Instrumentation, Controls & Automation Technician (ICA)

Job title Instrumentation, Controls & Automation Technician (ICA)  Division Asset Operations & Capital Delivery Location Hybrid
- Chesham (STW) - HP5 1TH
Contract type Permanent Full/Part-time Full-time Hours 38 Hours per week, Monday
- Friday, 7:30am - 3:36pm plus Standby rota payments & Overtime opportunities. Salary Up to £57,000 per annum, depending on skills and experience Job grade A Closing date 19/08/2026

We currently have an exciting opportunity for an Instrumentation, Control & Automation (ICA) or Control and Instrumentation (C&I) technician to join our Waste & Bioresources Operations team in Chesham.

This is a mobile role, where you would be required to work on various wastewater treatment works and pumping stations around the Chesham, Colne and Sudbury area.

We are looking for someone who can work in a safe, efficient, timely and effective manner with minimum supervision while maintaining the required standards to ensure that our statutory obligations are met and that asset availability and the associated performance measures are maintained to manufacturers  standards.

An ICA Technician may also operate and optimise processes and on-site equipment to ensure delivery of water quality compliance, safety, and operational efficiencies both in and out of normal hours.

What you’ll be doing as an Instrument Control Automation Technician (Control and Instrumentation Technician)

• The role would include installations, commissioning, maintenance, and repairs of water production assets, including level instrumentation, flow meters, and Tand VM’s turbidity monitors.
• Working with technology, including SCADA (Supervisory Control and Data Acquisition) systems, associated PLCs (Programmable Logic Controllers), and Process control networks.
• Liaise with and supervise contractors and suppliers where necessary.
• This vital role also involves the investigation into asset failures and the implementation of subsequent repairs as quickly and efficiently as possible to avoid interruptions to the water supply process.
• You will be responsible for providing specialist technical advice where appropriate, with up-to-date technical knowledge, and providing training support for technical apprentices.

Base Location –
Due to the nature of this role, travel to multiple sites will be required. You would be contractually based at Chesham STW, Latimer Road, Chesham, HP5 1TH
.

Working Pattern: 38 hours per week, Monday
- Friday, 7:30 am
-3:36 pm, plus standby & overtime opportunity, increasing earnings by a potential £8,000 - £10,000 upon completion of essential company training.

Equipment: All PPE, tools, a company van and a fuel card are provided.
You must have Knowledge and experience working with relay logic and PLCs (Rockwell & Allen-Bradley), which will include management and programming.

What you should bring to the role

To thrive in this role, the essential criteria you’ll need are:

• Ideally, you will be qualified to HNC level or otherwise NVQ level 3 (or equivalent) in an instrumentation, control and automation discipline.
• Preferably, for you to have an 18th Edition (BS7671) qualification.
• A good, practical understanding of operational plant and control systems is essential.
• An understanding of Wonderware and ClearSCADA is desirable.
• Knowledge and experience working with relay logic and PLCs (Rockwell & Alan Bradley), which will include management and programming.
• The ideal candidate will have the ability to read and fault-find from circuit diagrams, as well as have previous experience with inverter drives.
• We are looking for someone with experience in calibration and maintenance of front-line instrumentation.
• A problem solver, able to identify potential issues and implement solutions, or escalate if required.
• An excellent communicator, providing technical expertise to Internal and External staff and contractors.
• Resilient, adapting to the pressures of work and working in a constantly changing environment.
• Ability to work with minimum supervision, under own initiative to design and standards.
• Knowledge and awareness of Health and Safety issues relevant to the industry.
• Team player who can work in many different teams, showing respect for…