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’s Operational Technology (OT) team. In this role, you will lead the development, deployment, and lifecycle management of Remote Terminal Unit (RTU) applications critical to Thames Water’s clean and wastewater networks. You will design, configure, optimise, and support 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 ensure successful RTU solutions.

Additional duties include providing technical input to capital delivery and OT projects, offering second-tier technical support and fault diagnostics, managing RTU-specific documentation, standards, and training content, and ensuring RTU systems are robust, secure, and compliant with industry standards and cybersecurity measures.

This role offers the opportunity to work in a fast-paced, collaborative environment within the UK’s largest water and wastewater company, contributing to critical infrastructure that serves millions of customers daily.

Experience
- Proven experience in RTU programming, configuration, and lifecycle management.
- Demonstrable experience in RTU system deployment and maintenance within 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 communication skills with the ability to translate technical content into business-relevant language.
- Committed to quality, safety, and compliance.
- Able to manage conflicting priorities and technical project demands effectively.
- Enthusiastic about contributing to critical infrastructure resilience and operational excellence.

Qualifications
- HND or equivalent qualification in a technical discipline such as Electrical, Control Systems, or Automation.
- Proficiency in 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 (e.g., 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 systems and methodologies in water, utilities, or infrastructure sectors.
- Awareness of cyber-physical systems and their role in critical infrastructure resilience.
- Experience in operational water industry or OT system delivery.
- Ability to communicate complex technical concepts clearly to non-technical stakeholders.