Network Engineer | Routing & Switching (4 openings)

A2IT Technology; Oeiras; On-site; EUR 45,000 - 65,000; Full time

Job summary

A2IT Technology in Lisbon area is seeking a Network Engineer focused on Routing and Switching to support enterprise networks and data centers. You will contribute to managing LANs, troubleshooting incidents, and implementing changes across Cisco environments.

The ideal candidate has 5+ years in IP networking, CCNP Enterprise certification, and hands-on experience with Catalyst/Nexus/ASA/ACI, plus virtualization. Join a team delivering robust, scalable network solutions.

Qualifications

• Minimum 5 years managing IP networks and data centers.
• Active CCNP Enterprise certification for at least 3 years.
• Hands-on Cisco experience with Catalyst 6500, Nexus 7000, ASA, ASR, ACI.
• Strong routing and switching, MPLS, VLAN, VPN, IPSec, TCP/IP, IPv4/IPv6, QoS, ACL, SD‑WAN, and virtualization (VMware ESXi, Hyper‑V).
• One of four engineers must have proven enterprise Wi‑Fi experience.

Responsibilities

• Manage and maintain LAN infrastructure and network equipment.
• Analyze, troubleshoot, and resolve network incidents.
• Provide support and collaborate with internal users to identify issues.
• Perform network changes and reconfigurations.
• Produce and maintain technical documentation and operational reports.
• Assess impacts and propose solutions to minimize operational risks.

Skills

Routing & Switching

MPLS

VLAN

VPN

IPSec

TCP/IP

IPv4/IPv6

QoS

ACL

SD-WAN

Virtualization

VMware ESXi

Hyper-V

Education

High school diploma / equivalent

CCNP Enterprise certification

Tools

Cisco Catalyst 6500

Cisco Nexus 7000

ASA

ASR

ACI

Job description

We are hiring: Network Engineer | Routing & Switching (4 openings)

We are looking for experienced professionals to join a Communications Engineering team, focused on the management and evolution of enterprise network infrastructures.

• High school diploma (12th grade) or equivalent technical qualification;
• Active CCNP Enterprise certification for at least 3 years;
• More than 5 years of proven experience managing IP networks and Data Centers;
• Hands‑on experience with Cisco environments (Catalyst 6500, Nexus 7000, ASA, ASR, ACI, among others);
• Strong knowledge of Routing & Switching, MPLS, VLAN, VPN, IPSec, TCP/IP, IPv4/IPv6, QoS, ACL, SD‑WAN, and virtualization technologies (VMware ESXi and Hyper‑V);
• One of the four professionals must have proven experience managing and maintaining enterprise Wi‑Fi networks.

• Manage and maintain LAN infrastructure and network equipment;
• Analyze, troubleshoot, and resolve network incidents;
• Provide support and collaborate with internal users to identify technical issues;
• Perform network changes and reconfigurations;
• Produce and maintain technical documentation and operational reports,
• Assess impacts and propose solutions to minimize operational risks.

If you have experience working with complex network environments and are looking for a new challenge, we would like to hear from you!