# 30 leading IT services companies in the Bouches-du-Rhône department

Tamtam tracks 155 IT services companies headquartered in the Bouches-du-Rhône department. This list ranks the 30 largest by number of employees on LinkedIn, led by SNEF, ATEXIS and Klanik. Their median headcount is 120. Half of them were founded in 2003 or later. The most common headquarters are Aix-en-Provence (14), Marseille (10) and Vitrolles (3).

The Bouches-du-Rhône department hosts a concentration of IT services companies, alongside firms specializing in engineering and industrial project management. These companies range from large groups to mid-sized firms, with a notable presence of companies founded in the 2000s and 2010s.

SNEF, with 6519 employees, is a leader in electrical installation. ATEXIS and Klanik, both founded in 2011, provide IT consulting and technology solutions. Key Performance Consulting offers technology consulting for large project integration, and Interway specializes in managed IT services. ARIAL Industries focuses on mechanical, electrical, and embedded systems engineering.

🇫🇷 Bouches-du-Rhône · 30 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [SNEF](https://www.tamtam.ai/c/snef-marseille) (groupesnef.fr)<br>French leader in electrical installation and finishing turnkey project management, offering high/low voltage, industrial processes, HVAC, and maintenance services globally. | Manufacturing | 🇫🇷 Marseille | 6,519 |  |
| 2 | [ATEXIS](https://www.tamtam.ai/c/atexis) (atexis.com)<br>Innovates sustainable, secure technology, assisting customers with operations and maintenance of complex systems across various sectors like aerospace and defense. | IT Services and IT Consulting | 🇫🇷 Vitrolles | 809 | 2011 |
| 3 | [Klanik](https://www.tamtam.ai/c/klanik) (klanik.com)<br>Provides IT engineering consulting, assisting partners with digital and technological projects, leveraging expert talent across various technological verticals globally for digital transformation. | IT Services and IT Consulting | 🇫🇷 Marseille | 548 | 2011 |
| 4 | [Groupe ADSN](https://www.tamtam.ai/c/groupe-adsn) (groupeadsn.fr)<br>A group of experts in digital technology and data protection providing tools and solutions for notaries and regulated professions to secure sensitive data | IT Services and IT Consulting | 🇫🇷 Venelles | 501 | 1983 |
| 5 | [Key Performance Consulting (KPC)](https://www.tamtam.ai/c/key-performance-consulting-kpc) (keyperformance-consulting.com)<br>Global player in upstream and integration phases for systems, offering technology consulting and services for large project integration and business process improvement. | IT Services and IT Consulting | 🇫🇷 Aix-en-Provence | 474 | 2010 |
| 6 | [Interway](https://www.tamtam.ai/c/interway) (interway.fr)<br>Managed IT services including outsourcing, network integration, payment solutions, interactive digital systems, and extensive support for diverse sectors nationwide. | IT Services and IT Consulting | 🇫🇷 Vitrolles | 398 | 1993 |
| 7 | [iQanto](https://www.tamtam.ai/c/iqanto) (iqanto.net)<br>Industrial transformation through automation, robotics, AI, and cybersecurity to improve processes and deploy intelligent systems across diverse sectors for small and large enterprises. | IT Services and IT Consulting | 🇫🇷 Marseille | 349 |  |
| 8 | [SEA TPI](https://www.tamtam.ai/c/sea-tpi) (seatpi.com)<br>ESN specializing in IT operations, offering services in supervision, system administration, cybersecurity, and support Constantly hiring various IT professionals nationwide Visit website for job opportunities | IT Services and IT Consulting | 🇫🇷 La Ciotat | 321 | 1996 |
| 9 | [STUDIA](https://www.tamtam.ai/c/studia) (studia.fr)<br>Expertise in managing enterprise content, knowledge, and business processes, valuing business data, ensuring information integrity and security, and digital transformation. | IT Services and IT Consulting | 🇫🇷 Vitrolles | 320 | 2009 |
| 10 | [ARKADIA Group](https://www.tamtam.ai/c/arkadia-group) (arkadiagroup.fr)<br>ARKADIA Group is an independent engineering and services firm specializing in Energy and Aerospace/Transport sectors, offering expertise in large industrial projects worldwide | Business Consulting and Services | 🇫🇷 Aix-en-Provence | 214 | 2010 |
| 11 | [REACTIS Group](https://www.tamtam.ai/c/reactis-group) (reactis.fr)<br>Company helps businesses with IT projects, software development, systems maintenance, digital transformation, and application services through various flexible intervention modes. | IT Services and IT Consulting | 🇫🇷 Aix-en-Provence | 163 | 2001 |
| 12 | [ARIAL Industries](https://www.tamtam.ai/c/arial-industries) (arial-industries.com)<br>ARIAL Industries is an engineering company specializing in mechanical, electrical/electronic, and embedded systems for clients in aerospace, nuclear, automotive, and space industries | Engineering Services | 🇫🇷 Aix-en-Provence | 141 | 2001 |
| 13 | [CLEARSY](https://www.tamtam.ai/c/clearsy) (clearsy.com)<br>Specializing in safety critical system design and certification, including data validation and safety demonstration Experienced in promoting formal B method for disruption in system development | IT Services and IT Consulting | 🇫🇷 Aix-en-Provence | 139 | 2001 |
| 14 | [Team-iT](https://www.tamtam.ai/c/team-it) (team-it.fr)<br>Specialized in IT infrastructure, cybersecurity, DevOps, cloud, project management, and ITIL process management for large corporate clients. | IT Services and IT Consulting | 🇫🇷 Aix-en-Provence | 135 | 2014 |
| 15 | [Reel IT Groupe](https://www.tamtam.ai/c/reel-it-groupe) (reelit.fr)<br>REEL IT Group, founded by digital transformation experts, offers a diverse range of solutions to drive businesses forward through digital transformation | Computer Networking Products | 🇫🇷 Aix-en-Provence | 120 | 2019 |
| 16 | [Natural Solutions](https://www.tamtam.ai/c/natural-solutions) (natural-solutions.eu)<br>An innovative company bridging the gap between environmental scientists and software engineers, focusing on data acquisition, storage, analysis, and visualization | Software Development | 🇫🇷 Marseille | 118 |  |
| 17 | [Amesys Conseil](https://www.tamtam.ai/c/amesys-conseil) (amesys-conseil.fr)<br>Consulting and industrial group specializing in Defense & aerospace, aeronautics, transportation, RF, and homeland security markets with consistent growth and profitability | IT Services and IT Consulting | 🇫🇷 Aix-en-Provence | 118 | 1979 |
| 18 | [Dev-id](https://www.tamtam.ai/c/dev-id) (dev-id.fr)<br>It is a network of digital makers specializing in creating innovative digital products and training future members through an academy. | Software Development | 🇫🇷 Marseille | 109 | 2017 |
| 19 | [Systerel](https://www.tamtam.ai/c/systerel) (systerel.fr)<br>Systerel specializes in developing innovative solutions for safety critical systems using advanced technologies and rigorous processes for various industries | Software Development | 🇫🇷 Aix-en-Provence | 107 | 2001 |
| 20 | [Softway Medical Group](https://www.tamtam.ai/c/softway-medical-group) (groupesoftwaymedical.com)<br>Development and provision of comprehensive healthcare information systems supporting professionals across primary care and hospitals, enabling digital transformation and innovation in healthcare. | IT System Custom Software Development | 🇫🇷 Fuveau | 104 | 2006 |
| 21 | [CS in Defense & Security](https://www.tamtam.ai/c/cs-in-defense-and-security) (cs-soprasteria.com)<br>Leading prime contractor specializing in design, integration, and operation of turnkey systems for critical applications in space, defense, aeronautics, and energy sectors worldwide | IT Services and IT Consulting | 🇫🇷 Aix-en-Provence | 103 | 1996 |
| 22 | [Netsystem](https://www.tamtam.ai/c/netsystem) (netsystem.fr)<br>Netsystem is an IT consulting company specializing in digital transformation and information systems strategy, offering services in digital trust and digital transformation across various industries | IT Services and IT Consulting | 🇫🇷 Aix-en-Provence | 100 | 2003 |
| 23 | [ACSEP](https://www.tamtam.ai/c/acsep) (acsep.com)<br>Specialist in optimizing logistics performance with a focus on Digital Supply Chain, including innovative WMS solutions for warehouse management | Transportation, Logistics, Supply Chain and Storage | 🇫🇷 Aix-en-Provence | 99 | 2005 |
| 24 | [POLE SUD](https://www.tamtam.ai/c/pole-sud-marseille) (polesud-it.fr)<br>Digital services company providing tailored expertise for over 25 years, focusing on excellence, trust, and long-term partnerships with clients | IT Services and IT Consulting | 🇫🇷 Marseille | 73 | 1996 |
| 25 | [Season](https://www.tamtam.ai/c/season) (season-ed.com)<br>Development of agile, Salesforce-based cloud software solutions for higher education institutions focusing on contact and interaction management. | IT Services and IT Consulting | 🇫🇷 Aix-en-Provence | 71 | 2018 |
| 26 | [StarDust CTG Group](https://www.tamtam.ai/c/stardust-ctg-group) (stardust-testing.com)<br>StarDust supports clients in creating and launching digital solutions, providing testing services for mobile apps and websites to enhance user experience and ROI | Internet Publishing | 🇫🇷 Marseille | 69 |  |
| 27 | [TJC Group](https://www.tamtam.ai/c/tjc-group) (tjc-group.com)<br>Specializing in SAP Data Archiving, ILM, Legacy System Decommissioning, and Global Tax Compliance, preparing data for SAP S/4HANA migration with expert consultancy services | IT Services and IT Consulting | 🇫🇷 Marseille | 68 | 1997 |
| 28 | [KAIMAN](https://www.tamtam.ai/c/kaiman) (kaiman.fr)<br>A digital agency based in Aix-en-Provence specializing in custom digital strategies, offering strategic consulting and fostering partnerships with clients for growth | Advertising Services | 🇫🇷 Aix-en-Provence | 61 | 1999 |
| 29 | [ARCANES - Intégrateur SAGE X3](https://www.tamtam.ai/c/arcanes-integrateur-sage-x3) (arcanes.info)<br>A company founded in 1983 specializing in integrating Sage X3 solution, known for its human-centered services, values of service, expertise, and commitment | IT Services and IT Consulting | 🇫🇷 Marseille | 61 | 1983 |
| 30 | [WEENEO Consulting](https://www.tamtam.ai/c/weeneo-consulting) (weeneoconsulting.com)<br>Join a dynamic team working with renowned clients, focusing on IT project management, software development, cybersecurity, and more, with a sports-inspired approach and supportive environment | IT Services and IT Consulting | 🇫🇷 Marseille | 56 | 2018 |

## 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 Bouches-du-Rhône department

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- [Critical infrastructure operators in the Bouches-du-Rhône department](https://www.tamtam.ai/l/critical-infrastructure-operators-bouches-du-rhone) (98)
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## The same list elsewhere in France

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- [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)
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Source: https://www.tamtam.ai/l/it-services-companies-bouches-du-rhone