OT Enterprise Solutions Engineer

Salary: £130,000 - 143,000 per year

Requirements:

• Extensive experience designing enterprise OT/ICS architectures within critical infrastructure, industrial, utilities or manufacturing environments.
• Proven experience leading OT architecture, security and network design across complex programmes.
• Strong understanding of IT/OT convergence and enterprise integration.
• Practical expertise applying IEC 62443 and secure OT architecture principles.
• Knowledge of industrial protocols such as Modbus, OPC-UA, Profinet and DNP3.
• Experience developing architecture standards, governance and reference designs.
• Strong stakeholder management and the ability to influence technical and business leaders.
• Familiarity with enterprise architecture frameworks such as TOGAF or SABSA.
• Experience within large, highly regulated organisations.
• Knowledge of building management systems, physical security, energy management or data centre technologies.
• Familiarity with NIST CSF, NIST SP 800-82, ISO 27001 or similar security frameworks.
• Experience with legacy OT environments, supplier management and technical assurance.
• Relevant architecture, networking, cybersecurity or IEC 62443 certifications.

Responsibilities:

• Own and develop our enterprise OT architecture strategy, roadmap and target-state designs.
• Define architecture principles, standards, reference architectures and design patterns.
• Lead the integration of OT with IT, IoT, cloud and edge technologies while maintaining appropriate security and operational boundaries.
• Ensure our architecture aligns with business objectives, resilience, safety, security and operational requirements.
• Apply industry standards, including IEC 62443, to deliver secure-by-design OT solutions.
• Chair and contribute to architecture governance, design reviews and technical decision-making.
• Collaborate with engineering, infrastructure, cybersecurity, operations and delivery teams to produce integrated end-to-end solutions.
• Provide architectural guidance throughout delivery, from concept through implementation and transition into service.
• Identify and manage architecture risks, dependencies and technical decisions.
• Evaluate supplier solutions and ensure technology choices align with our enterprise architecture rather than vendor-led designs.

Technologies:

• Cloud
• IoT
• Network
• Profinet
• Security
• TOGAF
• DevOps

More:

We are seeking an experienced OT Enterprise Solutions Engineer to lead the development and evolution of our enterprise Operational Technology architecture across a complex, global environment. This is a 6-month contract role based in London, Sheffield or Birmingham, with 3 days per week onsite, starting as soon as background checks have been completed. The rate is £500 to £550 a day inside IR35. You will work within established architecture governance as the technical authority for OT architecture, driving standardisation, integration and best practice across a diverse estate that includes corporate facilities, critical infrastructure and operational environments. We offer an opportunity to shape future-state architecture in a highly collaborative environment spanning technology, engineering, security and operations.

last updated 30 week of 2026