Network Administrator

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Solliciteren

Plaats

Bruxelles
1000
Brussel
België

Contract

Vooltijds, Onbepaalde duur

Datum gepubliceerd

2026-02-09

Online to:

2026-04-10
EUR 20.00 HOUR

Network Administrator - Permanent

Sansaone
Brussel
Andere
12 uren geleden

Job Title: Senior Network Administrator Location: Brussel, Belgium Work mode: Hybrid Duration: 5 months Language: French+ Dutch+English Job Description We are looking for a skilled and motivated Senior Network Administrator to ensure the design, deployment, security, and optimisation of the company’s network infrastructure within a hybrid environment. The Senior Network Administrator plays a key role in the transition toward a state-of-the-art infrastructure, aligned with modern technological constraints and the evolving needs of the organisation. In this role, you will collaborate closely with experts in telecommunications interception, infrastructure engineering, and IT operations. Responsibilities: Network Architecture & Infrastructure Management Design, deploy, and manage physical and virtual networks in hybrid environments (on-premise & cloud). Administer, configure, and maintain LAN/WAN/WLAN infrastructures. Participate in the evolution of network architecture based on application and service requirements. Work with infrastructure teams to implement SDN, and other virtualised network services. Security & Reliability Ensure the security, resilience, and reliability of network and communication systems. Manage firewalls, VPNs, load balancers, IDS/IPS, and other network security solutions. Define, implement, and maintain network security policies and best practices. Identify vulnerabilities and contribute to mitigation strategies. Operations & Troubleshooting Monitor network performance and proactively detect anomalies. Diagnose and resolve complex connectivity, performance, and configuration issues. Support incident response and ensure timely resolution of critical problems. Maintain and update network documentation, configurations, and operational procedures. Project Participation & Collaboration Contribute to infrastructure and migration projects, including virtualisation and modernisation initiatives. Work closely with system, security, and telecom experts to ensure solution consistency. Take ownership of assigned tasks, assess risks, and escalate when necessary. Contribute as a team player while being fully capable of working independently. Continuous Improvement & Technology Watch Conduct technology watch and propose improvements aligned with industry trends. Promote continuous improvement approaches and pragmatic, solution-oriented practices. Support knowledge sharing and contribute to internal expertise development. Required experience: ~5–7+ years of experience in network administration, ideally in hybrid or critical environments. ~ Strong command of Cisco, Fortinet, or equivalent technologies. ~ Excellent knowledge of network protocols and technologies: ~ TCP/IP, VLAN, BGP, OSPF, QoS ~ MPLS, routing & switching ~ Proven experience with firewalls, VPNs, IDS/IPS, and segmentation strategies. ~ Experience with virtualisation and modern network technologies: ~ SDN ~ Virtualised network services ~ Familiarity with network monitoring and management tools. ~ Fluent in French or Dutch, with solid understanding of the other language. ~ Good command of written and spoken technical English. ~ A certification in CCNP, CCIE, NSE, PCNSE or equivalent is a plus. Skills CISCO firewalls, VPNs, load balancers, IDS/IPS fortinet LAN/WAN/WLAN MPLS, routing & switching Network Administration Network Architecture SDN TCP/IP, VLAN, BGP, OSPF, QoS Languages Dutch Level Passive knowledge English Level Active knowledge French Level Passive knowledge

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Network Administrator - Permanent

Plaats

Contract

Datum gepubliceerd

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Network Administrator - Permanent

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