Join a leading system integrator delivering high-impact OT infrastructure solutions across the energy, utilities, and industrial sectors. This role sits in a well-established engineering team focused on secure, resilient systems design and delivery within highly regulated environments. Operational Technology (OT) experience is essential. This role won’t suit someone from a purely enterprise IT background. You’ll take the lead on Windows, virtualisation, and network architecture across multiple major OT projects, contributing to both delivery and pre-sales activity. Key Responsibilities Lead design and configuration of Windows Server environments, virtualisation (VMware/Hyper-V), and network infrastructure Define secure architectures in line with IEC 62443 and client-specific standards Support project lifecycle documentation (FDS, SDS, test plans), FAT execution, and QA compliance Mentor and review work of junior engineers and provide SME input across bids and live workstreams Interface with internal cyber teams to ensure systems are secure by design Key Requirements 5+ years’ experience working in OT or industrial environments (energy, utilities, critical infrastructure, etc.) Deep technical knowledge of: Windows Server 2016–2022, domain config, GPOs VMware or Hyper-V virtualisation Switch and firewall configuration Strong understanding of cybersecurity standards (IEC 62443) Con...