Mechanical Lead

Job Type: Full-time |

Location: Sydney, Australia |

Department: Operations/Engineering |

Reporting to : Engineering Manager |

Work Location: Hybrid

IREN is a vertically integrated AI Cloud provider, delivering large-scale data centers and GPU clusters for AI training and inference. IREN’s platform is underpinned by its expansive portfolio of grid-connected land and power in renewable-rich regions across North America, Europe and APAC.

The Mechanical Lead serves as the main technical authority and discipline lead for all mechanical engineering matters across IREN’s portfolio of data centre projects. This role provides strategic oversight, governance, and leadership for mechanical system design, air and liquid cooling infrastructure, equipment integration, and operational support across capital projects and manufacturing initiatives. The Lead ensures technical excellence, standardization, regulatory compliance, risk mitigation, and reliable mechanical systems performance across all regions.

With 100% renewable energy, we build, own and operate our data centers and take pride in being at the forefront of sustainable solutions for the ever-evolving applications of high-performance compute. We believe that human progress is invaluable, but it should be done in the right way – responsibly, sustainably and having a positive impact on the communities we operate in.

• Bachelor's Degree in Mechanical Engineering (Master's preferred)
• CPEng registration with Engineers Australia, or equivalent state-based registration (e.g. RPEQ in Queensland), ordemonstratedeligibility for registration
• 10+ years of progressive experience in mechanical water conveyance and cooling systems for industrial, mission critical and hyperscale data centre environments
• Demonstrated experience acting as mechanical discipline lead or senior technical authority on complex projects
• Strongexpertisein equipment validation, protection systems, and power distribution products
• In-depth knowledge of applicable mechanical codes and standards, including the NCC/BCA, AS 1668, AS 2118, AS 1851, and AIRAH guidelines; familiarity with ASHRAE isadvantageous
• Ability to lead technical risk assessments and provide executive-level recommendations
• Strong leadership, communication, and stakeholder management skills
• Experience working with data centre clients or mission-critical facilities is highly desirable

Reporting to the Engineering Manager the Mechanical Lead is responsible for:

• Act as the mechanical engineering discipline lead and technical authority for mechanical systems and cooling equipment, and their integration across all projects
• Manage directly or functionally a team of senior,intermediateand junior mechanical engineers
• Ensure Mechanical discipline is coordinated appropriately with other disciplines like Civil, Architectural, Structural, Electrical and Piping.
• Establish andmaintainmechanical engineering standards, design criteria, and technical specifications to ensure consistency, safety, and reliability across products and installations.
• Provide final technical review and approval of mechanical designs, calculations, and deliverables prepared internally or by external consultants and vendors.
• Oversee the design and validation of mechanical systems for custom-manufactured equipment including central cooling plants, fire protection, site water distribution, re-fueling facilities, etc
• Lead technical reviews, constructability assessments, and risk evaluations for mechanical systems prior to release for production or installation.
• Serve as the primary mechanical interface between engineering, manufacturing, QA/QC, project management, and external stakeholders.
• Provide technical leadership during customer interactions, supporting complex discussions related to mechanical systems design, performance, and compliance.
• Ensure technical documentation, drawings, specifications, and test reports meet internal standards and regulatory requirements.
• Identify technical risks related to mechanical systems and provide mitigation strategies to senior leadership.
• Mentor and provide technical guidance to junior engineers and cross-functional team members.
• Monitor industry trends, evolving codes, and regulatory changes in the data centre and mechanical manufacturing sectors, ensuring proactive integration into company standards.

At IREN, we offer a comprehensive, market-competitive total rewards package designed to support employees’ well-being, career advancement, and financial wealth. Our offerings reflect our commitment to Proceed with Purpose while rewarding high performance and long-term growth.

• Compensation & Rewards Competitive salary range based on experience and impact Short- and long-term incentive programs designed to reward both results and long term company success

Wellbeing & Benefits

• Comprehensive extended health and dental coverage to keep you and your family supported
• Three weeks of paid vacation to recharge, travel, or simply enjoy more life outside of work (note that paid vacation is for salaried employees only)

Work Environment A modern hybrid model — collaborate in our Sydney office Tuesday–Thursday, with flexibility the rest of the week

Casual, comfortable attire so you can bring your best self to work without the suit-and-tie Access to an onsite, fully equipped gym to make wellness part of your workday

We value diverse perspectives and believe that skills can be developed. If you’re passionate about this role, we want to hear from you — whether you meet every criteria or not. Your unique experiences might be exactly what we need!

IREN is an equal opportunity employer that is committed to creating an inclusive workplace. We are committed to evaluating qualified applicants and do not discriminate against protected characteristics under applicable legislation. This job will remain posted until filled. While we appreciate all applications we receive, we are only able to contact candidates under consideration.

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