Network Administrator

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About QnR Group

SquareDev is a member of theQnR Group, a leading technology organization specializing in end-to-end custom software solutions, Artificial Intelligence, Cybersecurity, SAP S/4HANA, SAP Business One, ServiceNow, and FinTech solutions.

As part of QnR Group's ongoing expansion — both in Greece and internationally — we are continuously hiring across a wide range of tech roles. Successful candidates may be hired by QnR Group, or another company within the Group, depending on the role and project.

Role overview

We are looking for aNetwork Administratorto 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.

Requirements

The ideal candidate will be responsible for:

• 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

To excel in this role, you'll need:

• Bachelor's degree in Computer Science, Engineering or a related technical field
• At least 7 years of experience
• Strong hands-on expertise withPalo AltoandF5 technologies
• Solid experience withCisco networking solutions
• Good understanding of networking concepts and communication protocols, includingWAN, LAN/WLAN and VLAN
• Knowledge of network security principles, VPN technologies, and cryptographic communication techniques
• Experience operating and managing network devices and services, includingrouters, 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 you'll need:

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