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.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
SNEFgroupesnef.fr
French leader in electrical installation and finishing turnkey project management, offering high/low voltage, industrial processes, HVAC, and maintenance services globally. |
6,519 | |||
| 2 |
ATEXISatexis.com
Innovates sustainable, secure technology, assisting customers with operations and maintenance of complex systems across various sectors like aerospace and defense. |
809 | |||
| 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. |
548 | |||
| 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 |
501 | |||
| 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. |
474 | |||
| 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 |
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 |
214 | |||
| 11 |
REACTIS Groupreactis.fr
Company helps businesses with IT projects, software development, systems maintenance, digital transformation, and application services through various flexible intervention modes. |
163 | |||
| 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 |
141 | |||
| 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 |
139 | |||
| 14 |
Team-iTteam-it.fr
Specialized in IT infrastructure, cybersecurity, DevOps, cloud, project management, and ITIL process management for large corporate clients. |
135 | |||
| 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 |
120 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 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 |
118 | |||
| 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 |
118 | |||
| 18 | 109 | ||||
| 19 |
Systerelsysterel.fr
Systerel specializes in developing innovative solutions for safety critical systems using advanced technologies and rigorous processes for various industries |
107 | |||
| 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. |
104 | |||
| 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 |
103 | |||
| 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 |
100 | |||
| 23 | 99 | ||||
| 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 |
73 | |||
| 25 |
Seasonseason-ed.com
Development of agile, Salesforce-based cloud software solutions for higher education institutions focusing on contact and interaction management. |
71 | |||
| 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 |
69 | |||
| 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 |
68 | |||
| 28 | 61 | ||||
| 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 |
61 | |||
| 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 |
56 | |||
Turn this list into pipeline
Tamtam finds the decision-makers at every company on a list like this one, with verified emails, phone numbers and the buying signals that tell you when to reach out.
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
- The largest companies in the Bouches-du-Rhône department 3,318
- Multinational companies in the Bouches-du-Rhône department 351
- Companies with in-house R&D in the Bouches-du-Rhône department 321
- 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 187
- Public sector organisations in the Bouches-du-Rhône department 183
- Distributors and wholesalers in the Bouches-du-Rhône department 156
- IT Services and IT Consulting companies in the Bouches-du-Rhône department 154
- SaaS companies in the Bouches-du-Rhône department 146
- Hardware manufacturers in the Bouches-du-Rhône department 142
- Family-owned companies in the Bouches-du-Rhône department 142
- Consulting firms in the Bouches-du-Rhône department 129
- Software Development companies in the Bouches-du-Rhône department 121
- 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 companies in France 5,000
- IT services companies in Île-de-France 2,624
- IT services companies in the Hauts-de-Seine department 737
- IT services companies in Auvergne-Rhône-Alpes 519
- IT services companies in the Rhône department 286
- IT services companies in Occitanie 280
- IT services companies in Provence-Alpes-Côte d'Azur 268
- IT services companies in Grand Est 248
- IT services companies in Hauts-de-France 236
- IT services companies in Pays de la Loire 205
- IT services companies in Nouvelle-Aquitaine 194
- IT services companies in the Nord department 170
- IT services companies in the Haute-Garonne department 158
- IT services companies in the Loire-Atlantique department 130
- IT services companies in the Yvelines department 121
- IT services companies in Brittany 113
- IT services companies in the Val-de-Marne department 101
- IT services companies in the Gironde department 99
- IT services companies in Paris 1,386
- IT services companies in Lyon 171
- IT services companies in Boulogne-Billancourt 125
- IT services companies in Toulouse 119
- IT services companies in Levallois-Perret 94
- IT services companies in Neuilly-sur-Seine 87