Atos Digital Security
With a staff of 450 people, Atos Cybersecurity Services France is becoming one of the main structures in Europe in the field of cybersecurity services.
The team is spread over four sites in Ile de France (Gare de Lyon, Bezons, Les Clayes-sous-Bois and Cyber Campus in La Défense), and six sites in the French regions (Aix-en-Provence/Monaco, Bordeaux , Lille, Lyon, Toulouse and Rennes).
Employees are certified across the entire IS security chain; technical consulting and audit, integration (access control, supervision, infrastructure), Cloud, OT and IoT security and managed services.
This cybersecurity business unit, which brings together all the teams of Atos Cybersecurity Services France, offers many perspectives to its employees; in terms of skill acquisition and exchanges within a community of experts and scientists bringing together the existing strengths of Atos and its new acquisitions (digital.security, Sec-Consult, in Fidem, and Motiv in particular); in terms of mobility, both on a local and international scale; as well as opportunities to participate in emblematic projects such as the security for the Olympic Games or the Grand Paris.

The Hexagone School, the Grande École of Digital Sovereignty, trains its students to become IA Engineers, with a Cyber Defense specialization in the Master's program.
These courses, directed by Commander Nicolas MALBEC, prepares future graduates for Cyber jobs for institutions, large companies, OIV, SMEs, and ETI.

Naval Group
As an international player in the naval defense industry and heir to French naval know-how, Naval Group is a partner to its customers in the management of their maritime sovereignty. Naval Group develops innovative solutions to meet the needs of navies.
Present throughout the entire ship life cycle, it designs, builds, integrates and maintains submarines and surface ships, as well as their systems and equipment, right up to dismantling. It also provides services for shipyards and naval bases.
As a high-technology industrial company, it relies on its exceptional expertise, its unique design and production resources and its ability to build strategic partnerships, particularly in the context of technology transfers.
With operations on five continents, the group has revenues of €4.1 billion and 1,628 employees (full-time equivalents / data as of December 31, 2021).


The “Direction Générale de la Sécurité Extérieure” is the French secret service. Our agents work, in a clandestine way, to protect France and the French.
Threats have never been so numerous in cyberspace. By joining us, you will be able to identify, detect, anticipate and counter these threats.
Whether you are a recent graduate or an experienced professional, we are looking for talented technicians and engineers.
You will develop innovative solutions and become a player in the operations conducted by the DGSE.
Your first mission: join us! Send your application to dgse-macandidature.cer.fct@intradef.gouv.fr
And above all, be discreet about your application! #CyberRENSemble

Marine Nationale
To ensure the safety of the French people, the French Navy operates 365 days a year, 24 hours a day, on all the world's seas. From territorial waters to the high seas, it carries out defense and security missions to protect the maritime approaches and national interests.
As a central player in nuclear dissuasion, it operates as close as possible to threats and in crisis zones.
Deterring, protecting, knowing and anticipating, intervening and preventing: this is the French Navy's goal.
From fisheries policing missions to deep strikes, the Navy has the resources and skills to act in all fields and meet the challenges of today's and tomorrow's world.

Sopra Steria
Sopra Steria is a European leader in cybersecurity and digital trust.
We help public and private sectors to ensure the resilience of their critical systems against cyber attacks and protect their information assets.
Our major customers are in the aeronautics, defense, transportation, energy and banking sectors.
- Sopra Steria's end-to-end service offering is based on a model that combines customer proximity and industrialized delivery.
- Our offer is built around the cyber life cycle: Prevention, Protection and Managed Detection & Response.
- Thanks to our sovereign positioning and strategic & technological partnerships, we provide a high level of security to our customers.
Sopra Steria has been awarded the Great Place to Work label and has offices on four continents.


DGA is the Ministry of the Armed Forces' technical expert in cyber defense, from threat anticipation to the implementation of cyber solutions for defense and high-level state authorities.
In order to have this capacity, DGA Maîtrise de l'information recruits very high level engineers specialized in :
- in the analysis and prevention of computer attacks,
- in the design of cybersecurity systems and tools and cyber weapons.
Join us by sending your application to dga-mi-bruz.recrutement.fct@intradef.gouv.fr

Community-powered agile testing
Intigriti's bug bounty platform provides realistic and continuous security testing to help companies protect their assets and brand. Our community of ethical hackers challenges our customers' security against realistic threats.
50,000+ Researchers: Over 50,000 security researchers use Intigriti for bug hunting and that number is growing!
More than 400 bug bounty programs underway: Companies of all sizes and industries trust Intigriti to launch their bug bounty program. GDPR compliant: We ensure compliance with the highest security standards.
Strong European presence: In terms of hacker payments, 8 of the top 10 countries are European. However, Intigriti is a global company. In 2020, vulnerabilities from over 140 countries were reported.

Since 2004, Mandiant has been a trusted partner to security-conscious organizations.
Effective security is based on the right combination of expertise, intelligence, and adaptive technology, and the Mandiant Advantage SaaS platform scales decades of frontline experience and industry-leading threat intelligence to deliver a range of dynamic cyber defense solutions.
Mandiant's approach helps organizations develop more effective and efficient cyber security programs and instills confidence in their readiness to defend against and respond to cyber threats.

Nexter is an architect and systems integrator for land forces, offering a range of products from armored vehicles to artillery systems. The Group also masters strategic subassemblies, such as weapon systems and ammunition, as well as onboard electronic systems. With its extensive experience, the group is present throughout the product life cycle, from design to dismantling. Its expertise ensures perfect mastery of the essential fields of combat system architecture, survivability (protection) and ergonomics. It currently employs 4,400 people in France and Europe.

Synacktiv is a company specialized in offensive security founded in 2012 by experts in the field. We are recruiting experts in our different poles: pentest, reverse-engineering, incident response and offensive tools development.
Synacktiv has offices in Paris, Toulouse, Rennes and Lyon and a team of over 100 experts.
We are CESTI approved by the ANSSI and PASSI qualified.
Do not hesitate to consult our job offers on our website and to send your application via apply@synacktiv.com


Engineering school - ISEN
ISEN is the leading digital engineering school in the South of France. A pioneer in electronics and computer training for nearly 30 years, it was the first school in the South of France to offer a cybersecurity curriculum to its engineering students. ISEN welcomes more than 800 students on 3 campuses in Toulon, Nîmes and Marseille.