Operational Technology Architect - London - Outside IR35 at TrinIT Group, London, 3 Months, £500 per day

TrinIT Talent are looking for a OT Architect to come on board for a 3 month contract based in Location. This role falls Outside of Scope of IR35 and is paying £500 per day.

Job Title: OT Architect

Role Summary

The OT Architect is responsible for designing, governing, and enabling seamless integration between Operational Technology (OT) and Information Technology (IT) environments. The role ensures secure, scalable, and standardized architectures that support manufacturing, industrial operations, data platforms, and enterprise systems while adhering to cybersecurity and operational reliability requirements.

Key Responsibilities

OT-IT Architecture & Standardization

• Define OT-IT integration architecture, standards, and design blueprints
• Align OT systems with enterprise IT, cloud, and security architectures
• Apply Purdue Model and zone-based design principles
• Ensure compliance with ISA/IEC 62443 and enterprise security policies

Planning, Assessment & Design

• Assess current OT and IT environments and identify integration gaps
• Design target-state architectures for:
  • OT networks and systems
  • MES, historians, data platforms, ERP, and cloud integration
• Produce architecture diagrams, HLDs/LLDs, and technical documentation

Implementation & Delivery Support

• Provide architectural guidance during implementation and UAT
• Support vendor coordination, system integration, and issue resolution
• Review deployments to ensure adherence to approved designs

Security & Risk Management

• Design secure OT-IT connectivity (DMZs, segmentation, Firewalls)
• Mitigate operational, cybersecurity, and reliability risks
• Ensure minimal impact to production and safety systems

Required Technical Skills

• Deep understanding of OT network design, segmentation, and cybersecurity
• OT & IT network architecture and security
• OT/ICS systems: PLC, SCADA, DCS
• Knowledge of OT-IT integration patterns (MES, historians, cloud, analytics)
• Vendor expertise (Aruba, Cisco, Juniper, Palo Alto)
• Enterprise LAN/WAN/WLAN architecture & design
• Strong architecture documentation and stakeholder communication

Experience & Qualifications

• 8-12+ years in OT, IT, or industrial integration roles
• Proven experience as an OT-IT Architect or Lead Engineer
• Hands-on experience with industrial vendors (Rockwell, Siemens, Schneider, etc.)
• Experience in manufacturing/industrial environments preferred

Key Deliverables

• OT-IT architecture standards and blueprints
• Integration designs and implementation support
• Implementation and UAT support
• BAU-ready documentation and handover

If you feel you have the right experience for this role, please get in touch by sending your CV in Word format to (see below)

TrinIT Talent will consider applications based only on skills and ability and will not discriminate on any grounds.