OT Field Engineer

Anglian Water Services; Tetford; Hybrid; GBP 46,000; Full time

Job summary

A leading utility company in the UK is seeking an OT Field Engineer to focus on the maintenance, repair, and commissioning of OT systems. This field-based role involves collaborating with operational teams, performing diagnostics on hardware, and ensuring compliance with regulations. The ideal candidate will have a background in electrical engineering and hands-on experience with PLC systems. Competitive salary and benefits are offered, with a flexible working culture and opportunities for advancement.

Benefits

Personal private health care

25 days annual leave

Business use of company van

Competitive pension scheme

Bonus scheme

Flexible benefits

Life Assurance

Paid time off for illness

Excellent Family Leave package

Qualifications

• Educated to at least HNC/HND level or equivalent experience in electrical, instrumentation or telecommunications.
• Experience in programming and fault-finding in PLC systems is desirable.
• Ability to troubleshoot complex technical problems.

Responsibilities

• Maintain and repair OT field hardware and associated systems.
• Undertake site surveys and installations.
• Perform firmware and software updates to ensure compliance.

Skills

Maintenance and repair of OT systems

Troubleshooting PLC problems

Knowledge of industrial control networks

Understanding of cybersecurity principles

Knowledge of communication technologies

Education

HNC/HND in Electrical, Electronic, or Control Engineering

City and Guilds/NVQ level 3 electrical qualification

Tools

PLC systems

SCADA systems

Telemetry hardware

Job description

Salary

Circ£46,000 salary dependant on skills and experience + Company Vehicle (All PPE, Tools, and fuel card provided)

Location

Field Based covering Suffolk/Norfolk; Ideally based around the Bury St Eds/Thetford area

Permanent

Full time role 37 Hours with flexibility for part-time + Overtime + Standby Rota

Operational Technology (OT)

Operational technology (OT) refers to the set of digital assets which are at the very heart of Anglian Waters industrial operations. Operational technology systems are deployed throughout our geographical region to enable remote monitoring and control of water collection, treatment and distribution processes.

What will you be doing?

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.

You will also need to work collaboratively with other operational teams across water and Water recycling and provide technical support in the diagnosis of instrumentation, and control issues to mitigate non‑compliance and process continuity risks.

Key Responsibilities

• 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 I/O 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.

What do you 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, alongside some of the following;

• 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.

What benefits do we offer?

• Personal private health care
• 25 days annual leave – rising with length of service
• Business use of company van plus access to tools and all uniform and PPE
• Competitive pension scheme – Anglian Water double‑matches your contributions up to 6% (we put in 18% total)
• Bonus scheme
• Flexible benefits to support your wellbeing and lifestyle.
• A flexible working culture
• Life Assurance at eight times your salary
• Personal Accident cover – up to 5x your salary
• Paid time off when you’re physically and mentally unwell
• An excellent Family Leave package – to help you support your family

We are passionate and committed to the learning and development of our people making sure they have the right skills and knowledge to be successful and to help achieve their potential. We also take Health and Safety very seriously in everything that we do through one of our key values “Safer Every Day”.

Closing date: 11/01/26

Interviews: Late January

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