Network Engineer

New Today

What you’ll be doing

as an Operational Technology (OT) Network Engineer
  • Act as a Subject Matter Expert (SME) on network routing, switching, and associated OT network infrastructure.
  • Support the operational reliability of OT network systems to ensure 99.98% availability of critical assets.
  • Lead and support the delivery of network changes in line with change management and risk assessment procedures to minimise operational impact.
  • Maintain OT network standards, configurations, and firmware in accordance with defined policies and procedures.
  • Provide technical support across the design, build, and delivery of both high-level and low-level network solutions.
  • Deliver updates and upgrades to routers, switches, firewalls, and other network components at agreed intervals.
  • Manage and monitor OT network system security, including compliance audits, licence reviews, and obsolescence tracking.
  • Configure and support a wide range of technologies including Fortinet, CheckPoint, Cisco security appliances, Hirschmann HiVision, VPNs, Radius, Active Directory, SolarWinds, and Pulse Secure.
  • Manage routing and switching protocols including OSPF, RIP, BGP, MPLS, NAT, VLAN, STP, and policy-based routing.
  • Apply principles of cloud IaaS networking and assist in secure connectivity between cloud and on-prem systems.
  • Identify, assess, and implement security improvements in line with cyber and operational risk requirements.
  • Respond to incidents and provide 24/7 out-of-hours support for the OT network, as part of a shared on-call rota.
  • Collaborate with internal stakeholders across OT and operational teams to deliver network improvements and project support.
  • Support internal and capital delivery projects by providing network design, implementation, and technical oversight.
  • Engage in continuous improvement initiatives through lessons learned, internal feedback, and proactive issue resolution.
  • Maintain accurate records of preventative and reactive maintenance, and complete relevant documentation as required.
  • Identify skill gaps and contribute to personal development planning (PDP) to ensure continuous growth and learning.

    • Base location – Hybrid – Sewage Treatment Works, Reading
    Working pattern – 36 hours Monday to Friday

    What you should bring to the role

  • Higher education qualification (HNC or equivalent experience) in an engineering or IT discipline.
  • Security clearance to SC level or the ability to obtain it.
  • Proven experience in maintaining and supporting enterprise network infrastructure within a large organisation.
  • Industry-recognised networking certifications (e.g. CCNP, CCNA minimum, CheckPoint CCSE/CCSA).
  • Strong understanding of IP networking, including LAN, WAN, and routing protocols (OSPF, BGP, RIP, MPLS).
  • Experience managing network security technologies (e.g., firewalls, VPNs, anomaly detection).
  • Proficiency in network monitoring and management tools such as SolarWinds, Tufin, and Hirschmann HiVision.
  • Confident decision-making skills with the ability to balance operational, technical, and customer priorities.
  • Excellent communication and interpersonal skills, capable of working with technical and non-technical stakeholders.
  • Valid UK driving licence and ability to participate in an on-call support rota.
  • Strong documentation, report writing, and root cause analysis skills.
  • Proficient in MS Office, including Visio for network diagramming.
  • Understanding of IT and OT service delivery approaches (ITIL, Agile, Lean).

    • Desirable qualifications and experience

  • Experience working in the utilities or water industry.
  • Familiarity with SCADA and telemetry systems or willingness to learn.
  • Knowledge of mobile communications, remote access technologies, and cloud networking principles.
  • Understanding of virtualisation platforms (e.g., VMware, Hyper-V) and basic scripting (e.g., PowerShell, cmd).
  • Experience managing conflicting priorities and stakeholder demands in a high-pressure environment.
  • Exposure to OT cyber-physical systems and IT/OT convergence projects.

    • What’s in it for you?

  • Competitive salary up to £65,000 per annum, depending on experience.
  • Annual Leave - 26 days holiday per year, increasing to 30 with the length of service. (plus bank holidays).
  • Generous Pension Scheme through AON.
  • Performance-related pay plan directly linked to both company and individual performance measures and targets.
  • Access to lots of benefits to help you take care of you and your family’s health and wellbeing, and your finances – from annual health MOTs and access to physiotherapy and counselling to Cycle to Work schemes, shopping vouchers and life assurance.
    • Apply
    Location:
    Reading
    Job Type:
    FullTime

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