Location
London with hybrid working from Thames Valley-based offices and operational water sites.

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, plus £4,500 car allowance.

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 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 targeting 99.2% uptime or higher.
- Delivering planned maintenance such as health checks, patches, and hotfixes.
- Implementing and testing disaster recovery plans and completing annual backups.
- Updating and upgrading Site SCADA systems and programmable OT/ICA assets.
- 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 OT fault database to optimize 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 design and delivery of 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 key local OT stakeholders to maintain alignment and effective delivery.
- Acting as a subject matter expert and providing mentoring and technical guidance.
- 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.
- Experience managing competing priorities and delivering both reactive and project-based work is desirable.
- Knowledge or prior experience in the water industry, utilities, or a similar regulated sector is advantageous.
- Experience negotiating with Operations to secure funding for OT hardware is desirable.

About you
- Excellent interpersonal skills with the 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 commitment to delivering high-quality support.
- 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 is desirable.
- Understanding of basic LAN network design and troubleshooting principles is desirable.
- Awareness of network redundancy and resilience concepts such as VLANs, subnets, and redundancy protocols is desirable.