Network Manager - Operational Technology OT

Network Manager (OT BESS) London / WFH to £100k

Are you an experienced Network Engineer with a strong understanding of operational technology (OT) and network security?

You could be progressing your career at a rapidly scaling renewable energy business at the forefront of the transition to a more flexible, technology enabled energy system. With a growing portfolio of wind and solar assets across the UK, the business is expanding into energy trading and investing heavily in technology, automation and AI.

As a Network Manager you'll take ownership of OT network availability, resilience and security across power generation sites and the control centre, managing infrastructure including switches, routers, firewalls, VPNs and secure remote access. You'll lead OT/IT network segmentation and boundary protection in line with IEC 62443 principles, while managing third-party connectivity providers and overseeing service performance, incidents and changes.

Collaborating with internal teams and external security providers, you'll support security monitoring, logging, incident response and remediation, ensuring network controls meet applicable NIS obligations and support risk management, supply-chain assurance and audit readiness. You'll also maintain network standards, configurations, diagrams, asset records and recovery documentation, with travel to operational sites as required for deployments, investigations, audits and stakeholder engagement.

Location / WFH:

You'll be based in the London office 3-4 days a week or visiting sites, with some flexibility to work from home.

About you:

• You have experience in network engineering, OT networking or infrastructure within a live operational environment - within utilities
• You have a strong knowledge of network and firewall configuration, routing, switching, VPNs and secure remote access
• You have experience with OT environments, network segmentation and industrial cyber security
• You have experience managing third-party providers, service performance, incidents and change management
• You have a good knowledge of IEC 62443 and an understanding of NIS/NIS2-style cyber security and resilience requirements
• You have strong troubleshooting, documentation and stakeholder management skills
• You're collaborative and pragmatic with great communication and stakeholder management skills

What's in it for you:

• Salary to £100k
• Bonus (c20%)
• Pension
• Impactful role with excellent progression

Apply now to find out more about this Network Manager (Operational Technology OT) opportunity.