* M&E Technical Support: Act as the technical escalation point for on-site Operations teams across all aspects of managing mechanical and electrical systems. * Set and maintain maintenance standards, defining the technical baseline that all sites operate to. * Provide technical input into procurement, supporting technical services contracts to ensure scope and requirements are fit for purpose. * Design Review & Engineering Assurance: Carry out M&E design reviews at concept, detailed design and pre-handover stages — challenging resilience, maintainability and single points of failure before they are built in. * Review vendor and consultant submissions, drawings, schematics and O&M documentation against Nscale engineering standards. * AI Infrastructure Support: Provide technical support to AI Infra teams, with particular focus on AI rack cooling and power distribution systems. * Change & Compliance: Own change approval — technical review and sign-off across internal and third-party sites. * Act as technical approver for colocation change requests: assess supplier-raised works on live systems for risk to Nscale infrastructure, and challenge or reject where method, timing or resilience impact is not acceptable. * Run technical audits as part of the engineering-standards audit programme across the estate. * Assist in technical site audits of colocation sites — assessing partner infrastructure, maintenance regimes and standards compliance against contracted and Nscale requirements, and tracking findings through to closure. * Incidents, Problem Solving & RCA: Provide technical support to site teams during live incidents, remote or on site, helping diagnose faults and guiding safe recovery of M&E systems. * Own Root Cause Analysis (RCA) creation and closure, and drive Corrective and Preventive Actions (CAPA) through to completion. * Lead structured problem solving on complex and recurring faults, using trend, alarm and maintenance data to resolve underlying causes rather than repeat symptoms. * Standards, Training & Planning: Maintain the engineering standards library — the single source of truth for M&E standards as the team scales. * Develop and deliver technical training and knowledge-sharing for site Operations teams, raising M&E capability, standardising how faults are handled, and closing gaps identified through audits and RCAs. * Provide technical due diligence for new sites — early input into Site Mobilisation, assessing M&E design and build before handover. * Support capacity and thermal engineering — modelling whether site power and cooling can support the next generation of racks. * Support asset lifecycle management — tracking end-of-life on critical M&E equipment so failures are planned for, not discovered. * Contribute to energy efficiency / PUE improvement — continuous improvement of site energy performance.