Global IT Network Administrator – Connectivity & Security

Preh Group; Trofa; Presencial; EUR 35 000 - 48 000; Tempo integral

Vantagens oferecidas por esta oferta de emprego

Ongoing training and professional dev.

Competitive salary package

Resumo da oferta

Preh Group in Trofa, Portugal, is seeking an IT Network Administrator to maintain the availability, security, and performance of our network infrastructure. You will support critical operations in a dynamic, international environment, handling LAN/WAN, VPN, and wireless, and collaborating with stakeholders to sustain reliable connectivity.

You will install and configure hardware and security systems, monitor performance, diagnose incidents, and contribute to improvements.

Qualificações

• Minimum 3 years of experience in network administration.
• Strong knowledge of Cisco, Aruba and Fortinet environments.
• Solid understanding of LAN/WAN, routing protocols, monitoring tools, and packet analysis.
• Experience with DHCP, DNS, TCP/IP, SIP, TLS, MFA, Windows Server and Active Directory.
• Knowledge of network security concepts (IPS, IDS, NGFW, UTM).
• Strong troubleshooting and analytical skills.
• Ability to collaborate effectively with technical and non-technical stakeholders.
• Fluency in English (mandatory).

Responsabilidades

• Manage and optimise network infrastructure (LAN, WAN, VPN, wireless).
• Install, configure, and maintain network hardware, software, and security systems.
• Monitor network performance and ensure availability through preventive actions.
• Diagnose and resolve incidents, minimising business disruption.
• Analyse recurring issues and propose improvements to enhance stability and efficiency.
• Identify risks and contribute to strengthening network security and performance.
• Provide user support, ensuring timely and high-quality service.
• Collaborate with internal teams and external partners on infrastructure projects.
• Maintain clear and up-to-date technical documentation.

Conhecimentos

Cisco

Aruba

Fortinet

LAN/WAN

DHCP

DNS

TCP/IP

SIP

TLS

MFA

Windows Server

Active Directory

Network security

Troubleshooting

Stakeholder collaboration

English fluency

Ferramentas

Cisco IOS

ArubaOS

Fortinet FortiGate

Descrição da oferta de emprego

Preh Group in Trofa, Portugal, is seeking an IT Network Administrator to maintain the availability, security, and performance of our network infrastructure. You will support critical operations in a dynamic, international environment, handling LAN/WAN, VPN, and wireless, and collaborating with stakeholders to sustain reliable connectivity.

You will install and configure hardware and security systems, monitor performance, diagnose incidents, and contribute to improvements.