Network/Security Engineer
IT Service ManagementLuxembourg

Sylvain Marsal
Recruiter
This position is with a prestigious European institution that delivers critical services and has implemented a state-of-the-art infrastructure using top-tier vendors for network, security, and cloud solutions. We are looking for an experienced Senior Network Security Engineer to join our team. The ideal candidate will have a strong background in advanced networking, high-availability design, security, automation, and modern infrastructure technologies.
Key Responsibilities:
- Fulfill service requests related to network operations.
- Provide 2nd level incident response and escalate issues to vendors when necessary.
- Contribute to problem management, including root cause analysis and continuous improvement initiatives.
- Support lifecycle management activities for network services, ensuring efficiency and compliance with best practices.
- Assist in the design and implementation of new services and network solutions.
- Manage configuration changes and ensure documentation is up to date.
- Design and implement network management systems and other operational tools:
- Define architecture and evaluate market solutions.
- Conduct proof of concepts and pre-production testing.
- Implement new solutions for operations, including:
- Migrating new systems into production.
- Defining operational procedures and automating routine tasks.
- Develop and configure custom tools (e.g., web-based dashboards, databases, automation scripts).
- Evaluate quality and efficiency of operations by defining and implementing metrics.
- Regularly monitor and analyze network performance metrics, proposing measures for quality and efficiency improvements.
Required Skills & Experience:
- Proven experience in network operations in a large-scale environment.
- Strong knowledge of incident management, request fulfillment, and problem resolution.
- Hands-on experience with configuration management in enterprise networks.
- Experience working with network management and monitoring tools.
- Familiarity with routing and switching technologies (BGP, OSPF, VLAN, VPNs, MPLS, etc.).
- Good understanding of firewall policies, F5 load balancing, and security best practices (focus on F5 and Palo Alto).
- Experience with automation and scripting (Python, Ansible, Terraform is a plus).
- Understanding of network performance monitoring and troubleshooting methodologies.
- Experience working in multi-vendor environments (F5, Palo Alto, Cisco, Juniper, Fortinet, etc.).
- Strong analytical skills and ability to work on problem resolution and service improvements.
Qualifications & Certifications:
- Bachelor’s or Master’s degree in Computer Science, Networks, Telecommunications, or equivalent.
- A relevant networking certification (e.g., CCNA, CCNP, NSE4, or equivalent) is preferred but not mandatory.
- Fluency in English (C Level) is required.
Preferred Skills (Nice to Have):
- Hands-on experience with network automation tools.
- Knowledge of cloud networking (AWS, Azure, or hybrid-cloud solutions).
- Understanding of container networking (Kubernetes, Docker).
- Experience with network telemetry and monitoring tools.
- Exposure to SDN and network virtualization (NSX, Cisco ACI).
Our offer:
At CTG, we believe in rewarding our employees and providing an appealing work environment. When you join our team you can expect
- Competitive salary package, with or without a company car
- Personalized training programs and development plans to nurture your skills
- 5 additional vacation days
- Regular team-building events, learning lunches, and fun activities
- Extra-legal benefits (daily allowances, PC plan)
Please note that a criminal record check will be required for this position.
Discover the exciting opportunities that await you at CTG, where your IT expertise meets a world of possibilities!
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