Location
Hampton, London (Hybrid) – Sewage Treatment Works, Reading

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 delivery-focused, results-oriented Data Systems Engineer who thrives in a collaborative, team-focused culture. You will work closely with engineering teams, operations, internal stakeholders, and external suppliers to lead the secure integration, management, and optimisation of Operational Technology (OT) data systems that underpin Thames Water’s digital transformation journey.

In this role, you will manage and develop OT data structures and system integrations across Thames Water’s water and wastewater infrastructure. You will play a key role in transitioning our data architecture, leading database re-structuring efforts, decommissioning legacy systems, and supporting the implementation of enterprise-scale data platforms such as Aveva PI. Your work will ensure consistent, efficient, and secure data flow from SCADA systems to enterprise applications.

Key Responsibilities:
- Manage and maintain secure integration of SCADA and OT data with enterprise systems.
- Lead planning, design, and implementation of database architecture upgrades and data migrations.
- Develop and maintain data reporting systems, stream processing, and data visualisation tools.
- Support decommissioning of legacy platforms including the Oracle estate.
- Build datasets to enable deep insight into OT asset performance and analytics.
- Ensure availability of SCADA and OT data systems with high uptime targets (e.g. 99.98%).
- Oversee transition and integration of site and regional SCADA systems into central architecture.
- Manage data flows and integrity across PI Historian, SCADA historians, and centralised interfaces.
- Identify and implement efficient methods to access and manage structured and unstructured data.
- Collaborate with internal stakeholders, delivery teams, and external system integrators to support project implementation and system commissioning.
- Liaise with SCADA vendors and operational users to define service level requirements and ensure quality assurance.
- Provide second-tier technical support for SCADA and OT data-related issues.
- Define and enforce data configuration and integration standards.
- Support creation of technical documentation, commissioning reports, and snagging outputs.
- Develop and maintain business processes and roadmaps for OT data systems and archives.
- Provide technical input to tender processes and assess solutions commercially and qualitatively.

Experience
- Engineering experience covering SCADA, database programming, and OT data architecture.
- Proven technical problem-solving skills under operational pressures.
- Experience supporting SCADA and historian systems such as Wonderware, ClearSCADA, Aveva PI, and Oracle.
- Strong understanding of software development practices including .NET, C#, and test-driven development.
- Experience managing structured and unstructured data sets and stream processing in live OT environments.
- Familiarity with telemetry protocols including DNP3, WITS DNP3, Modbus, and MQTT.
- Solid understanding of virtualised environments and secure IP communications (LAN, WAN, VPN).

About you
- Effective stakeholder engagement and technical communication skills.
- Ability to work collaboratively in a team-focused environment.
- Strong technical report writing skills.
- Experience managing technical support in fast-paced project environments is desirable.
- Background in the water industry or similar utility sector is advantageous.
- Ability to translate technical concepts into business-friendly language.
- Awareness of cyber-physical systems and critical infrastructure resilience is a plus.

Qualifications
- HNC or equivalent in a relevant technical field such as Control Systems or Electrical Engineering.
- Experience supporting relational database systems (e.g. SQL, Oracle, PI Historian).
- Proficiency in Microsoft Office and VISIO for reporting and documentation.
- Desirable: Experience in OT operations or asset delivery in the water sector.
- Desirable: Familiarity with OT methodologies, digital transformation strategies, and asset-centric data solutions.