Help Deliver Some of Australia's most critical infrastructure

We are seeking a Commissioning Engineer to join our team and support the delivery of major data centre projects across Sydney.

Working alongside experienced Lead Commissioning Engineers, you'll play a hands-on role testing, validating and commissioning critical BMS, cooling and power systems before they go live.

This role will suit an engineer who enjoys problem-solving, working through structured test procedures and delivering high-quality outcomes through attention to detail.

What you will do:

- Deliver BMS commissioning activities across L1-L5 commissioning phases
- Execute L4 Functional Testing and L5 Integrated Systems Testing (IST)
- Complete point-to-point testing of CRAHs, CDUs, FWUs, AHUs and chilled water systems
- Verify field instrumentation and BMS interfaces to UPS, generators, switchboards, PDUs, chillers and power metering systems
- Validate control sequences, alarms, trends, graphics and failover functionality
- Troubleshoot commissioning issues and support defect resolution
- Complete commissioning records, test sheets, defect close-out and handover documentation
- Work closely with project teams, subcontractors and clients to ensure successful project delivery

About You

We're looking for someone who combines technical capability with a methodical, detail-focused approach to commissioning and testing.

- Degree in Electrical, Mechatronics or Automation Engineering




- Experience with BMS, controls, automation or commissioning activities
- Solid troubleshooting and fault-finding capability
- Ability to follow test procedures and commissioning plans accurately
- Strong attention to detail and documentation skills
- Experience interpreting electrical drawings and technical documentation
- Exposure to PLC, Ignition SCADA, BMS or EMS platforms
- Strong communication skills and ability to work with multiple stakeholders
- Willingness to work across Sydney project sites

Highly Regarded

- Data centre or critical infrastructure experience
- Schneider, Siemens, Honeywell or similar BMS platforms
- Experience with HVAC, chilled water or critical cooling systems
- Exposure to L4/L5 commissioning and Integrated Systems Testing (IST)

Why Join Crossmuller?

- Work on some of Australia's largest and most advanced data centre projects
- Build sought-after experience in critical infrastructure commissioning
- Diverse and technically challenging project work
- Career growth opportunities across Crossmuller and Borg Group
- Long-term job security with a growing Australian business
- Supportive team culture and ongoing professional development

Apply Now

If you're a practical, detail-oriented engineer who enjoys troubleshooting systems, following structured testing processes and delivering quality outcomes, we'd love to hear from you.

📌 BMS Commissioning Engineer - Data Centres (Sydney)
🏢 Crossmuller
📍 Sydney