JLL · 2 days ago
Senior Mechanical Commissioning Engineer (REMOTE)
United States
Full-time
Remote
Senior Level
$140K/yr - $165K/yr
7+ years expJLL is seeking an experienced Mechanical and Controls Commissioning Engineer to join their Data Center Commissioning Group. This role involves leading mechanical and controls systems commissioning for various data center projects, ensuring technical excellence and project delivery.
CommercialReal Estate
Responsibilities
Help develop detailed commissioning proposals and scope documents based on client RFPs, design drawings, and specifications
Lead pre-commissioning planning sessions with stakeholders to establish testing protocols, acceptance criteria, and project milestones
Manage, perform and document holistic (Level 0 – Level 6) factory and onsite commissioning activities for the mechanical and control systems infrastructure
Execute comprehensive commissioning of mission-critical systems including CRAH units, chilled water plants, central cooling plants, dry coolers, liquid cooling systems and advanced server rack containment strategies and associated controls and monitoring systems
Develop system and equipment specific functional performance tests and integrated systems testing protocols
Create detailed commissioning plans, test procedures, and comprehensive final reports meeting industry standards (ASHRAE Guideline 0 or similar)
Document deficiencies using structured tracking systems and oversee resolution through substantial completion
Help direct cross-functional commissioning teams of 2-8+ commissioning engineers and technicians
Coordinate with project stakeholders (design engineers, contractors, facility operators, and client representatives) throughout the project lifecycle from the design phase through transition to operations
On our larger projects you will also conduct commissioning training for Owner’s operations staff and provide knowledge transfer documentation
Qualification
Required
Minimum 7 years of documented experience in leading the 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 the mechanical and controls commissioning of facilities with power densities exceeding 25kW per rack
Deep understanding of cooling plant sequences of operations and redundancy concepts, as well as their implementation in mission critical designs
Experience working in partnership with major cooling equipment manufacturers (JCI, Daiken, Trane, Vertiv, Schneider, etc)
Proficiency in the use of commissioning management software platforms (CxAlloy, ACC, Procore, Bluebeam, and similar platforms)
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
Technical Leadership: Ability to mentor junior staff and make critical technical decisions under pressure
Team Management: Manage commissioning schedules, ensure optimal team utilization, and provide coverage continuity across projects
Risk Management: Identify potential failure modes (schedule and technical) and develop mitigation strategies
Client Relations: Manage client stakeholder expectations and deliver technical updates with project team support
Problem-Solving: Systematic troubleshooting of complex integrated systems
Documentation: Create clear and detailed technical reports for diverse audiences
Adaptability: Ability to thrive in fast-paced environments with evolving project requirements
Script Development: Create and modify commissioning test scripts, adapting existing procedures for project-specific requirements
Design Review: Interpret project drawings and specifications, identify design issues, and communicate technical concerns effectively
Position requires 50% (annual estimate) overnight travel to project sites throughout North America
Must be able to work in active construction environments, climb ladders, and work in mechanical/electrical rooms
Availability for occasional emergency commissioning support and weekend/evening critical testing activities when required
Preferred
Bachelor's degree in related technical field
Professional Engineer (PE) license and PMP certifications are not required but are a differentiator for this role
Industry recognized commissioning certification (currently or pursuing) strongly preferred
Experience working on hyperscale data center projects (AWS, Microsoft, Google, Meta, etc)
Company
JLL
We’re a leading professional services firm that specializes in real estate and investment management.
10001+ employees
H1B Sponsorship
JLL has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
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Trends of Total Sponsorships
2025 (70)
2024 (47)
2023 (60)
2022 (68)
2021 (39)
2020 (43)
Funding
Current Stage
Public CompanyTotal Funding
$1.59B2025-11-03Post Ipo Debt· $565.35M
2023-11-08Post Ipo Debt· $400M
2019-05-29Post Ipo Debt· $46.5M
Leadership Team
Christian Ulbrich
Global Chief Executive Officer
John Gates
CEO, Leasing Advisory, Americas
Recent News
2026-01-07
Morningstar.com
2025-12-29
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