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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).

🇫🇷 Bouches-du-Rhône30 companiesUpdated Nov 11, 2026

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.

#CompanyIndustryHeadquarters EmployeesFounded
1
SNEFgroupesnef.fr

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 n/a
2
ATEXISatexis.com

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
Klanikklanik.com

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 ADSNgroupeadsn.fr

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)keyperformance-consulting.com

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
Interwayinterway.fr

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
iQantoiqanto.net

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 n/a
8
SEA TPIseatpi.com

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
STUDIAstudia.fr

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 Grouparkadiagroup.fr

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 Groupreactis.fr

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 Industriesarial-industries.com

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
CLEARSYclearsy.com

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-iTteam-it.fr

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 Groupereelit.fr

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

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16
Natural Solutionsnatural-solutions.eu

An innovative company bridging the gap between environmental scientists and software engineers, focusing on data acquisition, storage, analysis, and visualization

Software Development 🇫🇷 Marseille 118 n/a
17
Amesys Conseilamesys-conseil.fr

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-iddev-id.fr

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
Systerelsysterel.fr

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 Groupgroupesoftwaymedical.com

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 & Securitycs-soprasteria.com

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
Netsystemnetsystem.fr

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
ACSEPacsep.com

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 SUDpolesud-it.fr

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
Seasonseason-ed.com

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 Groupstardust-testing.com

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 n/a
27
TJC Grouptjc-group.com

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
KAIMANkaiman.fr

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 X3arcanes.info

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 Consultingweeneoconsulting.com

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

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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 11, 2026.

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