Construction Senior Millwright

Job Type: Full-Time |
Location: Sweetwater, TX |
Department: Construction |
Reporting to: Associate Director, Construction |
Work Location Type: #onsite

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 Senior Millwright is responsible for planning, coordinating, and supervising all millwright-related activities associated with the installation, alignment, commissioning, and startup of chiller plant systems supporting a direct-to-chip liquid-cooled data center. This role ensures mechanical systems are installed safely, on schedule, within budget, and in accordance with design specifications, quality standards, and commissioning requirements. The position requires deep expertise in rotating equipment, large-scale hydronic systems, and mission-critical environments.

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.

• Millwright journeyman certification or equivalent trade training preferred.
• High school diploma or equivalent required; associate’s or bachelor’s degree in mechanical engineering, construction management, or related field preferred.
• Minimum of 8 years of experience in millwright or mechanical installation, with at least 3 years in a supervisory role.
• Demonstrated experience leading field crews and managing subcontractors on complex construction projects.
• Proven experience with large-scale chiller plants and hydronic systems.
• Strong background in rotating equipment installation and precision alignment (laser alignment preferred).
• Experience on mission-critical projects (e.g., data centers, hospitals, industrial facilities).
• Ability to read and interpret mechanical drawings, P&IDs, and equipment installation manuals.
• OSHA 30 certification required.
• Experience with data center construction, particularly liquid cooling or direct-to-chip systems preferred.
• Familiarity with CDU systems and high-density thermal management preferred.
• Knowledge of commissioning processes (Cx) and TAB (Testing, Adjusting, Balancing) preferred.
• Experience with BIM coordination and clash detection tools preferred.

• Millwright journeyman certification or equivalent trade training preferred.
• High school diploma or equivalent required; associate’s or bachelor’s degree in mechanical engineering, construction management, or related field preferred.
• Minimum of 8 years of experience in millwright or mechanical installation, with at least 3 years in a supervisory role.
• Demonstrated experience leading field crews and managing subcontractors on complex construction projects.
• Proven experience with large-scale chiller plants and hydronic systems.
• Strong background in rotating equipment installation and precision alignment (laser alignment preferred).
• Experience on mission-critical projects (e.g., data centers, hospitals, industrial facilities).
• Ability to read and interpret mechanical drawings, P&IDs, and equipment installation manuals.
• OSHA 30 certification required.
• Experience with data center construction, particularly liquid cooling or direct-to-chip systems preferred.
• Familiarity with CDU systems and high-density thermal management preferred.
• Knowledge of commissioning processes (Cx) and TAB (Testing, Adjusting, Balancing) preferred.
• Experience with BIM coordination and clash detection tools preferred.

• Pre-employment screening, including background check and substance testing may be required according to company policies.
• Must provide own steel-toed work boots; other PPE will be supplied.
• Must be able to reliably commute to the work site daily or have plans to relocate before starting work.
• Must be comfortable working a rotational schedule,…