Network Administrator

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Network Administrator | Quality & Reliability (QnR), the parent company of QnR Group

Role overview

We are looking for a Network Administrator to join one of our EU public sector clients based in Brussels. You'll ensure operations of the network, including telecommunication and/or computer infrastructure to meet the organisation’s communication needs.

About QnR Group

QnR Group is a technology group with 35 years of experience, 8 companies, 4 delivery centers and 210+ professionals across Greece, Belgium, Cyprus and Poland. Listed on the Athens Stock Exchange since 2000, we deliver mission-critical digital transformation projects for the public and private sector. The Group’s capabilities covers software engineering, enterprise and generative AI, cybersecurity, cloud infrastructure, SAP and ServiceNow solutions, core banking and maritime intelligence.

Requirements

What you'll work on:

• Operate, maintain and support enterprise network infrastructure components
• Investigate, diagnose, and resolve network incidents and performance issues to ensure service continuity
• Ensure communication performance, resilience, and security requirements are aligned with agreed service level standards
• Utilize network management and monitoring tools to analyze network load and evaluate performance metrics
• Proactively monitor network traffic to identify and mitigate bottlenecks and optimize overall performance
• Install, configure, and upgrade network components and network monitoring solutions
• Perform testing and validation activities following infrastructure upgrades and changes
• Contribute to the continuous improvement of network availability, reliability, and security

What you bring:

• Bachelor's degree in Computer Science, Engineering or a related technical field
• At least 7 years of experience
• Strong hands-on expertise with Palo Alto and F5 technologies
• Solid experience with Cisco networking solutions
• Good understanding of networking concepts and communication protocols, including WAN, LAN/WLAN and VLAN
• Knowledge of network security principles, VPN technologies, and cryptographic communication techniques
• Experience operating and managing network devices and services, including routers, switches, load balancers, accelerators, firewalls and cryptographic communication devices
• Familiarity with network monitoring and performance management tools
• Strong troubleshooting and analytical skills, with the ability to identify and resolve complex network issues

Certifications required:

At least 1 certification from the following:

• CCDP/CCNP, CCNA, CCDE/CCIE, CCAr or relevant certifications of F5, Juniper, Palo Alto
• BIG-IP certified administrator
• BIG-IP LTM Specialist: Maintain and Troubleshoot
• BIG-IP LTM Specialist: Architect, Set up, Deploy
• SANS certification related to Network Security