IT/0T Consultant & Architect

Square One Resources; Greater London; On-site; GBP 108,000 - 146,000; Part time

Job summary

Square One Resources seeks an IT/OT Consultant & Architect for an immediate start in Central London, 2–3 days per week. This contract role focuses on defining OT data foundations and architectures across multi-site manufacturing environments, leveraging OPC UA, MQTT, and UNS principles to enable real-time visibility and AI-ready ecosystems.

The candidate will lead assessments, workshops, and governance design, delivering roadmaps and business cases aligned with cybersecurity and digital

Qualifications

• Experience in OT data architecture and UNS/data architecture.
• Capability to conduct multi-site OT assessments and maturity evaluations.
• Ability to design scalable OT data foundations and reference architectures.

Responsibilities

• Conduct multi-site OT assessments, maturity evaluations, and discovery activities across manufacturing facilities to establish the OT baseline, identify gaps, and define standardization opportunities.
• Lead workshops, site surveys, Gemba walks, and stakeholder interviews to analyze OT systems, industrial networks, data flows, PLC/SCADA/Historian environments, and IT/OT integration landscapes.
• Define scalable OT Data Foundation and North-Star Reference Architectures encompassing edge, cloud, cybersecurity, integration, and enterprise manufacturing data platforms.
• Design and standardize OT information models, asset hierarchies, naming conventions, and governance frameworks to enable consistent, trusted, and interoperable manufacturing data across sites.
• Architect industrial connectivity and data integration solutions using OPC UA, MQTT, Historians, and Unified Namespace (UNS) principles to support real-time data access, enterprise visibility, and AI-ready manufacturing ecosystems.
• Develop transformation roadmaps, technology standards, deployment strategies, and business cases that align OT modernization initiatives with operational excellence, cybersecurity, and digital manufacturing objectives.

Skills

OT data architecture

Industrial networks

Unified Namespace (UNS)

OPC UA

MQTT

Historians

Tools

OPC UA

MQTT

Historians

Unified Namespace (UNS)

Job description

Job Title: IT/0T Consultant & Architect - Immediate start
Location: Central London - 2/3 days a week
Salary/Rate: 690
Start Date: Immediate start!
Duration: 4 months

A global technology and engineering organisation delivering digital, infrastructure, and industrial solutions across multiple sectors are looking for an experienced IT/OT Consultant & Architect with excellent UNS/data architecture experience is immediately required by global professional services for high profile manufacturing industry assignment. Candidates applying must be able to work on client site, 2/3 days per week in Central London.

IT/OT Consultant & Architect - Key Responsibilities

• Conduct multi-site OT assessments, maturity evaluations, and discovery activities across manufacturing facilities to establish the OT baseline, identify gaps, and define standardization opportunities.
• Lead workshops, site surveys, Gemba walks, and stakeholder interviews to analyze OT systems, industrial networks, data flows, PLC/SCADA/Historian environments, and IT/OT integration landscapes.
• Define scalable OT Data Foundation and North-Star Reference Architectures encompassing edge, cloud, cybersecurity, integration, and enterprise manufacturing data platforms.
• Design and standardize OT information models, asset hierarchies, naming conventions, and governance frameworks to enable consistent, trusted, and interoperable manufacturing data across sites.
• Architect industrial connectivity and data integration solutions using OPC UA, MQTT, Historians, and Unified Namespace (UNS) principles to support real-time data access, enterprise visibility, and AI-ready manufacturing ecosystems.
• Develop transformation roadmaps, technology standards, deployment strategies, and business cases that align OT modernization initiatives with operational excellence, cybersecurity, and digital manufacturing objectives.