OT Infrastructure Engineer​/Consultant

Sword is a leading provider of business technology solutions within the Energy, Public and Finance Sectors, driving transformational change within our clients. We use proven technology, specialist teams and domain expertise to build solid technical foundations across platforms, data, and business applications. We have a passion for using technology to solve business problems, working in partnership with our clients to help in achieving their goals.

As the Senior OT Infrastructure & Cyber Security Engineer, you will play a key role in the design, build, configuration and deployment of secure infrastructure supporting complex OT and industrial environments.

This is a hands‑on engineering role combining infrastructure, systems and cyber security expertise. You will work across Windows and Linux environments, physical and virtual infrastructure and industrial technology, supporting systems from initial design and build through integration, testing, commissioning and deployment.

Working closely with clients, vendors, design authorities and wider OT, network and cyber security teams, you will help resolve technical challenges, support system and vendor integration and ensure solutions are secure, resilient and delivered in line with agreed designs and standards.

Our work spans a range of client environments and locations, with opportunities to support both UK and international project deployments. Some current projects include periods working on client site in Dubai, so international travel opportunities are available for those with the flexibility to undertake them.

• Design, build and configure physical and virtual server infrastructure within OT environments
• Design, build and support VMware environments
• Build, configure and support Windows Server and Linux-based infrastructure platforms
• Support the hosting, installation and integration of OT and industrial applications
• Configure and support Active Directory, Group Policy, DNS, DHCP and associated infrastructure services
• Implement resilient and highly available infrastructure supporting critical OT systems
• Support enterprise storage, backup, recovery and disaster recovery solutions
• Implement server and device hardening, patching and vulnerability remediation
• Undertake infrastructure health checks, troubleshooting and performance analysis
  
  Support infrastructure migrations, upgrades and technology refresh programmes
• Undertake system and infrastructure testing and validation prior to deployment
• Support FAT, SAT, commissioning and production go-live activities
• Troubleshoot system, application and vendor integration issues during project delivery
• Produce high-quality HLDs, LLDs, build guides, configuration documentation, test plans, validation evidence and as-built documentation
• Work closely with OT, cyber security, network, application and engineering teams
• Provide technical consultancy and guidance to clients throughout project delivery

You'll bring strong hands‑on infrastructure engineering experience, with the technical capability to deliver secure and resilient solutions within complex OT and industrial environments.

• Strong experience building, configuring and supporting Windows Server environments
• Strong hands‑on experience with VMware and physical and virtual server deployment
• Experience with Linux operating systems, ideally including Red Hat Enterprise Linux (RHEL)
• Experience supporting application hosting and associated infrastructure
• Strong understanding of Active Directory, Group Policy, DNS and DHCP
• Experience with high availability, clustering and infrastructure resilience
• Experience with enterprise server hardware, including Dell, HPE or equivalent
• Knowledge of SAN,…