Senior OT Engineer

Salary: £60,000 - 60,000 per year

Requirements:

• At least 3 years experience delivering OT infrastructure, with hands-on skills across Windows Server, virtualisation and networking
• Strong Windows Server experience, including Active Directory, Group Policy and secure baseline configuration
• Experience configuring managed switches, firewalls and OT network infrastructure, including VLANs, routing and segmentation
• Working knowledge of OT cyber security good practice, including hardening, access control and patch management
• Experience producing architecture, design, build and test documentation to a controlled project standard
• Experience supporting testing and FAT activities, including preparation of test evidence
• Understanding of IEC 62443 principles or equivalent OT cyber security standards

Responsibilities:

• Design and deliver OT infrastructure solutions covering Windows Server, virtualisation, storage, backup, domain services and supporting networks
• Produce system architecture, design, build and test documentation to a controlled project standard
• Configure Windows Server environments, including Active Directory, Group Policy and secure baseline settings
• Design and support OT network infrastructure, including managed switches, firewalls, VLANs and segmentation
• Apply hardening, patch management and access control measures in line with OT cyber security principles
• Carry out build, integration and testing activities, including customer FAT
• Provide technical support during site testing, commissioning and handover
• Review technical work produced by others and support the wider engineering team

Technologies:

• Active Directory
• Support
• Network
• Security
• Windows

More:

We are a well-established engineering business focused on operational technology and digital transformation. Our team works across highly regulated industrial environments, delivering critical infrastructure projects in energy, water, renewables and manufacturing. This is a home-based role with flexibility, autonomy, a competitive salary, 28 days holiday plus bank holidays, a 6.5% pension scheme, life assurance, and private healthcare.

last updated 33 week of 2026