Network Engineer Job Description and Role Profile

This Network Engineer role is suited to experienced technical professionals responsible for designing, implementing and maintaining resilient network infrastructure. Candidates should be comfortable troubleshooting complex issues, delivering project work and collaborating with IT teams and stakeholders to maintain secure, high-performance networks.

Network Engineer Job Profile

The Network Engineer is responsible for the operational health, availability and security of data and voice networks. The role focuses on delivering reliable connectivity across local and wide area networks, supporting business applications and ensuring network services meet agreed performance and compliance standards.

The post-holder will work within an IT or infrastructure team, contributing to network design, capacity planning and incident resolution while producing accurate documentation and guidance for stakeholders. This role suits candidates with strong technical troubleshooting skills and an ability to communicate complex information clearly to technical and non-technical audiences.

Network Engineer Job Description

The Network Engineer will design, configure and maintain network components to support business requirements. Regular duties include implementing routing and switching changes, overseeing security controls and performing routine maintenance to ensure network stability. The role requires monitoring network performance, analysing logs and metrics, and initiating corrective actions to prevent or resolve incidents.

Working closely with systems, security and applications teams, the Network Engineer contributes to projects such as network upgrades, migrations and the introduction of new services. The role involves producing and maintaining network diagrams, runbooks and change records, and participating in capacity planning and risk assessments to support continuous improvement and compliance with organisational policies.

Network Engineer: Duties and Responsibilities

• Design, deploy and maintain LAN, WAN and wireless network architectures to meet business needs.
• Configure and optimise routing, switching and firewall components to ensure reliable connectivity.
• Monitor network performance and capacity, and implement tuning or upgrades as required.
• Diagnose and resolve network incidents, perform root cause analysis and apply long term fixes.
• Implement and maintain network security controls, segmentation and access management.
• Manage IP addressing, DNS and DHCP configurations and maintain accurate inventory records.
• Plan and execute network changes, upgrades and migrations following change control processes.
• Create and maintain network diagrams, runbooks, configuration baselines and operational documentation.
• Carry out network testing, validation and post-change verification activities.
• Collaborate with cross-functional teams and external suppliers on project delivery and incident resolution.
• Provide technical support and guidance to support teams and escalate incidents when necessary.
• Participate in on-call rota and incident response activities to restore services within target timeframes.
• Contribute to capacity planning, performance forecasting and continuous improvement initiatives.
• Mentor junior staff and provide knowledge transfer to improve team capability.

Network Engineer: Requirements and Qualifications

• Bachelor's degree in Computer Science, Network Engineering, Information Technology or a related discipline, or equivalent practical experience.
• Proven experience in network engineering or administration roles, typically 3 years or more.
• Strong understanding of TCP/IP, routing protocols, switching, VLANs and subnetting.
• Experience with WAN technologies, VPNs and network security principles.
• Competence in monitoring, logging and performance analysis methodologies.
• Practical experience producing network documentation, diagrams and change records.
• Good diagnostic and problem-solving skills with a methodical troubleshooting approach.
• Effective written and verbal communication skills for technical and non-technical audiences.
• Familiarity with network design, capacity planning and risk assessment practices.
• Ability to work independently and as part of a multidisciplinary IT team under pressure.
• Willingness to participate in an on-call rota and occasional out-of-hours work for incident resolution.
• Relevant professional certifications or demonstrable commitment to ongoing technical development.