Mechanical Engineer

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.

We are moving to liquid-cooled GPU halls at high density. Reporting to the VP, Engineering, the Senior Mechanical Engineer owns the mechanical systems that move heat and fluid across our Canadian sites: chilled water plant, coolant distribution, pumps, piping, heat exchangers, chillers and the controls around them, from design through construction, commissioning and operation.

You do not need to have worked in a data center. We are looking for an engineer who has owned fluid systems end to end in a demanding environment (oil and gas, petrochemical, water treatment, marine, mining or industrial process are all good backgrounds) and who can bring that to a new problem. If your career has been in pumps, pipes, chillers and compressors rather than fans and ducts, this is the role for you.

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.

Requirements

• Bachelor's degree in Mechanical Engineering from a recognized institution. P.Eng or eligibility for registration with EGBC preferred.
• 7+ years designing, building, commissioning or operating fluid-moving mechanical systems: pumps, piping, chillers, compressors, heat exchangers, hydronic and process cooling plants.
• Data center or mission critical experience preferred. Liquid cooling exposure (direct-to-chip, coolant distribution units, rear-door heat exchangers) is a strong asset.
• Hands-on experience sizing pumps, piping, heat exchangers and chilled water plant, including hydraulic and thermal calculations.
• Working knowledge of P&IDs and plant design tools (AutoCAD, Revit or equivalent).
• Ability to apply CFD and thermal analysis results to design decisions.
• Working knowledge of ASHRAE (including TC 9.9), ASME B31 piping codes, CSA and BC codes. ASPE, IPC and IECC an asset. Familiarity with BMS/BAS or DCIM platforms an asset.
• Senior individual contributor who mentors and coordinates across disciplines, with the potential to lead a mechanical team as the group grows.
• Excellent verbal and written communication skills across audiences from junior staff to senior leadership.
• Self-driven, detail oriented, and comfortable delivering high-quality work with limited direction, uncertainty and limited information.
• Willing to travel regularly to Prince George and other IREN sites in BC, and Alberta in future.

Responsibilities

• Serve as the owner's mechanical SME for cooling plant across design, construction, commissioning and operations of liquid-cooled HPC data centers: chilled water, coolant distribution, pumps, piping, heat exchangers and controls.
• Review and validate specifications, calculations, drawings and other technical deliverables from consultants, equipment manufacturers, engineering firms and commissioning agents.
• Lead or support construction, installation and commissioning activities for mechanical systems.
• Monitor mechanical system performance to maintain operating limits and reliability, assess current and future capacity constraints, and implement energy-efficient improvements.
• Collaborate with architects, electrical engineers and other stakeholders to ensure integrated design solutions.
• Support project planning by contributing to schedules, budgets and resourcing plans, and coordinating with site teams, corporate staff and external engineering partners.
• Develop technical documentation (plans, checklists, specifications, reports, procedures and standards) to support work from design through construction, commissioning and operations.
• Maintain records for cooling-system technical documentation and site integration, ensuring completeness, accuracy and availability.
• Coach and provide feedback to other staff on cooling, mechanical and piping matters.
• Perform technical analyses (calculations, simulations, CFD and thermal analysis) to optimize liquid and air cooling and airflow.

Benefits

• The expected base salary for this role ranges starting from $130,000.00 
• Actual compensation will be determined based on factors such as experience, qualifications, and market data for the region.
• Total Compensation package may be inclusive of annual incentive bonus and equity (long-term incentive).
• Relocation assistance (as applicable and based on successful candidate circumstances).

• Medical, dental, and vision insurance coverage, 100% company paid for employees and dependents
• Company-paid life and disability insurance
• Voluntary life and critical illness coverage available
• Employee Assistance Program and virtual health care platform

• RRSP with company match
• Voluntary TFSA

• 3 weeks annually for vacation and paid holidays
• Hybrid work arrangement

• Opportunities for advancement and internal mobility
• Training and personal development opportunities

• Company events and team-building activities