# The 30 largest IT services companies in the Isère department

Tamtam tracks 75 IT services companies headquartered in the Isère department. This list ranks the 30 largest by number of employees on LinkedIn, led by Tessi, HARDIS GROUP and KAIZEN Solutions (KZS). Their median headcount is 85. Half of them were founded in 2000 or later. The most common headquarters are Grenoble (6), Montbonnot-Saint-Martin (6) and Meylan (4).

The Isère department hosts a concentration of IT services companies, ranging from large firms to mid-sized enterprises. Tessi, with 3960 employees, specializes in customer relations, payments, and document process digitalization. HARDIS GROUP (1015 employees) offers IT consulting, Salesforce expertise, and logistics software. KAIZEN Solutions (281 employees) develops customized software for critical systems, while STEP UP (150 employees) matches consultants with technical project requirements. A common theme among these companies is the focus on digital transformation and specialized software solutions.

Many of these companies are headquartered in Grenoble, Montbonnot-Saint-Martin, and Meylan, indicating a geographical cluster within the department. The founding dates span several decades, from Tessi in 1971 to Groupe SINCRONE in 2020, showing both established players and newer entrants in the IT sector.

🇫🇷 Isère · 30 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Tessi](https://www.tamtam.ai/c/tessi) (tessi.eu)<br>Management of customer relations, payments, and document processes through digitalization and business process outsourcing solutions, ensuring information security for businesses. | IT Services and IT Consulting | 🇫🇷 Grenoble | 3,960 | 1971 |
| 2 | [HARDIS GROUP](https://www.tamtam.ai/c/hardis-group) (hardis-group.com)<br>consulting and IT services company, a Salesforce pure player, and vendor of the Reflex logistics software suite for retail and supply chain transformation. | IT Services and IT Consulting | 🇫🇷 Seyssinet-Pariset | 1,015 | 1984 |
| 3 | [KAIZEN Solutions (KZS)](https://www.tamtam.ai/c/kaizen-solutions-kzs) (kaizen-solutions.net)<br>Designs, develops, and maintains customized software solutions for complex and critical technical and industrial systems, from sensor to cloud. | IT Services and IT Consulting | 🇫🇷 Montbonnot-Saint-Martin | 281 | 2013 |
| 4 | [Automatique & Industrie](https://www.tamtam.ai/c/automatique-and-industrie) (automatique-industrie.com)<br>Provides automated solutions including SCADA, smart data, AI, energy monitoring, consulting, training, and maintenance for industrial and energy sectors. | Automation Machinery Manufacturing | 🇫🇷 Saint-Jean-de-Moirans | 174 | 1995 |
| 5 | [AMEG GROUP Ingénierie Industrielle](https://www.tamtam.ai/c/ameg-group-ingenierie-industrielle) (ameg-group.fr)<br>Offers industrial engineering consulting and technical assistance. Expertise in process, mechanical, electrical, and information system engineering across diverse industries. | Mechanical Or Industrial Engineering | 🇫🇷 Meylan | 157 | 1981 |
| 6 | [STEP UP](https://www.tamtam.ai/c/step-up) (stepup-conseil.com)<br>Matching hard and soft skills of consultants with technical project requirements, providing on-site assistance, study platforms, service centers, and fixed-price services. | IT Services and IT Consulting | 🇫🇷 Eybens | 150 | 2014 |
| 7 | [BASSETTI Group](https://www.tamtam.ai/c/bassetti-group) (bassetti-group.com)<br>A global leader in IT and consulting services specializing in Technical Expertise Management® software, serving over 100,000 users worldwide | Software Development | 🇫🇷 Grenoble | 138 | 1992 |
| 8 | [Groupe SINCRONE](https://www.tamtam.ai/c/groupe-sincrone) (groupe-sincrone.fr)<br>Provides IT and telecom services including cybersecurity, unified communications, and reconditioning of smartphones with social employment integration in France. | Telecommunications | 🇫🇷 Échirolles | 119 | 2020 |
| 9 | [Alma scop](https://www.tamtam.ai/c/alma-scop) (alma.fr)<br>Global leader in CAD/CAM software for sheet-metal working, cutting, and robotics Specializes in automatic nesting, optimizing material consumption, and R&D investment | Software Development | 🇫🇷 Saint-Martin-d'Hères | 101 | 1979 |
| 10 | [AIRRIA](https://www.tamtam.ai/c/airria) (airria.com)<br>Provides IT, IoT, and personnel placement services, offering tailored solutions from consultation, installation to maintenance for various clients in France and Europe. | Business Consulting and Services | 🇫🇷 Meylan | 98 | 2005 |
| 11 | [AXE INFORMATIQUE](https://www.tamtam.ai/c/axe-informatique) (axeinfo.fr)<br>A company specializing in implementing management software for SMEs, providing IT maintenance services, and deploying infrastructure solutions for 1500 clients | Software Development | 🇫🇷 Grenoble | 93 | 1989 |
| 12 | [Probayes](https://www.tamtam.ai/c/probayes) (probayes.com)<br>AI expert specializing in Machine Learning, Operational Research, Computer Vision, and NLP Custom AI solutions for various industries Immersive collaboration with clients for tailored solutions | IT Services and IT Consulting | 🇫🇷 Montbonnot-Saint-Martin | 93 | 2003 |
| 13 | [systhen](https://www.tamtam.ai/c/systhen) (systhen.com)<br>Provider of document capture and processing solutions, offering scanners, consulting, implementation, maintenance, and support for digital transformation. | IT Services and IT Consulting | 🇫🇷 Saint-Quentin-Fallavier | 88 | 1997 |
| 14 | [TickS](https://www.tamtam.ai/c/ticks) (ticks.fr)<br>TICKS offers comprehensive solutions for public transportation authorities, including hosting, administration, maintenance, data analysis, user support, revenue management, and more | IT Services and IT Consulting | 🇫🇷 Meylan | 87 | 2004 |
| 15 | [Ascanio](https://www.tamtam.ai/c/ascanio) (ascan.io)<br>Development and creation of innovative web products focused on delivering unique digital solutions and enhancing online user experiences. | Technology, Information and Internet | 🇫🇷 Montbonnot-Saint-Martin | 85 | 2004 |
| 16 | [Sincrone IT](https://www.tamtam.ai/c/sincrone-it) (sincrone-it.fr)<br>Expert technical services for digital transformation, specializing in unified communications, network infrastructure, and cybersecurity solutions for small to medium-sized business enterprises. | IT Services and IT Consulting | 🇫🇷 Échirolles | 73 |  |
| 17 | [BK Systèmes](https://www.tamtam.ai/c/bk-systemes) (bksystemes.fr)<br>editor and integrator of Speed WMS and Foxy APS software for logistics warehouse management, stock, and supply management tools. | Software Development | 🇫🇷 Vaulx-Milieu | 71 | 1998 |
| 18 | [Horizon Groupe \[Microstore, Iso Rhône-Alpes & Chryséis\]](https://www.tamtam.ai/c/horizon-groupe-microstore-iso-rhone-alpes-and-chryseis) (horizongroupe.fr)<br>Horizon groupe specializes in engineering and IT systems, offering customized virtual architectures, IT services, sourcing, and cloud computing solutions for businesses and local authorities | IT Services and IT Consulting | 🇫🇷 Montbonnot-Saint-Martin | 68 | 1984 |
| 19 | [GestionDeLaPaie.com](https://www.tamtam.ai/c/gestiondelapaie-com) (gestiondelapaie.com)<br>Payroll management expert providing software and services for small to medium-sized businesses Specialized teams ensure productivity and reliability in payroll, reporting, and HR functions | Human Resources Services | 🇫🇷 Saint-Jean-de-Moirans | 64 |  |
| 20 | [Hardis Tech Services](https://www.tamtam.ai/c/hardis-tech-services) (hardis-tech-services.com)<br>Consulting and IT services company specializing in digital transformation, data, AI, cybersecurity, cloud, and sustainable digital practices for industries. | IT Services and IT Consulting | 🇫🇷 Seyssinet-Pariset | 58 | 1984 |
| 21 | [Groupe Havana](https://www.tamtam.ai/c/groupe-havana) (havana-it.com)<br>Provides IT consulting services focusing on data, cloud, and AI to accelerate clients' digital transformation with innovation and expertise. | IT Services and IT Consulting | 🇫🇷 Montbonnot-Saint-Martin | 53 | 2012 |
| 22 | [EDT - Electronic Data Transfer](https://www.tamtam.ai/c/edt-electronic-data-transfer) (group-edt.fr)<br>Providing a comprehensive electronic communication platform and service delivery for businesses across Europe in on-premise, cloud, or hybrid environments. | IT Services and IT Consulting | 🇫🇷 Montbonnot-Saint-Martin | 51 | 1989 |
| 23 | [Auphys Technologie](https://www.tamtam.ai/c/auphys-technologie) (auphys.com)<br>Engineering services company specializing in energy networks, industrial design, audits, and training, supporting projects globally from Rhône-Alpes base. | Engineering Services | 🇫🇷 Seyssinet-Pariset | 49 | 2000 |
| 24 | [My Digital Buildings](https://www.tamtam.ai/c/my-digital-buildings) (mydigitalbuildings.com)<br>My Digital Buildings specializes in creating and managing digital replicas of buildings through a network of 3D scanning operators and a software platform | IT Services and IT Consulting | 🇫🇷 Meylan | 46 | 2019 |
| 25 | [GROUPE FOLIATECH](https://www.tamtam.ai/c/groupe-foliatech) (foliatechgroup.com)<br>Develops innovative software, including mobile applications, custom business software, and web tools, to digitalize and simplify company processes, accelerating digital transformation and increasing productivity. | Software Development | 🇫🇷 Vienne | 43 | 2014 |
| 26 | [Sogilis, Level Up together !](https://www.tamtam.ai/c/sogilis-level-up-together) (sogilis.com)<br>Sogilis is an innovation booster helping companies strengthen their market presence through technology, creating cutting-edge solutions and turning crazy ideas into reality | Software Development | 🇫🇷 Grenoble | 39 | 2008 |
| 27 | [Neovision](https://www.tamtam.ai/c/neovision-grenoble) (neovision.fr)<br>An AI expertise company making artificial intelligence accessible through tailored solutions and personalized support for all customers | IT Services and IT Consulting | 🇫🇷 Grenoble | 39 | 2014 |
| 28 | [Nsigma Junior-Entreprise](https://www.tamtam.ai/c/nsigma-junior-entreprise) (nsigma.fr)<br>Nsigma is a technology-driven Junior-Enterprise specializing in IT solutions, data science, artificial intelligence, web development, and applied mathematics services | IT Services and IT Consulting | 🇫🇷 Saint-Martin-d'Hères | 38 | 1980 |
| 29 | [Med'Art](https://www.tamtam.ai/c/med-art) (med-art.fr)<br>Custom software development for healthcare, social services, and public sector Accelerating recruitment, supporting business transformation, and ensuring project success Making your vision a reality | IT Services and IT Consulting | 🇫🇷 Grenoble | 35 | 2006 |
| 30 | [Altaë Groupe](https://www.tamtam.ai/c/altae-groupe) (altae.net)<br>Management and optimization of clients' IT assets with independent, objective advice focused on technical and financial improvements for SMEs. | Computer Networking Products | 🇫🇷 Moirans | 33 | 1999 |

## 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 11, 2026.

## More company lists in the Isère department

- [The largest companies in the Isère department](https://www.tamtam.ai/l/largest-companies-isere) (1,457)
- [Companies with in-house R&D in the Isère department](https://www.tamtam.ai/l/r-and-d-companies-isere) (304)
- [Manufacturers in the Isère department](https://www.tamtam.ai/l/manufacturers-isere) (178)
- [Multinational companies in the Isère department](https://www.tamtam.ai/l/multinational-companies-isere) (174)
- [Hardware manufacturers in the Isère department](https://www.tamtam.ai/l/hardware-companies-isere) (143)
- [Retail chains in the Isère department](https://www.tamtam.ai/l/retail-chains-isere) (100)
- [Software Development companies in the Isère department](https://www.tamtam.ai/l/software-development-companies-isere) (90)
- [Professional services firms in the Isère department](https://www.tamtam.ai/l/professional-services-firms-isere) (87)
- [Public sector organisations in the Isère department](https://www.tamtam.ai/l/public-sector-organisations-isere) (80)
- [Distributors and wholesalers in the Isère department](https://www.tamtam.ai/l/distributors-and-wholesalers-isere) (78)
- [SaaS companies in the Isère department](https://www.tamtam.ai/l/saas-companies-isere) (72)
- [Electronics and semiconductor companies in the Isère department](https://www.tamtam.ai/l/electronics-companies-isere) (70)
- [Contract manufacturers in the Isère department](https://www.tamtam.ai/l/contract-manufacturers-isere) (68)
- [IT Services and IT Consulting companies in the Isère department](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-isere) (68)
- [Family-owned companies in the Isère department](https://www.tamtam.ai/l/family-owned-companies-isere) (61)
- [Industrial Machinery Manufacturing companies in the Isère department](https://www.tamtam.ai/l/industrial-machinery-manufacturing-companies-isere) (58)
- [Consulting firms in the Isère department](https://www.tamtam.ai/l/consulting-firms-isere) (57)
- [Construction companies in the Isère department](https://www.tamtam.ai/l/construction-companies-isere) (52)
- [Pharmaceutical companies in the Isère department](https://www.tamtam.ai/l/pharmaceutical-companies-isere) (47)
- [Education providers in the Isère department](https://www.tamtam.ai/l/education-companies-isere) (46)
- [Medical device companies in the Isère department](https://www.tamtam.ai/l/medical-device-companies-isere) (43)
- [Critical infrastructure operators in the Isère department](https://www.tamtam.ai/l/critical-infrastructure-operators-isere) (41)
- [Energy companies in the Isère department](https://www.tamtam.ai/l/energy-companies-isere) (41)
- [Chemical companies in the Isère department](https://www.tamtam.ai/l/chemical-companies-isere) (40)

## The same list elsewhere in France

- [IT services companies in France](https://www.tamtam.ai/l/it-services-companies-france) (5,000)
- [IT services companies in Île-de-France](https://www.tamtam.ai/l/it-services-companies-ile-de-france) (2,624)
- [IT services companies in the Hauts-de-Seine department](https://www.tamtam.ai/l/it-services-companies-hauts-de-seine) (737)
- [IT services companies in Auvergne-Rhône-Alpes](https://www.tamtam.ai/l/it-services-companies-auvergne-rhone-alpes) (519)
- [IT services companies in the Rhône department](https://www.tamtam.ai/l/it-services-companies-rhone) (286)
- [IT services companies in Occitanie](https://www.tamtam.ai/l/it-services-companies-occitanie) (280)
- [IT services companies in Provence-Alpes-Côte d'Azur](https://www.tamtam.ai/l/it-services-companies-provence-alpes-cote-dazur) (268)
- [IT services companies in Grand Est](https://www.tamtam.ai/l/it-services-companies-grand-est) (248)
- [IT services companies in Hauts-de-France](https://www.tamtam.ai/l/it-services-companies-hauts-de-france) (236)
- [IT services companies in Pays de la Loire](https://www.tamtam.ai/l/it-services-companies-pays-de-la-loire) (205)
- [IT services companies in Nouvelle-Aquitaine](https://www.tamtam.ai/l/it-services-companies-nouvelle-aquitaine) (194)
- [IT services companies in the Nord department](https://www.tamtam.ai/l/it-services-companies-nord) (170)
- [IT services companies in the Haute-Garonne department](https://www.tamtam.ai/l/it-services-companies-haute-garonne) (158)
- [IT services companies in the Bouches-du-Rhône department](https://www.tamtam.ai/l/it-services-companies-bouches-du-rhone) (155)
- [IT services companies in the Loire-Atlantique department](https://www.tamtam.ai/l/it-services-companies-loire-atlantique) (130)
- [IT services companies in the Yvelines department](https://www.tamtam.ai/l/it-services-companies-yvelines) (121)
- [IT services companies in Brittany](https://www.tamtam.ai/l/it-services-companies-brittany) (113)
- [IT services companies in the Val-de-Marne department](https://www.tamtam.ai/l/it-services-companies-val-de-marne) (101)
- [IT services companies in the Gironde department](https://www.tamtam.ai/l/it-services-companies-gironde) (99)
- [IT services companies in Paris](https://www.tamtam.ai/l/it-services-companies-paris) (1,386)
- [IT services companies in Lyon](https://www.tamtam.ai/l/it-services-companies-lyon) (171)
- [IT services companies in Boulogne-Billancourt](https://www.tamtam.ai/l/it-services-companies-boulogne-billancourt) (125)
- [IT services companies in Toulouse](https://www.tamtam.ai/l/it-services-companies-toulouse) (119)
- [IT services companies in Levallois-Perret](https://www.tamtam.ai/l/it-services-companies-levallois-perret) (94)

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Source: https://www.tamtam.ai/l/it-services-companies-isere