Network Administrator
Confirmed on the employer's own hiring board on Sep 30, 2026. First seen by Alion on Sep 29, 2026. SquareDev scores A on the Alion truth index.
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If your answer ticks all the boxes, this could be the start of a great collaboration.
- You have a curious mind - You won't understand what we're talking about if you don't
- You want to learn more around technology - You won't survive if you don't
- You want to make the world a bit better
We happen to be just like that as well. We like hacking things here and there (you included) and create scalable solutions that bring value to the world.
SquareDev?
We use state-of-the-art technology to build solutions for our customers and our partners' customers. We make sure we stay best-in-class by participating in research projects across Europe, collaborating with top universities and enterprises on AI, Data, and Cloud.
About QnR Group
SquareDev is a member of the QnR 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 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.
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.
- 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 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