Network and security Intern

Organization

Type of position : CDI
Time : Full time
Location: Tour Hekla - la défense Paris
Supervisor: Head of Global Infrastructure

📌 Job Offer – NEtowrk and security intern

6 months Internship – based in Paris La Défense

1.Company Presentation

In 2025, the Industrial Solutions & Projects Business Group separated from the Nexans Group to become an independent company named Lynxeo. Our company is experiencing double-digit growth, with strong prospects for expansion and an international presence that keeps us close to our customers. We design and manufacture cables as well as complex solutions for industrial clients. With a balanced presence between Western Europe and Asia, and recent investments in Poland and the United States, our human-sized company combines local support with global reach.

Speed, responsiveness, simplicity, and pragmatism are at the heart of everything we do.

IT infrastructure team context 

You will be part of the Global IT infrastructure Center of Excellence (IT infra CoE), which manages global Operations, Production, Projects, and Strategy for IT infrastructure.

You will arrive during a higly visible transformation program requiring a strong capacity for adaptation and an aptitude for change.

This internship is designed to bridge the gap between Level 1 support and advanced networking. You will be actively mentored and trained by the Level 3 Network and Level 3 Security Engineers.

2. Main responsibilities

We are looking for a motivated young talent to learn and eventually support Lynxeo's corporate and worldwide Network and Security landscape (Switches, Firewalls, WAF). Supervised by senior engineers, he/she will work closely with other teams to help our Business Groups realize our Digital Transformation.

Under guidance, he/she will learn to:

• Assist in resolving service problems by participating in Root Cause Analysis (RCA).
• Help validate and implement solution releases (changes, upgrades, updates, patches, and migrations).
• Manage communication with vendors regarding problems, patches, and maintenance.
• Keep the CMDB up to date by modifying Configuration Items (CIs) during incidents and changes.
• Provide second-line support and escalation assistance for helpdesk tickets, ensuring high user satisfaction.
• Gain exposure to typical services like LAN, WAN, IT/OT firewalls, and infra as code (Firewall rules automation).

This mean : 

• Participate in the technical implementation of standard and complex Changes.
• Update the ticketing tool by integrating and tracking Changes.
• Attend Change Advisory Board (CAB) meetings to understand planning and implementation chronograms.
• Maintain technical reference documents and associated databases (Diagrams, operating procedures, CMDB, etc.).
• Learn and Contribute to Security processes and workflows (e.g., Firewall rules).
• Support routine production tasks (regular checks, inventory, monitoring, backup, maintenance).
• Assist in incident and crisis management, including writing incident reports.
• Perform network monitoring activities via the corporate monitoring tool.

We will expect a progressive acquisition of skills to manage tickets autonomously (incidents & changes), strong collaboration with other technical experts and sharing information with Level 3 engineers, consistent and clear reporting to the Network and Security Manager, and an active participation in continuous improvement (monitoring, operating instructions, etc.).

 3. Candidate profile

🎓 Technical skills required

• Currently pursuing or recently completed a degree in IT, Networking, or Computer Science.
• Fluent French and English.
• Basic theoretical or academic knowledge of Cisco networks (Routing and Switching).
• Familiarity with Agile principles.

🎓 Technical skills prefered 

• Solid understanding of networking technologies, LAN/WAN, IP sub-netting, and the 7-layer OSI model.
• Curiosity or initial academic exposure to Fortinet, Zscaler, or similar technologies.
• Interest in learning Network as Code / automation / scripting (Ansible, Terraform, Python).
• Knowledge of an industrial context and OT is a plus, however, the mindset of the candidate is more important than the actual knowledge, which can be acquired on the job.

💡Soft skills

• Strong desire and capacity to demonstrate the ability to learn on the job.
• Strong Team spirit.
• Analytical and problem-solving skills.
• Creative, Solution-oriented, and pragmatic.
• Concerned with making things work.
• Ability to communicate and cooperate clearly and concisely, both orally and in writing.
• Curiosity, integrity, freedom of thought, discernment, and respect for others.
• Fun to work with!

4. Terms and benefits

• Contract type: Internship of 6 months
• Location: Paris
• Salary: 1603,12€ per month
• Benefits: Meal reduction, 65% reimbursment of pass navigo, CSE.

5. Recruitment process

Our recruitment process is simple and fast:

1. An initial phone screening with our HR team.
2. An interview with the manager.
3. A final meeting with the management.

6. Diversity and Inclusion Statement

Lynxeo recognizes the differences that make each employee valuable and unique. Diversity is the key to performance and to our global ambition of driving the energy transition towards a sustainable planet. We know this from experience. At Lynxeo, all differences are valued and respected.

As a result, you will be a key player in a multinational organization where we foster a culture of sharing. This is why we strongly encourage diversity in our recruitment process — bring yours to Lynxeo, it is welcome!

At Lynxeo, we're ready to electrify industry. This means supporting our clients with customized cabling and connectivity solutions that meet all their energy, data transmission, and automation needs. Lynxeo recognizes the differences that make each employee valuable and unique. Diversity is key to performance and our overall ambition to lead the world in the energy transition toward a sustainable planet.