Your role

The OT Functional Architect operates at enterprise and practice level to translate operational reality within water and utilities environments into robust functional and non‑functional requirements for enterprise SCADA and IT/OT convergence solutions. The role ensures that proposed architectures are safe, operable, maintainable, and resilient, while enabling scalable transformation across multi‑site estates with minimal operational disruption.

3. Key responsibilities

Lead enterprise and site-level discovery of OT capabilities, including PLC, SCADA, HMI, control strategies, alarm philosophies, interlocks, and safety constraints.
Capture and model operational processes across the asset lifecycle, including commissioning, maintenance, incident response, overrides, escalation, and ICC-to-site handover.
Define functional and non-functional requirements for remote monitoring and control, including authorisation models, auditability, fallback modes, and resilience expectations.
Identify, assess, and quantify migration constraints across brownfield environments, including cutover strategies, downtime tolerances, rollback requirements, and legacy/vendor limitations.
Develop site categorisation models (criticality, complexity, connectivity) and readiness assessments to inform phased enterprise rollouts.

Act as the OT functional authority within IT/OT convergence initiatives, ensuring alignment between operational needs, solution architecture, and delivery approaches.

Your profile

You’ll have a strong hands‑on background in OT/ICS engineering within water or utilities, with direct experience of PLC and SCADA integration, commissioning, and operating safely in regulated environments. You’re comfortable working across complex brownfield estates and multi‑vendor OT landscapes, and can translate operational realities into clear functional requirements and architectural inputs. You work confidently with a wide range of stakeholders and stay aware of emerging IT/OT technologies and patterns.

Key strengths

OT/ICS engineering expertise, including safe change, alarm management, and operational governance
Ability to bridge operations, engineering, and leadership, with awareness of modern IT/OT and digital trends

Make it real – what does it mean for you?

Open access to digital learning platforms
Active employee networks promoting diversity, equity and inclusion like OutFront, CapAbility or Women@Capgemini

Capgemini is proud to be a Disability Confident Employer (Level 2) under the UK Government’s Disability Confident scheme. As part of our commitment to inclusive recruitment, we will offer an interview to all candidates who

Declare they have a disability, and
Meet the minimum essential criteria for the role.
Please opt in during the application process.

Capgemini. Make it real.

Need to know

All roles will require a level of security clearance; BPSS OR Security Clearance OR Developed Vetting.
You can bring your whole self to work. At Capgemini building an inclusive future is part of everyday life and will be part of your working reality. We have built a representative and welcoming environment, for everyone.

About Capgemini

Capgemini is an AI-powered global business and technology transformation partner, delivering tangible business value. We imagine the future of organisations and make it real with AI, technology and people. With our strong heritage of nearly 60 years, we are a responsible and diverse group of over 420,000 team members in more than 50 countries. We deliver end-to-end services and solutions with our deep industry expertise and strong partner ecosystem, leveraging our capabilities across strategy, technology, design, engineering and business operations. The Group reported 2025 global revenues of €22.5 billion.

Make it real | www.capgemini.com