OT Field Engineer

Information Commissioner's Office

OT Field Engineer responsible for maintenance and commissioning of operational technology systems in water management. Ensuring real-time monitoring and control of water distribution processes.

Posted 7/21/2026full-timeMilton Keynes • 🇬🇧 United KingdomMid-LevelSenior💰 £47,500 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in the maintenance, repair, and commissioning of Operational Technology (OT) hardware and systems, with a strong focus on PLC and HMI programming, troubleshooting, and compliance with regulatory standards. Proficient in performing firmware upgrades, preventive maintenance, and providing technical support for integrated hardware and software systems.

Highest-signal resume keywords

PLC Programming and Fault FindingTelemetry Hardware MaintenanceIndustrial Control Systems (ICS)SCADA Systems FamiliarityOT Cybersecurity Principles

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Operational Technology (OT) MaintenanceProgrammable Logic Controller (PLC)HMI Software and HardwareTelemetry Outstation RepairIndustrial Control NetworksIP Networking PrinciplesFirmware UpgradesPreventive MaintenanceProcess Automation ModificationsTechnical Troubleshooting

Soft Skills

Problem SolvingMethodical ApproachTechnical Support

Tools & Technologies

Rockwell PlatformsSchneider Electric PlatformsEthernetFieldbusRS232/485Uninterruptible Power Supply (UPS)Low Voltage (LV) Electrical Systems

Certifications & Qualifications

HNC/HND in Electrical EngineeringCity and Guilds/NVQ Level 3 Electrical Qualification

Industry Keywords

Operational Technology (OT)Water and Water RecyclingIndustrial Control Systems (ICS)SCADA SystemsCybersecurity Principles

Tech Stack

Tools & technologies

Cyber Security

About the role

Key responsibilities & impact

As an OT Field Engineer, your primary focus will be the maintenance, repair, and commissioning of operational technology (OT) hardware, systems, and networks.
This critical infrastructure is essential for the real-time monitoring and control of operational plant and processes across our Water and Water Recycling estate.
Diagnostics, repair and replacement of OT field hardware to include Telemetry outstations and associated I/O modules, Power supplies, PLCs and HMIs, Industrial Control Systems (ICS), Modems, Routers and Switches.
Undertake minor modifications to process automation and control systems as required to support regulatory compliance and process continuity.
Undertake preventive maintenance activities on OT field hardware, systems/networks.
Perform firmware and software upgrades/patching of OT equipment to maintain security controls and compliance.
Support Water and Water Recycling operational teams during planned maintenance activities to ensure OT assets are correctly shut down and brought back online to mitigate operational impact.
Undertake site surveys, installation and commissioning of OT hardware, systems and networks.
Perform minor PLC modifications and Telemetry IO wiring changes to support the introduction of new instrumentation and plant.
Provide technical on-site support to OT framework partners for the service integration of new, and or modified OT field hardware, software, systems and networks.
Undertake post installation quality assurance audits of new, or modified OT installations to ensure they adhere to defined standards.

Requirements

What you’ll need

Ideally be educated to HNC/HND (or equivalent) level or have time served experience in maintenance, commissioning or field service of electrical, instrumentation or telecommunications systems with a City and Guilds /NVQ level 3 electrical qualification.
Experience of, and or formal training in programming and fault finding of Programmable Logic Controller (PLC) or process control equipment would be an advantage.
Ideally educated to at least ONC/HNC level in Electrical, Electronic, or Control Engineering (or equivalent experience).
Practical experience with the maintenance and repair of telemetry outstation hardware and software.
Proven ability to methodically troubleshoot and resolve complex technical problems across integrated hardware and software systems.
Demonstrated understanding and knowledge of PLC and HMI hardware and software, with specific experience in vendor platforms such as Rockwell and/or Schneider Electric.
Familiarity with site-level SCADA systems, ideally including Rockwell platforms.
Understanding and knowledge of industrial control networks and protocols (e.g., Ethernet, Fieldbus, RS232/485).
Understanding of IP networking principles (Ethernet/LAN/WAN) and IP addressing fundamentals.
Knowledge of communication technologies relevant to dispersed sites (e.g., radio, mobile, ADSL).
Familiarity with industrial (OT) cybersecurity principles and controls.
Good working knowledge of DC/AC supplies, Uninterruptible Power Supply (UPS) systems, and Low Voltage (LV) electrical distribution installations.

Benefits

Comp & perks

Personal private health care
Generous double match pension – contribute 7% and Anglian Water will contribute 14%, giving a total contribution of 21%
24-hour Virtual GP service for you and your household
25 days annual leave – rising with length of service and the ability to buy more
Life assurance (up to 8 x salary)
Personal accident cover (up to 5 x salary)
Excellent family friendly policies, such as 26 weeks full pay for maternity / adoption leave, as well as 4 weeks paid paternity / partner leave.
Opportunity for shared parental pay
Bonus scheme
Flexible benefits and working culture to support your wellbeing and lifestyle.