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
Car Allowance: £4,500
26 days holiday per year, increasing to 30 with length of service (plus bank holidays)

About the Role
We are seeking a self-motivated, passionate, and proactive Water 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, across critical water treatment works, reservoirs, and booster stations in your region.
This role offers an exciting opportunity to contribute to the digital transformation of the UK’s largest water company, supporting reliable, resilient, and secure SCADA operations that keep water services running 24/7.

Key Responsibilities:
- Maintain high availability of site-based SCADA platforms targeting 99.2% uptime or higher
- Deliver planned maintenance including health checks, patches, and hotfixes
- Implement and test disaster recovery plans and complete annual backups
- Perform SCADA system updates and upgrades ensuring OT/ICA assets are current
- Respond to SCADA-related service requests within 15 working days
- Implement and maintain security improvements to enhance OT system resilience
- Participate in in-hours and out-of-hours support rota for SCADA fault response
- Provide emergency technical support and fault rectification to operations teams
- Use OT fault database proactively to optimise service delivery and reduce repeat incidents
- Escalate recurring faults for investigation and mitigation planning
- Champion OT Change Management and Risk Assessment processes
- Provide technical input during design and delivery of Capital Delivery projects
- Ensure all OT system changes are controlled, documented, and authorised
- Supply SCADA asset, alarm, and event data reports to support operations and compliance
- Identify and manage key local OT stakeholders to maintain alignment and effective delivery
- Act as subject matter expert for Site SCADA systems and OT architecture
- Mentor and provide technical support to ICA Technicians and operational teams
- Foster 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
- 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 ability to build strong working relationships with operations teams
- Strong customer service orientation with effective communication across technical and non-technical audiences
- Self-motivated, passionate, and proactive with a collaborative approach
- Ability to participate in an on-call rota and provide emergency technical support

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)