Principal Network Engineer

About Us

We deliver safe and secure energy to homes, communities, and businesses every day. Our expertise and track record put us in an unparalleled position to shape the sustainable future of our industry.

Job Purpose

Our vision is to be recognized as a world-leading Information Technology and Digital function in the energy sector and a trusted partner across National Grid businesses. In the Principal Network Engineer role, you will lead the design, implementation, and lifecycle management of resilient, secure, and scalable WAN, LAN, WLAN, and SD-WAN network services.

Key Accountabilities

• Design, implement, and maintain WAN, LAN, WLAN, and SD-WAN infrastructure, ensuring high availability, security, resiliency, and scalability.
• Provide technical expertise and strategic guidance on network architecture, upgrades, lifecycle management, and emerging technologies to meet evolving business needs.
• Lead network projects and complex technical workstreams, acting as both a team leader and an individual contributor to deliver outcomes on time and within budget.
• Collaborate with internal stakeholders, managed service providers, and vendors to ensure requirements are understood, risks are managed, and solutions are delivered effectively.
• Create and maintain comprehensive network documentation including network engineering standards, configurations, diagrams, low-level designs, implementation records, as-built documents, and operational processes.
• Support major incidents, problem investigations, and escalations relating to network services or performance, driving troubleshooting to resolution and identifying structural improvements.
• Support planned network changes and maintenance activities outside normal business hours.
• Prepare operational readiness by creating and maintaining configuration standards, support runbooks, and handover material; store artefacts in SharePoint and complete transition to support where required.
• Stay current with industry trends and innovations, recommending practical improvements that enhance capability, standardization, automation, and service quality.
• Participate in peer reviews, technical governance, and knowledge sharing across the Network Engineering Chapter.
• Coach, mentor, and have line management responsibilities for a small team of network engineers (2-6).
• Operate within a SAFe Agile delivery model, with active participation in agile ceremonies, effective management of work through Jira, and collaboration with cross-functional teams to deliver network engineering outcomes.

Qualifications

• Bachelor's degree in a related field or equivalent combination of education and experience.
• 10+ years of experience in enterprise network engineering and architecture.
• Cisco CCNP required; CCIE preferred.
• Azure Network Engineer (AZ-700), Cisco DevNet, SAFe Agilist, or similar certifications preferred.
• Experience developing technical documentation, network standards, and implementation/support artifacts.
• Experience with network automation tools such as Ansible, NetBrain, and Python.
• Strong stakeholder management, vendor engagement, and collaboration skills.
• Advanced knowledge of BGP, OSPF, SD-WAN (Cisco Viptela), carrier WAN, and internet services.
• Expertise in Cisco LAN technologies, including VLANs, STP, EtherChannel, stacking, redundancy, and QoS.
• Experience with Cisco and Aruba wireless and network access solutions (WLAN, ISE, ClearPass).
• Strong Layer 2/3 routing, switching, wireless, and troubleshooting skills.
• Knowledge of network security, internet gateways, and secure connectivity practices.
• Experience with Azure networking and hybrid cloud connectivity.
• Understanding of cloud networking, resiliency, scalability, and automation.
• Proven experience creating detailed network designs, implementation plans, change records, runbooks, and operational documentation.

Salary

$165k - $194k a year

Benefits

National Grid will not be providing visa sponsorship for this position now or in the future. You must have the ability to work without a need for current or future visa sponsorship.

This position has a career path which provides for advancement opportunities within and across bands as you develop and evolve in the position; gaining experience, expertise and acquiring and applying technical skills.

Candidates will be assessed and provided offers against the minimum qualifications of this role and their individual experience.

Equal Employment Opportunity: National Grid is committed to providing equal employment opportunities to all employees and applicants for employment regardless of protected class. We do not discriminate on the basis of race, color, religion, sex (including pregnancy, gender identity, and sexual orientation), national origin, age, disability, genetic information, or any other protected status in accordance with applicable federal, state, and local laws.