Operational Technology Network Engineer

The Operational Technology Network Engineer will play a key role in supporting Zenobē’s growing Battery Energy Storage portfolio, helping to ensure our OT networks are secure, resilient and able to meet increasing demands for scale, performance and regulatory compliance. Reporting to the Head of Operational Technology, this role will act as the subject matter expert and design authority for OT networking.

Responsibilities

Act as the design authority and subject matter expert for the OT network; Prepare design specifications for large scale BESS projects and develop a clear and well-defined scope of work for the procurement, installation/build, configuration and commissioning of the network solutions for suitable third party tendering; Support BESS project delivery by ensuring OT network solutions meet Zenobē’s technical, security and operational requirements throughout design, procurement, build, commissioning and handover; Undertake occasional site visits to support project delivery, commissioning, operational troubleshooting and technical assurance activities; Lead the "as-is" review of the current estate and design the new "to-be" global network architecture (WAN, LAN, Security); Develop the end-to-end technical transformation roadmap, from initial design to implementation; Define, implement, and continuously improve a proportionate governance and assurance framework for all network designs and changes; Direct and govern the technical performance of all external MSPs, ensuring they adhere to architectural and engineering standards; Architect and enforce strict IT/OT segmentation and security controls to meet our CNI compliance mandates; Act as the final technical escalation point for complex, systemic network issues that other teams cannot resolve; Be a strategic thinker, translating complex network concepts, risks, and strategies for non-technical stakeholders; Actively contribute to Zenobē's commitment to health and safety, wellbeing and sustainability.

Requirements

Proven experience designing and securing networks in industrial (ICS/SCADA) or energy (utilities, renewables) environments; Corporate IT backgrounds will not be considered; Experienced in producing high-quality technical documents for internal and external audiences, including for procurement purposes; Demonstrable experience planning and delivering network change or transformation initiatives that improve resilience, scalability, security, performance or regulatory compliance, particularly within operational environments; Experience designing and deploying complex, global WANs, specifically covering Europe, North America, and APAC; Deep, design-level expertise across LAN, WAN, Wi-Fi, Data Centre, SD-WAN, unified comms, network management, and network-specific security (NGFWs, ZTNA, etc.); Demonstrable experience in building, coaching, mentoring, and providing technical leadership; Proven ability to establish technical governance, act as a design authority, and communicate strategy effectively at a leadership level; Strong commercial skills with experience running formal RFPs, managing vendor negotiations, and directing MSP performance.

Nice to have

Relevant advanced certifications (e.g., CCDE, CCIE, CISSP, CISM); Experience of industrial security standards (e.g. IEC62443, NIST 800-82); Demonstrable experience with network hardware vendors; Deep familiarity with leading security and SD-WAN vendors; Experience with cloud networking principles (Azure, AWS).

Benefits

Up to 33% annual bonus; 25 days holiday, increasing with length of service up to 30 days, plus bank holidays; Private Medical Insurance; £1,500 training budget per year; EV Salary Sacrifice Scheme; Pension scheme, up to 8% matched contributions; Enhanced parental leave; Cash back health plan; Flexible working