Senior Mechanical Commissioning Engineer (REMOTE)

JLL•Denver, CO

5h•Remote

About The Position

JLL empowers you to shape a brighter way. Our people at JLL are shaping the future of real estate for a better world by combining world class services, advisory and technology for our clients. We are committed to hiring the best, most talented people and empowering them to thrive, grow meaningful careers and to find a place where they belong. Whether you’ve got deep experience in commercial real estate, skilled trades or technology, or you’re looking to apply your relevant experience to a new industry, join our team as we help shape a brighter way forward. This position can be remote (work from home) but must live near a major airport with up to 50% overnight travel. The SKAE JLL Data Center Commissioning Group seeks an experienced Mechanical and Controls Commissioning Engineer to lead comprehensive commissioning for small, medium, and hyperscale data center projects ranging from 1MW to 100MW+. In this critical role, you'll drive technical excellence as both a hands-on mechanical commissioning engineer and strategic project leader, ensuring seamless integration of complex mechanical and controls systems in mission-critical environments where downtime is not an option. Your home location is flexible with remote work available for the right candidate.

Requirements

Minimum 7 years of documented experience leading hands-on data center commissioning activities with at least 5 years specifically in data center cooling systems and building monitoring and automation commissioning
Proven track record leading mechanical and controls commissioning of facilities with power densities exceeding 25kW per rack
Deep understanding of cooling plant sequences of operations, redundancy concepts, and their implementation in mission critical designs
Experience working in partnership with major cooling equipment manufacturers (JCI, Daikin, Trane, Vertiv, Schneider, etc.)
Proficiency in commissioning management software platforms (CxAlloy, ACC, Procore, Bluebeam, and similar)
Advanced knowledge of commissioning processes for data center cooling infrastructure and building monitoring and controls platforms
Expertise in precision HVAC systems, glycol cooling, and thermal management strategies including liquid cooling applications
Strong understanding of BAS/DCIM integration, monitoring protocols, and alarm management protocols
Ability to travel 50% annually throughout North America and work in active construction environments, climb ladders, and work in mechanical/electrical rooms with availability for occasional emergency commissioning support and weekend/evening critical testing activities
Candidates must be authorized to work in the United States without sponsorship.

Nice To Haves

Bachelor's degree in related technical field
Professional Engineer (PE) license and PMP certifications
Industry recognized commissioning certification (currently or pursuing)
Experience working on hyperscale data center projects (AWS, Microsoft, Google, Meta, etc.)

Responsibilities

Developing detailed commissioning proposals and scope documents based on client RFPs, design drawings, and specifications while leading pre-commissioning planning sessions with stakeholders
Managing and performing holistic factory and onsite commissioning activities (Level 0 – Level 6) for mechanical and control systems infrastructure
Executing comprehensive commissioning of mission-critical systems including CRAH units, chilled water plants, central cooling plants, dry coolers, liquid cooling systems, advanced server rack containment strategies, and associated controls and monitoring systems
Developing system-specific functional performance tests and integrated systems testing protocols that meet industry standards (ASHRAE Guideline 0 or similar)
Creating commissioning plans, test procedures, and comprehensive final reports while documenting deficiencies using structured tracking systems and overseeing resolution through substantial completion
Directing cross-functional commissioning teams of 2-8+ engineers and technicians while coordinating with project stakeholders throughout the project lifecycle from design phase through transition to operations
Conducting commissioning training for Owner's operations staff and providing knowledge transfer documentation on larger projects
Managing commissioning schedules, ensuring optimal team utilization, identifying potential failure modes, and developing mitigation strategies
Interpreting project drawings and specifications, identifying design issues, and communicating technical concerns effectively to clients and project teams