Network Administrator

Why are you looking for a job? 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 overviewWe 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. 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