X4 Technology
OT Engineer
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Outside IR35 Contract Opportunity | OT Engineer | £400/day | Remote (UK)
Are you an experienced Operational Technology (OT) Engineer looking for your next contract? We're supporting a growing UK organisation embarking on a range of OT infrastructure and industrial connectivity projects and are looking for an experienced contractor to join the team.
Role Overview
- Role: OT Engineer
- Location: Remote with occasional travel across the UK
- Contract: 6 months initially, with strong potential for extension
- Rate: Up to £400/day Outside IR35
- Start: ASAP
OT Engineer Responsibilities
- Design, implement and support Operational Technology environments.
- Configure and maintain industrial networks, switches and firewalls.
- Support OT infrastructure across manufacturing, utilities or industrial environments.
- Work closely with IT and engineering teams to ensure secure integration between OT and enterprise networks.
- Perform troubleshooting, incident resolution and root cause analysis.
- Contribute to OT security initiatives and best practice.
- Produce technical documentation and support knowledge transfer.
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OT Engineer Essential Skills
- Proven OT/ICS architecture experience within industrial, manufacturing, utilities, or critical infrastructure.
- Expertise in OT network architecture, cyber security, and operational resilience.
- Solid understanding of IT/OT convergence and secure architecture design.
- Hands-on experience applying IEC 62443, including zone and conduit modelling.
- Knowledge of industrial protocols including Modbus, DNP3, OPC UA, and Profinet.
- Experience designing secure OT network segmentation and reference architectures.
- Strong OT cyber risk assessment and mitigation expertise.
- Experience working with OEMs, systems integrators, and engineering partners.
- Knowledge of TOGAF, SABSA, or other enterprise architecture frameworks is desirable.
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Desirable
- Experience within manufacturing, energy, utilities or critical infrastructure.
- Exposure to Cisco Industrial, Hirschmann, Moxa, Siemens or equivalent technologies.
- Understanding of IEC 62443 or other industrial cybersecurity frameworks.
- Relevant networking or security certifications.
What's on Offer?
- Up to £400/day Outside IR35
- Fully remote with occasional UK travel
- Initial 6-month engagement
- Excellent chance of long-term extensions
- Opportunity to work on business-critical OT transformation projects
If you're an experienced OT Engineer available for your next contract, I'd be keen to hear from you.
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