Tokyo, Japan, Japan
Critical InfrastructureKara KajimkhaanPermanentRef 266710

Facility Manager/ Engineer

Key Responsibilities


Critical Facility Operations


Operate and monitor data center electrical and mechanical infrastructure on a 24×7 basis.

Maintain continuous availability of critical infrastructure supporting IT equipment.

Monitor facility systems through BMS, EPMS, DCIM, and other monitoring platforms.

Perform routine facility inspections and equipment rounds.

Identify abnormal operating conditions and initiate corrective action.

Respond to alarms, incidents, equipment failures, and emergency conditions.

Participate in on-call and/or shift coverage as required.

Electrical Systems


Operate, inspect, troubleshoot, and coordinate maintenance of systems including:


Utility electrical feeds

Medium- and low-voltage switchgear

Transformers

UPS systems

Battery systems

Static transfer switches

Automatic transfer switches

Standby generators

PDUs and RPPs

Rack-level power distribution

Grounding systems

Electrical monitoring systems

Monitor electrical capacity and loading to ensure systems remain within design and redundancy limits.


Mechanical and Cooling Systems


Operate and maintain critical cooling infrastructure including:


Chillers

Cooling towers

CRAH/CRAC units

Pumps

Heat exchangers

Air handling systems

Chilled-water systems

Direct expansion systems

In-row cooling

Rear-door heat exchangers

Liquid-cooling/CDU systems, where deployed

Monitor temperature, humidity, pressure, flow rates, and cooling capacity to maintain required environmental conditions.


High-Density / GPU Infrastructure


Support deployment and operation of high-density compute infrastructure, including GPU and AI clusters.


Responsibilities may include:


Evaluating rack power requirements

Monitoring high-density rack loads

Validating A/B power distribution

Supporting 30–100+ kW rack deployments

Coordinating liquid-cooling infrastructure

Monitoring CDU and facility-water systems

Evaluating thermal loads and cooling capacity

Supporting deployment of NVIDIA DGX, HGX, or equivalent high-performance computing platforms

Preventive and Corrective Maintenance


Develop and execute preventive maintenance schedules.

Coordinate maintenance with OEMs and service providers.

Review maintenance procedures before work begins.

Ensure appropriate redundancy is maintained during maintenance activities.

Conduct post-maintenance verification.

Maintain maintenance records and equipment histories.

Identify recurring failures and recommend corrective actions.

Incident and Emergency Response


Respond to facility incidents including:


Utility power failures

UPS failures

Generator events

Cooling failures

High-temperature conditions

Water leaks

Fire alarms

Electrical faults

Equipment failures

Perform initial troubleshooting, escalation, containment, and recovery.


Participate in root-cause analysis and preparation of incident reports following significant events.


Change Management and Operational Procedures


Develop, review, and maintain:


Standard Operating Procedures (SOPs)

Method of Procedures (MOPs)

Emergency Operating Procedures (EOPs)

Preventive Maintenance procedures (PMs)

Risk assessments

Change-management documentation

Review proposed facility work for operational risk before implementation.


Ensure contractors and vendors comply with approved procedures while working within critical environments.


Capacity Management


Monitor and report facility capacity including:


Utility capacity

UPS capacity

Generator capacity

Rack power utilization

PDU utilization

Cooling capacity

Space utilization

Electrical and mechanical redundancy

Support forecasting and capacity planning for new customer and IT deployments.


Identify potential capacity constraints and recommend infrastructure upgrades.


Energy Efficiency


Monitor facility efficiency and identify opportunities to reduce energy consumption while maintaining reliability.


Relevant metrics may include:


PUE

Cooling efficiency

UPS efficiency

Rack power utilization

Electrical losses

Temperature and airflow optimization

Support sustainability and energy-management initiatives.


Vendor and Contractor Management


Coordinate OEM maintenance providers and contractors.

Review scopes of work and technical proposals.

Supervise contractors working within critical environments.

Verify completion and quality of maintenance activities.

Ensure vendors comply with facility safety and operational requirements.

Assist with evaluation of maintenance contracts and service providers.

Documentation and Reporting


Maintain accurate facility documentation including:


Single-line electrical diagrams

Mechanical diagrams

Equipment inventories

Capacity reports

Budget management

Maintenance records

Alarm histories

Incident reports

SOPs, MOPs, and EOPs

Vendor documentation

As-built drawings

Provide regular operational and capacity reports to management.


Safety and Compliance


Ensure compliance with applicable:


Electrical safety requirements

Occupational health and safety standards

Fire and life-safety requirements

Environmental regulations

Data center operating policies

Company security requirements

Participate in safety training, emergency drills, and business-continuity exercises.


Required Qualifications


Bachelor's degree, technical diploma, or equivalent experience in Electrical Engineering, Mechanical Engineering, Facilities Engineering, Building Services Engineering, or related discipline.

Approximately 3–7+ years of experience in data centers, mission-critical facilities, telecommunications facilities, semiconductor facilities, hospitals, industrial plants, or similarly critical environments.

Strong understanding of electrical and/or mechanical infrastructure.

Experience working with critical facility maintenance and operational procedures.

Ability to interpret electrical single-line diagrams and mechanical drawings.

Strong troubleshooting and analytical skills.

Ability to work safely around energized electrical and mechanical equipment.

Ability to coordinate multiple vendors and maintenance activities.

Strong written documentation and communication skills.

Preferred Qualifications


Experience with one or more of the following is preferred:


Hyperscale or colocation data centers

Tier III/Tier IV data center environments

High-density GPU/HPC environments

Liquid cooling

BMS/EPMS/DCIM platforms

UPS and generator systems

Medium-voltage electrical distribution

Chilled-water cooling systems

ISO 27001

ISO 9001

ISO 14001

ISO 50001

Uptime Institute standards

Data center commissioning

Professional electrical, mechanical, facility-management, or data-center certifications are advantageous.


Core Competencies


The successful candidate should demonstrate:


Reliability mindset — understands that facility failures can directly impact customer and business operations.

Operational discipline — follows established procedures and change-control processes.

Risk awareness — recognizes potential single points of failure and operational risks before performing work.

Technical troubleshooting — systematically identifies and resolves electrical and mechanical problems.

Attention to detail — maintains accurate records and carefully validates facility conditions.

Incident management — remains effective during critical facility events.

Ownership — takes responsibility for issues through resolution rather than simply escalating them.

Communication — communicates technical issues clearly to operations teams, management, customers, and vendors.

Working Conditions


Data center / mission-critical facility environment.

May require rotating shifts or 24×7 operational coverage.

Participation in an on-call rotation may be required.

Some maintenance activities may occur during nights, weekends, or scheduled maintenance windows.

Role requires working around electrical equipment, generators, cooling systems, and other industrial infrastructure.

May require lifting equipment, climbing ladders, and working in equipment rooms or under raised floors.

Key Performance Indicators


Performance may be measured against:


Critical infrastructure availability

Number and severity of facility incidents

Preventive maintenance completion

MOP/SOP/EOP compliance

Incident response and recovery time

Capacity-management accuracy

PUE and energy efficiency

Safety performance

Vendor performance

Documentation accuracy

Successful completion of infrastructure expansions and customer deployments

Reporting Structure


Reports to: Data Center Facility Manager / Critical Facilities Manager

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