Location
London, Thames Valley-based offices and operational water sites (Hybrid working)

Hours
36 hours per week, Monday to Friday, with participation in an on-call rota for out-of-hours support

Salary
Up to £55,000 per annum, depending on experience

About the Role
We are seeking a self-motivated, passionate, and proactive Site SCADA Systems Engineer to join our Operational Technology (OT) team. You will be responsible for the daily maintenance and fault-finding of Site SCADA systems, including AVEVA System Platform / Wonderware, Iconics, and RSView, supporting critical water treatment works, reservoirs, and booster stations across your region. This role plays a key part in the digital transformation of the UK’s largest water company, ensuring reliable, resilient, and secure SCADA operations that keep water services running 24/7.

Key responsibilities include:
- Maintaining high availability of site-based SCADA platforms with a target uptime of 99.2% or higher
- Delivering planned maintenance such as health checks, patches, hotfixes, and disaster recovery testing
- Implementing system updates and upgrades, ensuring OT/ICA assets are current
- Responding to SCADA-related service requests within 15 working days
- Enhancing site OT system resilience through security improvements
- Participating in in-hours and out-of-hours support rosters for fault response
- Providing emergency technical support and fault rectification
- Using fault databases to optimise service delivery and reduce repeat incidents
- Escalating recurring faults for root cause analysis and mitigation
- Supporting OT Change Management and Risk Assessment processes
- Providing technical input during Capital Delivery projects
- Ensuring all OT system changes are controlled, documented, and authorised
- Supplying SCADA asset, alarm, and event data reports for operations and compliance
- Managing local OT stakeholders to maintain alignment and effective delivery
- Acting as a subject matter expert and mentoring ICA Technicians and operational teams
- Fostering collaboration within the wider OT Service & Technical team to deliver consistent, high-quality support

Experience
- Experience in maintenance and/or delivery of SCADA or ICA systems
- Proven problem-solving skills balancing technical, operational, and customer-focused decision-making
- Strong customer service orientation with effective communication across technical and non-technical audiences
- Experience managing competing priorities and delivering both reactive and project-based work (desirable)
- Knowledge or prior experience in the water industry, utilities, or a similar regulated sector (desirable)
- Experience negotiating with Operations to secure funding for OT hardware (desirable)

About you
- Excellent interpersonal skills with the ability to build strong working relationships with operations teams
- Self-motivated, proactive, and passionate about operational technology and SCADA systems
- Ability to work collaboratively within a team and mentor others
- Committed to delivering reliable and secure SCADA operations that support critical water infrastructure

Qualifications
- Recognised technical qualification in OT, ICA, or SCADA systems
- Hands-on expertise in site-based SCADA and PLC systems with up-to-date knowledge of industry best practices
- Proficiency in AVEVA System Platform / Wonderware and legacy SCADA systems such as Iconics and RSView
- Strong IT proficiency including Microsoft Office and Excel for data analysis and reporting
- Knowledge of extended SCADA programming, MS applications, and IP-based communications (LAN/WLAN)
- Technical problem-solving and fault resolution expertise (desirable)
- Understanding of basic LAN network design and troubleshooting principles (desirable)
- Awareness of network redundancy and resilience concepts such as VLANs, subnets, and redundancy protocols (desirable)