Operational Technology Network Engineer

Zenobē; Greater London; Hybrid; GBP 90,000 - 130,000; Full time

Benefits offered by this job

Annual bonus

25 days holiday

Private medical insurance

Training budget

EV salary sacrifice

Pension scheme

Enhanced parental leave

Cash back health plan

Plus more

Job summary

Zenobē is seeking an experienced Operational Technology Network Engineer to secure and scale OT networks across its Battery Energy Storage portfolio. You will act as the design authority, shaping the end-to-end network architecture and governance, and work with internal teams and MSPs to ensure secure, compliant delivery.

The role requires experience in industrial networks, global WAN design, and leadership to guide strategic network transformation.

Qualifications

• OT / CNI experience: proven design and security for industrial/energy environments.
• Technical documentation: producing high-quality docs for internal/external audiences.
• Network change and transformation projects improving resilience, security, compliance.
• Global architecture: experience with complex WANs across regions.
• Expert-level technical acumen across LAN/WAN/SD-WAN/security.
• Team leadership: coaching and mentoring technical staff.
• Governance & strategy: establish governance and communicate strategy.
• Commercial & partner management: run RFPs, manage vendor MSP performance.

Responsibilities

• Act as design authority for the OT network.
• Prepare design specifications for large-scale BESS projects and define procurement scope.
• Support BESS project delivery ensuring OT solutions meet requirements.
• Lead transition from project-based designs to a repeatable global network model.
• Develop end-to-end technical transformation roadmap for network architecture.
• Define and improve governance framework for all network designs.
• Oversee external MSPs, ensuring adherence to standards.
• Architect IT/OT segmentation and security controls for CNI compliance.
• Escalate complex network issues to resolution.
• Translate complex network concepts for non-technical stakeholders.

Skills

OT/CNI design

Technical documentation

Network transformation

Global WAN design

Security expertise

Team leadership

Governance & strategy

Vendor/MSP management

Job description

ABOUT ZENOBE

Our mission is to make clean power accessible. We are passionate about making a positive impact on communities and the environment where we work.

We’re designing, financing, building and operating the world’s most sophisticated battery systems to enable the uptake of more renewable power, electrifying fleets for cleaner air, and providing clean, portable power including repurposed electric vehicle batteries. Our proprietary software and data analysis optimises operational performance for our customers to reduce emissions and costs.

Since we began in 2017, we’ve raised over £2.7 billion in debt and equity funding and transformed it into >1.2 GW of grid‑connected batteries live or under contract and c.3,400 electric vehicles supported. We have operations in the UK, Europe, Australia, New Zealand, and the US and Canada, with a global headquarters in London.

We’re the leading owner and operator of battery storage in the UK, supporting the National Grid with the uptake of renewable power. We also work with c.90% of the UK’s major bus companies, powering 25% of the UK e‑bus market. We’re also the number one owner and operator of e‑buses in Australia and New Zealand, and are quickly expanding into light commercial vehicles and trucks. Our rapidly growing company is looking for highly talented and motivated people to join us.

THE OPPORTUNITY

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. You will play a key role in the BESS project portfolio delivery and ongoing operational support for the assets. You will define design requirements, provide technical assurance, support key network engineering decisions and ensure solutions are secure by design and aligned to CNI requirements under NIS.

The role will support the assessment and improvement of existing OT network environments, working with the current OT team, Engineering leadership, senior stakeholders and external MSPs. You will lead the transition from individual project‑based designs to a repeatable, scalable and globally aligned network model, including development of future strategy, target architecture, scope of works, partner selection and oversight of delivery.

The role is flexible in location and will require occasional travel to and from the project sites and the London Head Office.

A TASTE OF THE DAY TO DAY

• 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, working closely with site teams, contractors, MSPs and internal stakeholders to ensure OT network solutions are implemented and maintained effectively.
• 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.

Health and Safety

Actively contribute to Zenobe's commitment to health and safety, wellbeing and sustainability by integrating these principles into daily responsibilities, ensuring a safe and supportive work environment, promoting both the physical and mental health of self and colleagues, and adopting sustainable and energy‑efficient practices to minimise environmental impact.

WHAT WE’RE LOOKING FOR

We realise that certain groups of people are less likely to apply for a role if they don’t meet 100% of the job requirements. To be absolutely clear: if you like the look of this job and think you could do it well, we encourage you to apply with a CV that highlights your transferable skills and experience. Above all, Zenobē is looking for collaborative, flexible, empathetic people who are interested in creating and promoting practical routes to a zero‑carbon world.

• OT / CNI Experience: This is an OT network role. You must have proven experience designing and securing networks, industrial (ICS/SCADA), or energy (utilities, renewables) environment. Corporate IT backgrounds will not be considered.
• Technical Documentation – experienced in producing high‑quality technical documents for internal and external audiences, including for procurement purposes.
• Network Change and Transformation: Demonstrable experience planning and delivering network change or transformation initiatives that improve resilience, scalability, security, performance or regulatory compliance, particularly within operational environments.
• Global Architecture: You must have experience designing and deploying complex, global WANs, specifically covering Europe, North America, and APAC.
• Expert‑Level Technical Acumen: Deep, design‐level (not just operational) expertise across the full stack: LAN, WAN, Wi‑Fi, Data Centre, SD‑WAN, unified comms, network management and network‑specific security (NGFWs, ZTNA, etc.).
• Team Leadership: Demonstrable experience in building, coaching, mentoring and providing technical leadership.
• Governance & Strategy: Proven ability to establish technical governance, act as a design authority and communicate strategy effectively at a leadership level.
• Commercial & Partner Management: Strong commercial skills with experience running formal RFPs, managing vendor negotiations and directing MSP performance.

Desirable Experience

• 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).

WORKING AT ZENOBE

We’re passionate about sustainability and are proud to offer a pioneering and collaborative working environment. We encourage our people to take ownership of their career progression and celebrate those that can think outside the box.

WHAT WE OFFER

• Up to 33% annual bonus for being awesome
• 25 days holiday, increasing with length of service up to 30 days, plus bank holidays
• Private Medical Insurance
• £1,500 training budget per year, to ensure you grow as we do
• EV Salary Sacrifice Scheme
• Pension scheme, up to 8% matched contributions
• Enhanced parental leave
• Cash back health plan
• Plus more

OUR APPROACH TO DIVERSITY AND INCLUSION

Our people are our strongest asset and the key determinant of our success, and we value a range of skillsets and perspectives. As an equal opportunity employer, we do not discriminate on the basis of any protected attribute. We work to provide equal opportunities and an inclusive work environment, where everyone is fairly treated in the application process and through their career at Zenobē. If there are any adjustments that would help improve your experience with Zenobē, please let us know when you apply.