These IT services and consulting firms in Bouches-du-Rhône are mostly mid-sized companies. They offer a range of digital solutions, from IT engineering to data protection and digital transformation. They serve various sectors including aerospace, defense, healthcare, and public transport.
Notable companies include ATEXIS, which innovates sustainable technology for complex systems, and Klanik, which provides IT engineering consulting. Groupe ADSN focuses on digital technology for regulated professions, while Arche MC2 offers digital solutions for social services. A common pattern is the concentration of headquarters in a few cities, with Aix-en-Provence and Vitrolles being prominent locations.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
ATEXISatexis.com
Innovates sustainable, secure technology, assisting customers with operations and maintenance of complex systems across various sectors like aerospace and defense. |
809 | |||
| 2 |
Klanikklanik.com
Provides IT engineering consulting, assisting partners with digital and technological projects, leveraging expert talent across various technological verticals globally for digital transformation. |
548 | |||
| 3 |
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 |
501 | |||
| 4 |
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. |
474 | |||
| 5 |
Arche MC2arche-mc2.fr
Provides digital solutions for social services and healthcare, supporting organizations in their transformation and adapting to evolving regulations and processes. |
428 | |||
| 6 |
Interwayinterway.fr
Managed IT services including outsourcing, network integration, payment solutions, interactive digital systems, and extensive support for diverse sectors nationwide. |
398 | |||
| 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. |
349 | |||
| 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 |
321 | |||
| 9 | 320 | ||||
| 10 | 298 | ||||
| 11 |
OCEANCALLoceancall.co
OceanCall is an independent and innovative outsourcing company offering flexible, personalized solutions for customer relations and data processing to boost growth and enhance customer interactions |
272 | |||
| 12 | 171 | ||||
| 13 |
REACTIS Groupreactis.fr
Company helps businesses with IT projects, software development, systems maintenance, digital transformation, and application services through various flexible intervention modes. |
163 | |||
| 14 |
Citywaycityway.io
Development of white label software enhancing public transport accessibility, efficiency, and seamless mobility experiences for cities and regions worldwide. |
161 | |||
| 15 |
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 |
139 | |||
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| 16 |
Team-iTteam-it.fr
Specialized in IT infrastructure, cybersecurity, DevOps, cloud, project management, and ITIL process management for large corporate clients. |
135 | |||
| 17 |
NEXTALKnextalk.fr
Multichannel contact center specializing in client relations, facilitating dialogue between digital brands and customers in multiple languages through phone, chat, and interactive voice response |
124 | |||
| 18 |
OPTIMUMoptimum-automotive.com
Specializes in geolocation and fleet management services, offering platforms for vehicle tracking, fleet optimization, and eco-driving solutions. |
118 | |||
| 19 |
Amesys Conseilamesys-conseil.fr
Consulting and industrial group specializing in Defense & aerospace, aeronautics, transportation, RF, and homeland security markets with consistent growth and profitability |
118 | |||
| 20 |
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 |
103 | |||
| 21 |
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 |
100 | |||
| 22 |
WATCHDATA TECHNOLOGIES (FRANCE) SASwatchdata.fr
A leading expert in digital authentication and transaction security, providing electronic security solutions to various sectors worldwide |
85 | |||
| 23 |
POLE SUDpolesud-it.fr
Digital services company providing tailored expertise for over 25 years, focusing on excellence, trust, and long-term partnerships with clients |
73 | |||
| 24 |
Seasonseason-ed.com
Development of agile, Salesforce-based cloud software solutions for higher education institutions focusing on contact and interaction management. |
71 | |||
| 25 |
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 |
68 | |||
| 26 |
DEVISUBOXdevisubox.com
A global leader in real-time construction site monitoring, providing innovative photobox technology with autonomous capabilities and UltraHD timelapse films |
63 | |||
| 27 |
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 |
61 | |||
| 28 | 
ADMINISTRATEUR RESEAUX TELECOM
An IT and telecom services company located in Marseille, France, specializing in network administration and telecommunications |
60 | |||
| 29 |
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 |
56 | |||
| 30 |
IZITEKizitek.net
Offering tailored IT solutions nationwide in financing, maintenance, security, networks, IP telephony, digital signage, video surveillance, sound systems, and payment solutions Recognized for digitalization expertise |
55 | |||
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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 15, 2026.
More company lists in the Bouches-du-Rhône department
- The largest companies in the Bouches-du-Rhône department 3,315
- Multinational companies in the Bouches-du-Rhône department 350
- Companies with in-house R&D in the Bouches-du-Rhône department 319
- Retail chains in the Bouches-du-Rhône department 281
- Professional services firms in the Bouches-du-Rhône department 249
- Manufacturers in the Bouches-du-Rhône department 186
- Public sector organisations in the Bouches-du-Rhône department 183
- Distributors and wholesalers in the Bouches-du-Rhône department 156
- IT services companies in the Bouches-du-Rhône department 155
- SaaS companies in the Bouches-du-Rhône department 144
- Hardware manufacturers in the Bouches-du-Rhône department 142
- Family-owned companies in the Bouches-du-Rhône department 141
- Consulting firms in the Bouches-du-Rhône department 129
- Software Development companies in the Bouches-du-Rhône department 120
- Education providers in the Bouches-du-Rhône department 119
- Business Consulting and Services companies in the Bouches-du-Rhône department 113
- Real Estate companies in the Bouches-du-Rhône department 109
- Healthcare providers in the Bouches-du-Rhône department 107
- Law Practice companies in the Bouches-du-Rhône department 100
- Critical infrastructure operators in the Bouches-du-Rhône department 98
- Accounting firms in the Bouches-du-Rhône department 93
- Accounting companies in the Bouches-du-Rhône department 92
- Construction companies in the Bouches-du-Rhône department 91
- Higher Education companies in the Bouches-du-Rhône department 83
The same list elsewhere in France
- IT Services and IT Consulting companies in France 4,943
- IT Services and IT Consulting companies in Île-de-France 2,776
- IT Services and IT Consulting companies in the Hauts-de-Seine department 706
- IT Services and IT Consulting companies in Auvergne-Rhône-Alpes 454
- IT Services and IT Consulting companies in Provence-Alpes-Côte d'Azur 261
- IT Services and IT Consulting companies in Occitanie 259
- IT Services and IT Consulting companies in the Rhône department 253
- IT Services and IT Consulting companies in Hauts-de-France 226
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- IT Services and IT Consulting companies in Nouvelle-Aquitaine 190
- IT Services and IT Consulting companies in the Nord department 169
- IT Services and IT Consulting companies in Pays de la Loire 167
- IT Services and IT Consulting companies in the Haute-Garonne department 152
- IT Services and IT Consulting companies in the Yvelines department 118
- IT Services and IT Consulting companies in the Val-de-Marne department 113
- IT Services and IT Consulting companies in the Loire-Atlantique department 110
- IT Services and IT Consulting companies in the Gironde department 105
- IT Services and IT Consulting companies in Brittany 101
- IT Services and IT Consulting companies in the Seine-Saint-Denis department 78
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- IT Services and IT Consulting companies in Toulouse 103
- IT Services and IT Consulting companies in Levallois-Perret 81