{"id":3700401,"url":"https://alion.io/job/nscale-ot-network-sme-emea","title":"OT Network SME, EMEA","company":{"id":48155,"name":"Nscale","domain":"nscale.com","url":"https://alion.io/company/nscale","size_band":"501-1000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":{"grade":"A","score":90,"open_postings":26,"ghost_share":0,"stale_share":0.385,"repost_share":0.038,"time_to_fill_p50_days":56,"computed_at":"2026-11-04T06:34:25Z"}},"role":"Networking","role_family":"Networking","seniority":"senior","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Ireland","United Kingdom"],"countries":["IE","GB"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"VLAN","optional":false}],"status":"live","first_seen_at":"2026-11-03T15:23:05Z","employer_posted_date":"2026-11-03","last_verified_at":"2026-11-04T20:13:27Z","board_verified":true,"closed_at":null,"days_open":1,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":1},"description":"**Please note that while this position can be based out of either the UK or Ireland, EMEA-wide travel will be required as part of the role**\nAbout Nscale\nAt Nscale, we are building the infrastructure for the AI revolution. Nscale are developing cutting-edge sovereign generative AI solutions, powered by a new generation of high-performance, sustainable data centres and GPUs built specifically for AI workloads.\nThe growth of artificial intelligence is driving unprecedented global demand for compute and GPU infrastructure. Nscale is positioned at the heart of this transformation, building the platforms that will enable superintelligence.\nNscale are working closely with the world’s most advanced AI technology providers, integrating next-gen compute hardware and GPU clusters in both partner and Nscale built facilities. This is an opportunity to join Nscale’s journey, play a key role in delivering transformative AI infrastructure, and help shape a company designed to scale rapidly across Europe and beyond.\nPurpose\nNscale is seeking an OT Network Subject Matter Expert to support the design, deployment, validation, and operation of highly available OT networks across Nscale data centers. This role owns the industrial networking layer that connects PLC systems, field devices, and SCADA platforms, ensuring that network architectures meet Nscale requirements for resiliency, cybersecurity, determinism, and maintainability. The role works closely with Controls Engineers, SCADA SMEs, IT/network teams, system integrators, and commissioning teams to ensure OT networks are deployed as mission-critical infrastructure.\nAccountabilities\nSupport the design and review of OT network architectures including EtherNet/IP, VLAN segmentation, zone-based design, managed switches, firewall boundaries, and redundancy strategies appropriate for critical facilities.\nValidate OT network designs for resilience, determinism, maintainability, and elimination of single points of failure, including review of PRP, DLR, or equivalent redundancy topologies where applicable.\nReview vendor and integrator network designs, switch configurations, addressing plans, cabinet layouts, and documentation for compliance with Nscale OT design standards.\nCoordinate with cybersecurity teams to ensure OT network segmentation, remote access controls, firewall policies, authentication requirements, and secure operational practices are properly implemented.\nParticipate in FAT, SAT, commissioning, and failover testing for OT network infrastructure, including switch redundancy, network recovery, and communications validation between PLC and SCADA layers.\nSupport troubleshooting of OT network performance, configuration, or communications issues during deployment and live operations.\nPartner with SCADA, controls, and IT teams to ensure clean interfaces between the OT network, control system devices, and upstream monitoring platforms.\nMaintain network documentation including topology diagrams, VLAN and IP plans, firewall rules, redundancy diagrams, standards, and turnover records.\nScope and boundaries\nLoading model: this role loads 80% on projects and 20% on the operations support model in the operations support model - MOC approval, patch testing, and dispatch and ticketing.\nQualifications and experience\nRequired:\nBachelor’s degree in Engineering, Computer Science, Information Technology, or related technical discipline, 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