What does a Network Engineer do?

A Network Engineer designs, builds, and maintains the networks that connect an organization's systems and users. They configure routers, switches, and firewalls, keep traffic secure and performant, and troubleshoot connectivity problems. When outages hit, they lead the diagnosis, often down to individual packets.

What are the main responsibilities of a Network Engineer?

The core duties are designing resilient network topologies, configuring core devices, and monitoring performance and availability. They also manage firewall rules and segmentation, plan upgrades with minimal downtime, and keep documentation current. Incident response and root-cause analysis are a recurring part of the job.

What skills does a Network Engineer need?

A deep command of TCP/IP, routing, and switching is the foundation, along with hands-on experience configuring vendor hardware like Cisco or Juniper. Network security knowledge, from firewalls to segmentation, is essential. Increasingly, scripting and automation skills set strong engineers apart.

What should a Network Engineer job description include?

A strong Network Engineer job description names the hardware vendors, network scale, and whether the environment includes data centers, cloud, or SD-WAN. It should cover design, operations, and security duties, plus on-call and incident expectations. Listing certifications such as CCNA or CCNP helps candidates assess fit.

Who does a Network Engineer work with?

A Network Engineer works closely with system administrators, security teams, and IT support on infrastructure and escalations. They coordinate with vendors and internet or connectivity providers on hardware and circuits. On projects they partner with cloud and DevOps teams to connect environments.

IT & Infrastructure

Network Engineer Job Description

IT Support Specialist System Administrator IT Manager Help Desk Technician

About the role

We are hiring a Network Engineer to design and operate the networks our business depends on. You will configure routers, switches, and firewalls, keep connectivity fast and secure across sites, and troubleshoot issues down to the packet when needed. This role fits someone who loves network internals and takes pride in a resilient, well-documented topology.

Key responsibilities

Design and maintain resilient LAN, WAN, and wireless networks
Configure and secure routers, switches, and firewalls
Monitor performance and troubleshoot connectivity issues

Responsibilities

Design network topologies for offices, data centers, and cloud connectivity
Configure and maintain routers, switches, firewalls, and load balancers
Implement VLANs, VPNs, routing protocols such as BGP and OSPF, and QoS policies
Monitor bandwidth, latency, and availability with tools like SolarWinds or PRTG
Troubleshoot connectivity issues using packet captures and structured analysis
Manage firewall rules, ACLs, and network segmentation for security
Plan and execute upgrades, migrations, and capacity expansions with minimal downtime
Maintain network documentation, IP address management, and diagrams
Support hybrid and cloud networking on AWS, Azure, or SD-WAN platforms
Respond to incidents and lead root-cause analysis for outages

Requirements

Bachelor's degree in computer science, network engineering, or equivalent experience
3 or more years designing and operating enterprise networks
Hands-on expertise with Cisco, Juniper, or comparable networking hardware
Strong grasp of TCP/IP, routing, switching, and network security
A relevant certification such as CCNA or CCNP is strongly preferred

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