30 May 2025
30 May 2025
Teddington, United Kingdom
All Locations is a required field
IT Operations
All Departments is a required field
Starting from £53,693 - Depending on experience
Permanent

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Senior Network Engineer

About the Role
The National Physical Laboratory is the UK's leading centre for measurement science, engineering, and technology. We develop national measurement standards, support scientific and commercial innovation, and collaborate with industries to ensure precision in products and processes. Through our important scientific and research work we address key challenges in health, energy, security, telecommunications and sustainability, driving economic growth and enhancing quality of life.

We’re seeking a talented and experienced Senior Network Engineer to join our growing Technical Operations team. The primary focus of the role is network engineering, with a secondary requirement to provide on-premises infrastructure support. The ideal candidate will have extensive experience in managing and supporting complex network environments and ideally have some experience of working in a hybrid network/infrastructure role.

The role offers exposure to a wide range of technologies across networks, physical infrastructure and cloud computing and will be instrumental in ensuring that the critical technical systems supporting the essential work our scientists do, is maintained to a high standard. 
Key responsibilities: 

Design, implement, and manage on-premises network infrastructure which is primarily based on Alcatel-Lucent network switches and Wireless Access Points

Configure and maintain Fortinet firewalls to ensure network security

Monitor, manage and maintain network performance and troubleshoot issues to ensure optimal operation

Implement network and infrastructure improvements and manage changes to support all users with minimal downtime 

Provide support to other Infrastructure team members responsible for Endpoint IPAM/DHCP/DNS services 

Undertake project work, maintenance and remediation on NPL’s on-prem infrastructure including virtualisation, storage and backup systems (e.g. VMWare, Hitachi Storage Array, Rubrik, Nimble)

Ensure that all network systems and equipment are appropriately patched and secured

Collaborate with cybersecurity to ensure internal and external networks are fully secured using network access control and segmentation technologies 

Manage and report on network utilisation and performance of wired and wireless infrastructure to ensure that business requirements are met, and solutions are developed that are fit for purpose 

Create and maintain operational documentation and diagrams relating to all of NPL’s network and telephone systems
About You
Key required experience, knowledge and skills:
- Network protocols and topologies including OSPF, BGP, VRFs
- Experience with Alcatel-Lucent Enterprise switching and OmniVista management is deal but experience with other equivalent enterprise networking technologies is acceptable
- Experience of Alcatel-Lucent Enterprise Stellar Wi-Fi or similar networks
- Stateful and Next Gen Firewalls (NPL uses Fortinet) and VPN
- Network security concepts such as NAC, 802.1x and segmentation systems and any experience with Forescout is beneficial
- Protocols used in resilient systems e.g. VRRP, LACP, Virtual-Chassis
- Proficiency in using network management tools (e.g., SolarWinds)
- Experience of implementation of SD-WAN, MPLS technologies
- Experience with network segmentation, zero trust principles and micro-segmentation
- Knowledge of IPv6 implementation and transition strategies
- Familiarity with wireless security protocols (e.g., WPA3, 802.1X)
Additional experience beneficial to the role:
- Any experience with Allied Telesis EPSR Ring topologies and network management tools
- Experience with Quality of Service (QoS) configuration and management
- VMWare VCenter virtualisation platform
- On Prem storage arrays (NPL uses Hitachi)
- Managed backup solutions (NPL uses Rubrik and Commvault)
- Active Directory, DNS, DHCP
- Microsoft 365 E5, Azure, Entra ID
- Experience of Cloud Virtual Networking (Azure)
The ideal candidate will live within commuting distance to our Teddington site, but we will consider a higher degree of remote working for an exceptional candidate, and we welcome applications from experienced candidates, who have a wide range of technology experience even if that experience does not include some of the technologies listed below.

We actively recruit citizens of all backgrounds, but the nature of our work in specific departments means that nationality, residency and security requirements can be more tightly defined than others. You will be asked about this throughout the recruitment process. To work at NPL, you will need to obtain BPSS security clearance.

Please note: Applications will be reviewed, and interviews conducted throughout the duration of this advert therefore we may at any time bring the closing date forward. We encourage all interested applicants to apply as soon as practical.”
About Us
- The National Physical Laboratory (NPL) is a world-leading centre of excellence that provides cutting-edge measurement science, engineering and technology to underpin prosperity and quality of life in the UK. Find out more about what it is like working here - The measure of us - Overview
  
  NPL and DSIT have strong commitments to diversity and equality of opportunity, and welcome applications from candidates irrespective of their background, gender, race, sexual orientation, religion, or age, providing they meet the required criteria. Applications from women, disabled and black, Asian and minority ethnic candidates in particular are encouraged. All disabled candidates (as defined by the Equality Act 2010) who satisfy the minimum criteria for the role will be guaranteed an interview under the Disability Confident Scheme.
  
  At NPL, we believe our success is a result of the diversity and talent of our people. We strive to nurture and respect individuals to ensure everyone feels valued by treating everyone on the basis of their own individual merits and abilities regardless of their own or perceived identity, as part of our commitment to diversity & inclusion, we ensure we’re creating an environment where all our colleagues feel supported and welcome. More about this on our Diversity & Inclusion page.
  
  We are committed to the health and well-being of our employees. Flexible working and social activities are embedded in our culture to create a positive work-life balance, along with a broad range of rewards, benefits and recognition. Our values are at the heart of what we do, and they shape the way we interact, develop our people and celebrate success. To ensure everyone has an equal chance, we’re always willing to make reasonable adjustments to the recruitment process. If you would like to discuss, please contact us.