Mechanical Engineer Lead

Reporting to the Vice President of Engineering, the Mechanical Engineer Lead – Data Center serves as the main technical authority and discipline lead for all mechanical engineering matters across IREN's portfolio of data center 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.We have grown substantially since 2019, from our inception in Australia to now having several facilities across North America and being listed on NASDAQ... and we are just getting started! By joining us, you will be contributing to the future of sustainable high-performance compute and the local communities we strive to have a positive impact on. Job Requirements:Bachelor's Degree in Mechanical Engineering (Master'spreferred).P.Eng. registration in Texas (registration in Oklahoma would be an asset).10+ years of progressive experience in mechanical water conveyance and cooling systems for industrial, mission critical and hyperscale data center environmentsDemonstrated experience acting as mechanical discipline lead or senior technical authority on complex projects.Strong expertise in equipment validation, protection systems, and power distribution products.In-depth knowledge of applicable mechanical codes and standards, including ASHRAE, IMC, IBC, NFPAAbility to lead technical risk assessments and provide executive-level recommendations.Strong leadership, communication, and stakeholder management skills.Experience working with data center clients or mission-critical facilities is highly desirable.Job Responsibilities:Act as the mechanical engineering discipline lead and technical authority for mechanical systems and cooling equipment, and their integration across all projectsManage directly or functionally a team of senior, intermediate and junior mechanical engineersEnsure Mechanical discipline is coordinated appropriately with other disciplines like Civil, Architectural, Structural, Electrical and Piping.Establish and maintain mechanical 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, etcLead 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 center and mechanical manufacturing sectors, ensuring proactive integration into company standards.