OT Solutions Architect - Secure SCADA & Industrial Tech

Southern Water; Worthing; Hybrid; GBP 85,000 - 100,000; Full time

Benefits offered by this job

Company bonus

Pension

Life assurance

Health benefits

Volunteer days

28 days holiday

Occupational health service

Retail discount app

Maternity leave & flexible return

Job summary

Southern Water in Worthing area is seeking an experienced OT Solutions Architect to lead secure, scalable OT designs for critical water and wastewater operations, spanning SCADA, PLC, DCS and IT/ OT interfaces.

You will work with engineering, IT, cybersecurity and external partners to deliver resilient architectures, align with IEC 62443, NIST and ISO 27001, and help modernise essential infrastructure for millions of customers.

Qualifications

• Extensive OT and ICS architecture experience.
• Experience with SCADA/PLC/DCS/RTU/HMI.
• Knowledge of industrial protocols and integration.
• Strong OT cybersecurity background and governance.
• Ability to lead cross-disciplinary teams across OT/IT.

Responsibilities

• Design OT architectures for SCADA, PLC, DCS, and HMI environments.
• Govern OT architectures across multiple operational environments.
• Collaborate with engineering, operations, IT, cybersecurity and vendors.
• Ensure designs align with IEC 62443, NIST and ISO 27001.
• Support deployment, testing, commissioning and migration activities.

Skills

OT Architecture

SCADA/PLC/DCS/HMI

Industrial Networks

OT Cybersecurity

Stakeholder Leadership

Data Integration

Education

TOGAF

SABSA

CISSP

GICSP

ISA/IEC 62443

Tools

OPC-UA

Modbus/TCP

DNP3

PROFINET

Ethernet/IP

BACnet

Purdue Model

IEC 62443

NIST

ISO 27001

Job description

Southern Water in Worthing area is seeking an experienced OT Solutions Architect to lead secure, scalable OT designs for critical water and wastewater operations, spanning SCADA, PLC, DCS and IT/ OT interfaces.

You will work with engineering, IT, cybersecurity and external partners to deliver resilient architectures, align with IEC 62443, NIST and ISO 27001, and help modernise essential infrastructure for millions of customers.