Critical Facility Manager (Japan)

Company Overview

STACK Infrastructure builds, owns, and operates hyperscale and colocation data centers that power the world’s most ambitious technology companies. With a rapidly expanding footprint across APAC, STACK combines deep development expertise, flexible capital, and operational discipline to deliver critical digital infrastructure at scale.

Our clients include the largest hyperscale cloud platforms. We are building a regional platform defined by speed of delivery, power reliability, and long-term partnership — and we are assembling the team to lead that effort.

Summary/Objective

The Critical Facility Manager is accountable for the safe, compliant and reliable operation of the site’s mission‑critical infrastructure. This role provides operational leadership, technical governance and disciplined execution to support STACK’s 100% uptime commitment and our expectation of concierge‑level customer service .

The position leads day‑to‑day critical facilities operations through the Electrical and Mechanical Critical Operations Supervisors, ensuring consistent shift execution, strong operational control and effective escalation management for significant events or multi‑discipline issues. The Critical Facility Manager ensures operational readiness, procedure quality, risk management, vendor performance and return‑to‑service governance, and participates in a rotating on‑call roster to provide after‑hours escalation and incident support.

Essential Functions – Critical Operations

· Uphold STACK’s 100% uptime objective through disciplined operational leadership, oversight and governance of mission‑critical infrastructure.

· Provide day‑to‑day operational leadership of the FM team through Electrical and Mechanical Supervisors, ensuring consistent standards across all shifts and 24/7 coverage.

· Maintain real‑time situational awareness of plant condition, redundancy state and key risk indicators using BMS/EPMS visibility, shift communications and field verification.

· Act as the primary escalation point for significant events and multi‑discipline technical issues, ensuring timely stabilisation and clear stakeholder updates.

· Ensure safe and compliant operation of all critical mechanical and electrical systems, including distribution, UPS, generators, cooling infrastructure and fire/life safety systems.

· Lead and govern incident response and recovery activities, including acting as incident manager when required, and ensuring structured post‑incident reviews.

· Govern operational documentation and execution standards, including SOPs, MOPs, EOPs, handover quality, alarm handling and operating boundaries.

· Oversee work control and safe systems of work including permit‑to‑work, isolations/LOTO, risk assessments, method statements and return‑to‑service validation.

· Coordinate and oversee planned maintenance and critical activities that impact availability or redundancy, ensuring safe planning, communication and return‑to‑service confirmation.

· Direct and monitor vendor activities affecting critical systems to ensure safe execution, compliance and correct post‑work configuration.

· Ensure CMMS and operational data remain accurate, complete and compliant for audits and operational decision‑making.

· Identify systemic risks, recurring issues, capacity constraints or documentation gaps and drive mitigations.

· Support minor works and operationally‑led improvements, ensuring changes are controlled, tested and documented prior to operational acceptance.

· Ensure training, competency and authorisation requirements for the FM team are defined, achieved and maintained.

· Produce a monthly FM report focused on FM team performance, incidents, risks, training/authorisations, vendor performance (operational) and continuous improvement.

People

· Model outstanding safety behaviour, operational discipline and professional conduct.

· Lead, coach and develop the Electrical and Mechanical Supervisors to ensure consistent leadership and technical governance.

· Drive consistent communication standards, including structured handovers, escalation pathways and technical clarity across shifts.

· Ensure effective onboarding and familiarisation for new team members, including site safety, escalation protocols and customer expectations.

· Hold FM team members accountable to performance standards and address underperformance appropriately and promptly.

· Collaborate with Security, Projects and other stakeholders to support safe and coordinated operations across the site.

· Represent Critical Operations during tours, audits, customer visits and technical discussions with a professional and service‑focused presence.

Competencies

· Advanced operational judgement in mission‑critical environments.

· Strong technical understanding of critical electrical and mechanical systems.

· Proven incident response and stabilisation capability under pressure.

· Strong governance of work control, PTW/LOTO, risk assessments and return‑to‑service validation.

· High‑quality written and verbal communication.

· Ability to lead supervisors and drive consistent execution across multiple shifts.

· Strong vendor coordination skills for critical maintenance and high‑risk activities.

· Proficiency with BMS/EPMS, CMMS and operational data systems.

· Risk‑based decision‑making aligned to safety, compliance and availability.

· Continuous improvement mindset focused on reliability and operational excellence.

· Calm, authoritative presence during escalations and operational events.

· Strong procedural discipline and ability to uplift operational standards.

Preferred Education and Experience

· Electrical, Mechanical/HVAC/Refrigeration trade qualification or license, or relevant engineering qualification recognised in Japan.

· Experience leading operations in data centres or other mission‑critical environments.

· Strong understanding of critical electrical and mechanical systems including distribution, backup power, cooling and fire/life safety.

· Experience in incident management, escalation handling and emergency response.

· Experience reviewing SOPs, MOPs, EOPs, risk assessments and commissioning/return‑to‑service documentation.

· Knowledge of PTW, isolations/LOTO and operational risk frameworks.

· Experience leading supervisors and teams across shift‑based operations.

· Basic to Intermediate level of English proficiency in written and verbal communications.

Work Environment/Conditions

This is a Monday–Friday position with rotating on‑call requirements to support after-hours incidents and escalations.

Work occurs across data halls, plant rooms, electrical/mechanical spaces and external plant areas; PPE required under site policy.

Participation in emergency response, readiness exercises and incident management activities is required.

Travel Required

· Minimal travel expected; occasional travel between local STACK facilities may be required based on operational needs.

Additional Eligibility Requirements

· Completion of STACK onboarding and required safety/compliance training.

· Ability to meet site authorisation requirements for system operation and system access.

· Physical capability to perform inspections, rounds and emergency response tasks.

· Ongoing compliance with STACK policies, procedures and behavioural standards.

Work Authorization/Security Clearance Requirements

· Legal entitlement to work in Japan.

· Ability to satisfy pre-employment screening requirements (as applicable), including right-to-work checks, background checks and reference checks.

· Ability to meet data centre security requirements including badging, access control and adherence to customer-mandated security protocols.

· Security clearance is not required unless specified for a customer-specific facility.

Equal Opportunity Employer

STACK provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of