OT Network SME (EMEA)

Location: UK; other locations: EMEA

Company

Nscale operates data centers requiring mission-critical OT network infrastructure connecting PLC systems, field devices, and SCADA platforms.

What you will do

• Design and review OT network architectures using EtherNet/IP, VLAN segmentation, zone-based design, managed switches, firewall boundaries, and redundancy strategies.
• Validate resilience, determinism, maintainability, and single-point-of-failure elimination, including PRP, DLR, or equivalent redundancy topologies.
• Review vendor and system-integrator designs, switch configurations, addressing plans, cabinet layouts, and technical documentation.
• Coordinate OT segmentation, remote access controls, firewall policies, authentication, and secure operational practices with cybersecurity teams.
• Participate in FAT, SAT, commissioning, failover, recovery, and communications testing for PLC and SCADA network infrastructure.
• Troubleshoot live OT network issues, maintain topology and addressing documentation, and coordinate interfaces with SCADA, controls, IT, and monitoring teams.

Requirements

• Bachelor’s degree in Engineering, Computer Science, Information Technology, or a related technical discipline, or equivalent practical experience.
• 5+ years of experience supporting industrial or OT networks in manufacturing, industrial, utilities, or mission-critical environments.
• Strong understanding of EtherNet/IP, managed switches, VLANs, routing and switching fundamentals, network segmentation, and redundancy design.
• Experience supporting PLC and SCADA environments and understanding how OT network design affects system performance and availability.
• Familiarity with OT cybersecurity practices, including segmentation, access control, patch coordination, and secure remote support.
• Experience supporting field testing, commissioning, and troubleshooting of industrial network infrastructure.

Nice to have

• Experience with PRP, DLR, or similar industrial redundancy protocols.
• Experience supporting data center BMS, EPMS, or other critical-infrastructure OT networks.
• Hands-on familiarity with Cisco Industrial, Stratix, Hirschmann, or similar industrial networking platforms.
• CCNA, an industrial networking certification, or equivalent technical credentials.

Culture & Benefits

• The role is allocated 80% to projects and 20% to the operations support model.
• Operations support includes MOC approval, patch testing, dispatch, and ticketing.
• Success is measured through OT security audits, validated network designs, first-time commissioning and failover results, and complete turnover documentation.
• Assigned sites are expected to maintain passed OT audits no older than six months, with no critical findings open beyond 30 days.