Network Engineer (f/m/d)

X FAB; Corbeil-Essonnes; On-site; EUR 60,000 - 90,000; Full time

Job summary

X FAB France in Corbeil-Essonnes seeks a Network RUN & Architecture Engineer to join an international industrial group. You will contribute to operation, security, and evolution of the site’s network and telephony infrastructures, collaborating with local and Group IT teams.

Responsibilities include maintaining Linux/Windows environments, monitoring performance, ensuring security, and providing Level 2/3 support.

Qualifications

• Master's degree in Networking or equivalent qualification.
• Fluent in English and French (minimum B2).
• Proven experience as a Network Engineer or Network Expert.
• Strong knowledge of high-availability network architectures.
• Solid Linux/Unix and Windows system administration skills.
• Solid understanding of network and system security concepts.
• Methodical and well-organized in a demanding production environment.

Responsibilities

• Maintain operational network and system infrastructures (Linux/Unix and Windows).
• Monitor performance and capacity indicators to assure availability.
• Ensure security and reliability of infrastructures in a critical industrial setting.
• Provide Level 2/3 incident resolution and root cause analyses.
• Design, evolve, and document LAN, Wi‑Fi, and telephony networks.
• Participate in network projects and deployment into production.
• Maintain accurate technical documentation and best practices.

Skills

High-availability networks

Linux/Windows admin

Network security concepts

English fluency

French proficiency

Education

Master's degree in Networking

Tools

Cisco

Fortinet

UniFi

VMware

Proxmox

Asterisk

XiVO

FreePBX

Job description

Corbeil-Essonnes, France

The IT organization of X‑FAB France, based in Corbeil‑Essonnes, is looking for a Network RUN & Architecture Engineer.

You will join an international industrial group and work closely with the Group IT teams in an environment where infrastructure availability, performance, and reliability are critical business requirements.

In this role, and in close collaboration with both local and global teams, you will contribute to the operation, security, and evolution of the site's network and telephony infrastructures.

Your Responsibilities

• Ensure the operational maintenance of network and system infrastructures (Linux/Unix and Windows).
• Monitor infrastructure performance and capacity indicators.
• Guarantee the availability, performance, and security of infrastructures within a critical industrial environment.
• Provide Level 2/3 support by handling incidents and problem resolution.
• Conduct root cause analyses and implement corrective and preventive actions.
• Manage equipment configurations and backups.
• Monitor infrastructure performance and capacity metrics.
• Administer and enhance network infrastructure services (DNS, DHCP, Proxy, Radius, PKI, etc.).

Projects & Architecture

• Lead or contribute to network evolution projects (LAN, Wi‑Fi, telephony).
• Participate in the design and evolution of the site's network architecture.
• Integrate new solutions and ensure their successful deployment into production.
• Provide network expertise for local and Group IT projects.
• Maintain accurate and up-to-date technical documentation.
• Contribute to the continuous improvement of infrastructures and operational practices.
• Participate in the standardization and optimization of network solutions.

Security

• Ensure the security of network infrastructures and data flows.
• Contribute to the implementation of security policies (segmentation, access control, filtering).
• Administer firewalls and security solutions in collaboration with Group Security teams.
• Identify, plan, and deploy security updates and patches for network equipment and services.

Your Profile

• Master's degree (Bac+5) in Engineering or an equivalent qualification, with a specialization in Networking.
• Fluent in both English and French, written and spoken (minimum B2 level).
• Proven experience as a Network Engineer or Network Expert.
• Strong knowledge of high-availability network architectures.
• Good system administration skills in Linux/Unix and Windows environments.
• Solid understanding of network and system security concepts.
• Methodical, rigorous, and well-organized, with a strong sense of responsibility in a demanding production environment.

Technology Environment

Operating Systems: Linux/Unix (CentOS, Ubuntu, AIX), Windows Server

Virtualization: VMware, Proxmox

Networking: Cisco, Fortinet, UniFi Wi‑Fi

Telephony: DECT, Asterisk, XiVO, FreePBX

Monitoring: CheckMK, Nagios, Elastic Stack

Tools: JIRA, Confluence

Location: Corbeil‑Essonnes, France

Contract Type: Permanent (CDI)

Contact person: Clara Garnier