Mechanical Commissioning Engineer.

Clear.; United States; Remote; USD 80,000 - 120,000; Full time

Job summary

Clear. in the United States is seeking an experienced Mechanical Commissioning Engineer to support the commissioning and QA of large-scale data centre infrastructure.

You will establish commissioning programmes, oversee mechanical testing, and ensure critical systems deliver reliability, capacity and resilience for AI infrastructure projects. You will lead testing across chilled water plants, CDUs, and liquid cooling loops, collaborate with controls and electrical teams, and drive scalable QA/QC

Qualifications

• Experience commissioning mechanical plant and systems in mission-critical facilities such as data centres.
• Experience bringing mechanical systems through integrated systems testing.
• Ability to develop commissioning test procedures from sequences of operation and identify deficiencies.
• Strong understanding of P&IDs, mechanical systems, and controls drawings.
• Experience with liquid cooling and direct-to-chip cooling technologies.
• CxA accreditation.
• Experience working on modular data centre projects.
• Experience overseeing TAB activities.

Responsibilities

• Lead commissioning of mechanical systems in large-scale data centre facilities, including chilled water plants, CDUs, liquid cooling loops and airside systems.
• Manage commissioning activities from Level 2 through to Level 5.
• Develop, write and execute detailed test scripts and procedures to verify system capacity, redundancy and failure response.
• Lead functional performance testing and integrated systems testing, working closely with controls and electrical engineering teams.
• Review commissioning results, identify issues and implement solutions to ensure systems operate as designed.
• Interpret and work confidently with P&IDs, controls drawings and sequences of operation.
• Troubleshoot complex mechanical systems in live environments, working alongside vendors, contractors and project stakeholders.
• Provide feedback and recommendations to improve standard designs and commissioning processes across future projects.
• Support the development and implementation of scalable commissioning and QA/QC programmes for large-scale data centre developments.

Skills

Mechanical commissioning

Data centre experience

P&ID interpretation

Troubleshooting complex systems

Liquid cooling knowledge

Direct-to-chip cooling

Modular data centers

TAB oversight

Job description

Location: U.S. Remote, with opportunities to travel to New York, San Francisco and Seattle.

We are seeking an experienced Mechanical Commissioning Engineer to support the commissioning and quality assurance of large-scale, next-generation data centre infrastructure.

This is an exciting opportunity to join a rapidly growing organisation operating at the forefront of AI infrastructure, helping deliver complex, high-capacity data centre projects. You will play a key role in establishing commissioning programmes, overseeing mechanical systems testing and ensuring critical infrastructure performs to the highest standards of reliability, capacity and resilience.

Key Responsibilities:

• Lead the commissioning of mechanical systems across large-scale data centre facilities, including chilled water plants, cooling distribution units (CDUs), liquid cooling loops and airside systems.
• Manage commissioning activities from Level 2 through to Level 5.
• Develop, write and execute detailed test scripts and procedures to verify system capacity, redundancy and failure response.
• Lead functional performance testing and integrated systems testing, working closely with controls and electrical engineering teams.
• Review commissioning results, identify issues and implement solutions to ensure systems operate as designed.
• Interpret and work confidently with P&IDs, controls drawings and sequences of operation.
• Troubleshoot complex mechanical systems in live environments, working alongside vendors, contractors and project stakeholders.
• Provide feedback and recommendations to improve standard designs and commissioning processes across future projects.
• Support the development and implementation of scalable commissioning and QA/QC programmes for large-scale data centre developments.

Experience and Skills Required:

• Proven experience commissioning mechanical plant and systems within mission-critical facilities, ideally data centres.
• Experience taking mechanical systems through to integrated systems testing.
• Ability to develop commissioning test procedures based on sequences of operation and identify design or operational deficiencies.
• Strong understanding of P&IDs, mechanical systems and controls drawings.
• Strong technical problem-solving skills and the ability to work effectively with vendors and multidisciplinary engineering teams.
• Experience with liquid cooling and direct-to-chip cooling technologies.
• Commissioning Authority (CxA) accreditation.
• Experience working on modular data centre projects.
• Experience overseeing testing and balancing (TAB) activities.

We are committed to providing equal employment opportunities and ensuring all applicants are considered fairly, regardless of background or any other characteristic protected by applicable employment legislation.