What if you could lead the mechanical systems behind a Mission Critical Data Centre and shape how reliability, efficiency and operational excellence are delivered every day?

Summary/Objective

The Critical Engineering Manager - Mechanical leads the safe, reliable and efficient operation, maintenance and optimisation of all mechanical systems across the data centre campus. This includes chilled water plants, cooling towers, pumps and VFDs, CRAH/CRAC and row/door cooling, CDU and liquid-cooling distribution, environmental controls, leak detection and fire life safety interfaces. The role provides technical leadership, operational governance and vendor management to ensure all activities are executed to STACK standards and relevant legislation.

This role directly supports STACK’s commitment to 100% uptime and a concierge-level customer service experience, ensuring risk is proactively managed, planned works are executed safely, and customer communications are clear, timely and professional.

Key Responsibilities

You’ll provide technical leadership across STACK’s critical mechanical infrastructure, ensuring systems remain safe, reliable, maintainable and optimised in a live 24/7 environment.

You’ll:

- Lead safe, reliable operation and maintenance of critical mechanical systems.

- Oversee chilled water plants, cooling towers, pumps, VFDs, CRAH/CRAC, row and door cooling, CDU and liquid-cooling systems.

- Set and maintain mechanical maintenance standards, schedules and quality expectations.

- Review and approve MOPs, SOPs, EOPs, risk assessments and sequences of operation.

- Lead testing and verification activities, ensuring findings are addressed through corrective action.

- Use BMS, DCIM and analytics to monitor plant performance, identify anomalies and optimise efficiency.





- Provide technical leadership during mechanical incidents, including triage, stabilisation, root-cause analysis and corrective actions.

- Coordinate minor and medium works, upgrades and lifecycle replacements while managing change and customer impacts.

- Maintain the accuracy of P&IDs;, as-builts, valve lists, setpoints, sequences and commissioning records.

- Lead operational readiness for new mechanical assets, including documentation, spares, CMMS updates and training.

- Manage mechanical contractors and OEM/service partners against safety, quality and performance expectations.

- Lead, mentor and develop Facilities Engineering personnel and strengthen capability across the team.

- Drive continuous improvement across mechanical reliability, resilience, maintainability and efficiency.

What You’ll Bring

You’re an experienced critical engineering leader with strong mechanical expertise, sound operational judgement and the ability to lead technical teams and vendors in a live Mission Critical environment.

You’ll bring:

- 6-8 years’ experience in Data Centres or critical environments.

- Experience supervising technical teams of five or more.

- Strong experience managing preventative maintenance programs.

- Expert knowledge of critical mechanical systems including chillers, CDUs, cooling towers, DX units, CRAH/CRAC equipment, pumps, VFDs, mechanical controls and leak detection.





- Strong understanding of BMS functionality, monitoring, trending and performance optimisation.

- Experience with CMMS, BMS, DCIM and engineering systems.

- Strong troubleshooting, project management and organisational skills.

- Experience coordinating and supervising mechanical contractors working on high-risk equipment.

- Strong written and verbal communication skills, including the ability to explain technical risk and remediation clearly to customers and leadership.

- A Bachelor’s degree in Mechanical Engineering or equivalent professional experience.

- A recognised mechanical trade or refrigeration/air-conditioning qualification where applicable is preferred.

- Experience with water treatment, legionella risk management, and energy or water efficiency initiatives is advantageous.

- Willingness to work outside standard hours, including nights, weekends, public holidays and an on-call roster.

- Ability to operate effectively in a high-pressure environment with changing priorities.

- Ability to attain and hold NV1 security clearance.

Equal Prospect Employer

STACK provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, colour, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by applicable federal, state or local laws.

This policy applies to all terms and conditions of employment, including recruitment, hiring, placement, promotion, termination, redundancy, recall, transfer, leaves of absence, compensation and training.

📌 Data Center Critical Engineering Manager - Mechanical (Truganina)
🏢 STACK Infrastructure Australia
📍 Truganina