Critical Environment Energy Marshal Authorised Engineer Job at Microsoft Corporation (London)

Job Description

We are seeking a Critical Environment Energy Marshal – Authorised Engineer (AE) to provide electrical safety leadership and governance for Microsoft data centre operations across the United Kingdom. The Energy Marshal holds Authorised Engineer (AE) responsibility, ensuring safe, compliant, and resilient power system operations across Microsoft UK data centre sites within mission-critical environments. The role provides electrical safety leadership and ensures consistent governance of electrical safety standards across operational campuses. As part of the CO+I organisation, the Energy Marshal plays a key role in delivering the core infrastructure and foundational technologies that support Microsoft’s online services including Bing, Office 365, Xbox, OneDrive, and the Microsoft Azure platform.

Job Responsibility

Provide Authorised Engineer (AE) governance during the transition from externally operated AE arrangements to in-house Microsoft AE ownership, ensuring continuity of electrical safety and compliance
Provide electrical safety leadership across UK data centre operations, promoting a strong safety culture and consistent application of electrical safety governance
Own and govern Microsoft’s Energy Isolation Program, establishing acceptance criteria and ensuring consistent application across campus activities
Ensure the Energy Isolation Program meets or exceeds Microsoft safety policies, applicable legislation, and recognised electrical safety standards
Own, implement, and govern the UK Electrical Safety Rules, ensuring alignment with the Electricity at Work Regulations (EAWR), BS EN 50110-1, and Microsoft global safety standards
Establish and maintain a centralised Lockout / Tagout (LOTO) framework, defining requirements for both individual and group energy isolation activities
Approve and govern energy isolation procedures, ensuring defined stakeholder communication pathways are followed during the planning and execution of electrical works
Act as the Authorised Engineer (AE) and final electrical safety authority for electrical safety decisions, including abnormal events, incidents, and return-to-service approvals
Partner with construction, engineering, and operations teams where electrical safety activities impact live data centre operations
Act as a subject matter expert supporting energy isolation investigations and incident reviews
Participate in High-Risk Activity (HRA) planning related to switching, commissioning, and critical electrical works
Review and approve high-risk SOWs, SOPs, and MOPs, ensuring hazardous energy sources are correctly identified and controlled
Define and govern the Authorised Person (AP) framework, including competency assessment, role definitions, and authorisation processes
Ensure robust processes exist to verify competence, training, authorisation levels, and appropriate PPE for personnel performing electrical work
Produce monthly reporting on program performance, trends, lessons learned, and compliance status of the electrical safety and energy isolation programs

Requirements

Bachelor’s Degree in Electrical Engineering, Computer Engineering, or a related field OR equivalent practical experience in electrical engineering within mission-critical environments
Demonstrated experience operating as an Authorised Engineer (AE) or equivalent senior electrical authority within regulated or high-risk environments
Strong working knowledge of electrical safety legislation and standards including: Electricity at Work Regulations (EAWR), BS EN 50110-1 or equivalent electrical safety frameworks
Proven experience managing energy isolation and control of hazardous energy programs
Ability to meet Microsoft, customer and/or government security screening requirements are required for this role
This position will be required to pass the Microsoft Cloud background check upon hire/transfer and every two years thereafter

Nice to have

Experience working within: Data centres
Utilities
Power generation
Transmission and distribution
Other high-availability critical infrastructure environments
Ability to communicate complex technical and safety requirements to both engineers and non-engineers
Ability to interpret electrical one-line diagrams, schematics, and redundancy architectures to ensure safe isolation strategies
Experience in control of hazardous energy programs within mission-critical environments
Experience operating and maintaining building MEP systems including: Power distribution systems
Redundant UPS systems
DC battery systems
Standby diesel generation
Grounding and life-safety systems
Strong understanding of electrical theory and its practical application in critical environments
Knowledge of construction documentation including one-line diagrams, schematics, and construction drawings
Experience working with Building Management Systems (BMS), automation, and control frameworks
Experience governing or supporting electrical authorisation frameworks such as AE / SAP / AP / CP

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Critical Environment Energy Marshal Authorised Engineer

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