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.
