Principal Engineer

In this important role you will have the opportunity to make a significant contribution to the Control and Instrument (ICA) team in Thames Water Above Ground Engineering to achieve Thames Water’s Asset Management Period AMP8 ambitions and beyond.

Responsibilities

• Undertake ICA design work, including scope narratives, system architecture drawings, process narratives, and instrument and I/O lists.
• Ensure engineering works comply with regulatory requirements and internal asset standards.
• Provide technical support to Operations and Projects in resolving complex ICA issues.
• Lead technical sign-off and assurance throughout project delivery, including handover stages.
• Mentor and support the development of junior staff.
• Provide technical input into Project Definition Briefs.
• Manage and review engineering design partner deliverables.
• Provide ICA support to the process team and others in responding to waiver requests against Thames Water standards.
• Contribute ICA expertise to incident investigations and follow‑up remediation activities.
• Lead ICA‑related Hazard Reviews (HazRev) to assess process safety at major sites and identify remediation measures to improve water quality.

Location

Hybrid – Clearwater Court – RG1 8DB, weekly attendance in the office required.

Working Pattern

36 hours per week, Mon‑Fri.

Required Qualifications

• Recognised Control & Instrumentation technical leader with extensive, demonstrable ICA experience.
• Significant experience in ICA design, including data networks and some Safety Instrumented Systems (SIS), with familiarity in the water or utilities sector (or equivalent industries).
• Strong knowledge of the regulatory environment, including detailed understanding of DSEAR, ATEX, and hazardous area requirements, and the ability to specify these effectively.
• Proven ability to collaborate with and influence senior stakeholders.
• Degree‑qualified (or equivalent) in an engineering discipline, with professional chartership achieved or working towards it via a defined route.
• Good understanding of P&IDs, HAZOP, HAZID, OPMAN, and similar design and risk review processes.
• Awareness of contractual and commercial considerations, particularly when supporting project delivery teams.
• Strong understanding of project delivery, including constructability, commissioning, operability, maintainability, spares strategy, and security considerations.

Preferred Qualifications

• Demonstrated solid understanding of water and wastewater processes and associated process control systems.

Benefits

• Competitive salary from £75,000 to £100,000 per annum, depending on experience.
• 26 days holiday per year, increasing to 30 with length of service (plus bank holidays).
• Performance‑related pay plan directly linked to company performance measures and targets.
• Generous Pension Scheme through AON.
• Private Medical Health Care.
• Access to lots of benefits to help you take care of you and your family’s health and wellbeing, and your finances – from annual health MOTs and access to physiotherapy and counselling, to Cycle to Work schemes, shopping vouchers and life assurance.

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