Location
Hampton, London (Hybrid working arrangement)

Hours
36 hours per week, Monday to Friday

Salary
Up to £60,000 per annum, depending on experience

About the Role
We are seeking a technically driven, detail-oriented RTU Development Engineer to join Thames Water and manage the full lifecycle of Remote Terminal Unit (RTU) application solutions across our clean and wastewater networks. You will lead the design, configuration, optimisation, and support of standardised RTU architectures to enable secure, resilient, and scalable telemetry and automation systems across thousands of distributed assets.

Your responsibilities will include leading RTU application development and lifecycle management, executing the full software development lifecycle, writing clean and testable code using IEC 61131 languages, validating firmware and communication protocols, and supporting RTU architecture and integration frameworks. You will collaborate closely with engineering teams, operational stakeholders, system integrators, and suppliers to deploy and optimise RTU solutions.

Additional duties involve providing second-tier technical support and fault diagnostics, translating business and operational requirements into technical specifications, managing RTU documentation and training content, and ensuring RTU systems meet quality, safety, and compliance standards including cybersecurity measures.

This is a key role within Thames Water’s Operational Technology landscape, offering the opportunity to work in a fast-paced, collaborative environment where your technical expertise will directly impact critical infrastructure resilience and operational efficiency.

Experience
- Proven experience in RTU programming, configuration, and lifecycle management.
- Demonstrable experience deploying and maintaining RTU systems in operational environments.
- Strong technical troubleshooting and fault resolution skills.
- Experience working with SCADA and OT systems in utilities or similar industries.
- Ability to balance competing priorities and make technical decisions in fast-paced settings.

About You
- Technically driven and detail-oriented individual who thrives in collaborative environments.
- Strong communicator able to translate complex technical content into business-relevant language.
- Committed to quality, safety, and compliance with a proactive approach to cybersecurity.
- Flexible and adaptable with a passion for operational technology and critical infrastructure.

Qualifications
- HND or equivalent qualification in a technical discipline such as Electrical, Control Systems, or Automation.
- Proficiency with RTU and SCADA platforms including Serck, Schneider, Brodersen, Rockwell, Xylem, ClearSCADA, Wonderware, and FT View.
- Programming knowledge of IEC 61131-3 languages (LD, FBD, SFC, ST, IL) and structured industrial software development.
- Strong understanding of telemetry protocols such as DNP3, WITS DNP3, Modbus, and MQTT.
- Familiarity with Windows OS, virtualisation, and cyber-secure network architectures (IP, VPN, LAN/WAN).
- Experience with relational databases and historian platforms (Oracle, SQL, PI, Wonderware Historian).
- Excellent documentation and technical report writing skills.
- Full UK driving licence.

Desirable Experience & Skills
- Experience in customer relationship management.
- Knowledge of OT system methodologies, architectures, and industry standards.
- Awareness of cyber-physical systems and their role in critical infrastructure resilience.
- Experience in the operational water industry or OT system delivery.