Instrumentation, Control & Automation (ICA) Technician

TN United Kingdom; Chesham; On-site; GBP 38,000 - 46,000; Full time

Job summary

A leading water and wastewater company is seeking an Instrumentation, Control & Automation technician for their Sewage Treatments Team in Chesham. The role involves maintaining and optimizing water production assets, ensuring compliance and operational efficiency. The technician will work with SCADA systems and PLCs, and provide training support for apprentices. This mobile role offers competitive earnings with standby and overtime opportunities, alongside comprehensive benefits and a commitment to diversity and inclusion.

Benefits

24 days holiday, increasing to 28

Contributory pension (up to 12%)

Annual Medical Assessments

Discounts and wellbeing support

Qualifications

• 6+ years' experience in Control, Instrumentation, and Automation.
• Ability to read circuit diagrams and fault find.

Responsibilities

• Install, commission, maintain, and repair water production assets.
• Investigate asset failures and perform repairs.
• Provide technical advice and training support for apprentices.

Skills

Operational Assets

Control Systems

Communication

Education

HNC/Level 4

Tools

SCADA

PLC

Relay Logic

Job description

Job Description

We have an exciting opportunity for an Instrumentation, Control & Automation (ICA) technician to join our Sewage Treatments Team based out of Chesham.

This is a mobile role, where you will work on various Treatment Works around the Colne North Area.

We seek a candidate who can work safely, efficiently, and effectively with minimal supervision, maintaining standards to meet statutory obligations and ensure asset availability and performance measures are upheld to manufacturers' standards.

An ICA Tech may operate and optimize processes and on-site equipment to ensure water quality compliance, safety, and operational efficiency, including out-of-hours work.

Responsibilities

• Install, commission, maintain, and repair water production assets, including level instrumentation, flow meters, and turbidity monitors.
• Work with SCADA systems, PLCs, and process control networks.
• Liaise with and supervise contractors and suppliers.
• Investigate asset failures and perform repairs to minimize process interruptions.
• Provide technical advice and training support for apprentices.

Location and Working Hours

Base Location: Chesham STW - HP5 1TH

Working pattern: 38 hours, Monday to Friday, 7:30 am – 3:36 pm, with standby and overtime opportunities that can increase earnings by approximately £8,000-£10,000 annually.

All PPE, tools, a company van, and a fuel card are provided.

Candidate Requirements

• Strong understanding of operational assets and control systems.
• Experience with SCADA systems, relay logic, and PLCs (Rockwell & Allen Bradley).
• Ability to read circuit diagrams and fault find, with experience with inverter drives.
• HNC/Level 4 education or 6+ years' experience, including apprenticeship, in Control, Instrumentation, and Automation.
• Valid driving license is essential.
• Safety-conscious, self-motivated, disciplined, and a team player.
• Excellent communication skills and proactive in suggesting improvements.

Benefits

• Salary up to £45,600, with standby and overtime pay increasing total earnings.
• 24 days holiday, increasing to 28 with service, plus bank holidays.
• Contributory pension (up to 12%).
• Annual Medical Assessments.
• Wider benefits including discounts and wellbeing support.

About Thames Water

We are the UK’s largest water and wastewater company, serving over 16 million customers. We aim to build a sustainable future, supporting communities and the environment. We offer diverse career opportunities, flexible working, and comprehensive benefits.

We are committed to diversity and inclusion, welcoming applications from all backgrounds and offering support throughout the recruitment process. Join us to make a difference, support our customers, and help protect water resources for future generations.