in multichannel marketing data solutions, ensuring data quality, business growth, ROI control, and lead generation for diverse clients. | Advertising Services | 🇫🇷 Boulogne-Billancourt | 266 |  |
| 26 | [Cloudity](https://www.tamtam.ai/c/cloudity) (cloudity.com)<br>International digital company specializing in Salesforce consulting, digital transformation, sales increase, customer service improvement, and process automation solutions. | Software Development | 🇫🇷 Courbevoie | 256 | 2014 |
| 27 | [Catalina Marketing France](https://www.tamtam.ai/c/catalina-marketing-france) (catalinamarketing.fr)<br>Catalina France, part of Catalina Marketing Corporation, specializes in personalized communication and relationship marketing leveraging real consumer purchase behavior data globally | Advertising Services | 🇫🇷 Boulogne-Billancourt | 255 | 1994 |
| 28 | [Sunstice](https://www.tamtam.ai/c/sunstice) (sunstice.com)<br>Leading software vendor providing advanced Supply Chain Planning and Trade Promotion Management solutions to help companies optimize their supply chains and drive growth | Software Development | 🇫🇷 Boulogne-Billancourt | 230 | 1994 |
| 29 | [Keyrus Life Science](https://www.tamtam.ai/c/keyrus-life-science) (keyruslifescience.com)<br>Optimizes clinical trials, real-world evidence projects, and clinical R&D for pharmaceutical, biotech, and medtech industries, leveraging data and digital solutions. | Pharmaceutical Manufacturing | 🇫🇷 Boulogne-Billancourt | 220 | 1998 |
| 30 | [autobiz France](https://www.tamtam.ai/c/autobiz-france) (autobiz.com)<br>Provides detailed analysis and IT solutions for new and used car markets across Europe, serving OEMs, dealers, and remarketing specialists. | Internet Publishing | 🇫🇷 Courbevoie | 217 | 2004 |

## 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.

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## The same list elsewhere

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Source: https://www.tamtam.ai/l/data-analytics-companies-hauts-de-seine