ICA Technician

Thames Water; Greater London; On-site; GBP 39,000 - 47,000; Full time

Job summary

A leading water utility firm in Greater London is seeking an experienced ICA Technician to join their Wastewater team. You will handle maintenance on wastewater assets and collaborate with multidisciplinary teams to ensure health, safety, and operational efficiency. The position offers a salary up to £47,000 per annum, a company van, and various employee benefits including a generous pension scheme and flexible working arrangements. This role operates Monday to Friday with overtime opportunities that can enhance your earning potential considerably.

Benefits

Salary up to £47,000 per annum

Defined contribution pension

Annual leave: 24 days per year

Generous paternity leave

Enhanced maternity leave

Health and wellbeing benefits

Qualifications

• A good, practical understanding of operational plant and control systems.
• Experience in calibration and maintenance of front-line instrumentation.
• Ability to solve problems and identify potential issues.

Responsibilities

• Carry out maintenance on wastewater assets including planned and defect maintenance.
• Provide technical advice and coaching to team members.
• Ensure compliance with Health and Safety regulations.

Skills

HNC level or NVQ level 3 in instrumentation, control and automation

Understanding of Wonderware and Clear SCADA

Knowledge of relay logic and PLCs

Ability to read and fault-find from circuit diagrams

Excellent communication skills

Team player

Education

18th Edition (BS 7671) qualification

Full UK driving licence

Tools

PLC programming

Calibration tools

Job description

We currently have an opportunity for an experienced instrumentation, control & automation (ICA) technician to join our Wastewater team to be based out of Greenwich Storm – SE10 8JL. As a successful candidate you will work with multi‑disciplinary teams, alongside systems, mechanical and electrical technicians.

What you’ll be doing as the ICA Technician

• Ensuring the health, safety and well‑being of yourself, colleagues, contractors and visitors is always a top priority by complying with Health and Safety at Work regulations and Thames Water’s guidelines.
• Carrying out instrumentation, control and automation maintenance on a variety of wastewater assets, including planned and defect maintenance, installing, modifying and commissioning new plant equipment, diagnosing and repairing faults on systems and plants, and proactively identifying and reporting follow‑up work or areas for enhancement.
• Recording work and asset information to improve business performance, identifying possible future risks and recommending changes in the day‑to‑day work, and raising these for resolution as required.
• Providing specialist technical advice where appropriate, with up‑to‑date technical knowledge, and coaching, training and developing staff under supervision, including the apprenticeship programme.
• Delivering an excellent customer experience and positively contributing to overall customer satisfaction by interacting with all internal and external customers in a timely, professional, efficient, respectful and polite manner.

Base Location – Greenwich Storm – SE10 8JL

38 hours per week Monday‑Friday. 7:30 am – 3:36 pm plus Standby rota payments. Overtime opportunities can increase earning potential by up to an additional £8,000‑£10,000 per annum upon completion of essential company training.

All PPE, tools, and a van are provided when on duty and on call.

What you should bring to the role

• HNC level or NVQ level 3 (or equivalent) in an instrumentation, control and automation discipline.
• Preferable for you to have an 18th Edition (BS 7671) qualification.
• A good, practical understanding of operational plant and control systems.
• Understanding of Wonderware and Clear SCADA is desirable.
• Knowledge and experience working with relay logic and PLCs (Rockwell & Alan Bradley), including management and programming.
• Ability to read and fault‑find from circuit diagrams and previous experience with inverter drives.
• Experience in calibration and maintenance of front‑line instrumentation.
• A problem‑solver able to identify potential issues and implement solutions, or appropriately raise escalations.
• Excellent communicator, able to provide technical expertise to internal and external staff and contractors.
• Resilient, adaptable to the pressures of work and a constantly changing environment.
• Ability to work with minimum supervision, under own initiative, to design and meet standards.
• Knowledge and awareness of Health and Safety issues relevant to the industry.
• Team player capable of working in many different teams, showing respect for others, providing helpful feedback and supporting the development of others.
• Full UK driving licence.

What’s in it for you

• Salary up to £47,000 per annum, depending on skills and experience, plus a company van, tools and PPE.
• Defined contribution pension, contributory – up to 12% (2× employee contribution).
• Annual leave: 24 days per year, increasing to 28 with length of service, plus bank holidays.
• Generous pension scheme through AON.
• Generous paternity leave, including four weeks paid and an optional two weeks unpaid.
• Enhanced maternity leave, 26 weeks full pay and 13 weeks half pay.
• Benefits to support health, wellbeing and finances: annual health MOTs, physiotherapy, counseling, Cycle‑to‑Work schemes, shopping vouchers and life assurance.

Who are we

We’re the UK’s largest water and wastewater company, with more than 16 million customers relying on us daily to supply water for taps and toilets. We want to build a better future for all, helping our customers, communities, people and the planet to thrive.

Working at Thames Water

We’re a unique, rewarding and diverse place to work where every day can make a difference. As part of our family you’ll enjoy meaningful career opportunities, flexible working arrangements and excellent benefits.

Diversity and inclusion

We welcome applications from everyone and want to ensure you feel supported throughout the recruitment process. If you need adjustments – whether extra time, accessible formats or anything else – just let us know.

Support during crises

When a crisis happens, we all rally to support our customers. As part of Team Thames you’ll have the opportunity to sign up for frontline support as an ambassador. Full training is provided for this rewarding experience and an opportunity to learn more about our business and meet colleagues.