Asso Lead Mechanical

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.   

Job Description

Position Title: Mechanical Subject Matter Expert (SME) -Data Center Delivery
Business Line: Project & Development Services / Project Management Consultancy
Location: Project-based
Reporting To: Project Director / Program Director
Role Level: Mid-Level Technical Leadership

1. Position Summary

The Mechanical Subject Matter Expert (SME) / Mechanical Subject Manager is responsible for providing technical leadership, governance, and delivery assurance for all mechanical systems on data center construction projects delivered under a Project Management Consultancy (PMC) model.

Acting as the client’s technical representative for mechanical disciplines, this role ensures that mechanical design, construction, testing, commissioning, and handover activities meet mission-critical performance requirements, applicable standards, and client operational objectives. The position works in close collaboration with Project Managers, Project Directors, consultants, contractors, and vendors to ensure coordinated, compliant, and high-quality delivery across one or multiple data center projects.

2. Key Responsibilities

Mechanical Scope Leadership

• Lead and manage all mechanical aspects of data center projects from design development through construction, commissioning, and handover.
• Provide technical governance and assurance to ensure alignment with client standards, operational requirements, and project objectives.
• Act as the primary technical authority for mechanical systems within the PMC delivery team.

Design Review & Technical Approvals

• Review and provide technical input on mechanical designs, specifications, calculations, layouts, and schematics.
• Review and comment on shop drawings, material submittals, method statements, and installation procedures.
• Ensure mechanical designs comply with applicable codes, standards, client requirements, and data center best practices.
• Support resolution of design queries and technical clarifications during construction.

Contractor & Consultant Coordination

• Coordinate closely with mechanical contractors, subcontractors, vendors, and multidisciplinary consultants.
• Provide on-site technical oversight to ensure works are executed in accordance with approved designs and quality standards.
• Participate in technical workshops, coordination meetings, and site progress reviews.
• Manage interfaces between mechanical systems and other disciplines including electrical, ICT, controls, fire protection, and civil works.
• Support timely resolution of construction, technical, and interface-related issues.

Construction Oversight, Testing & Commissioning

• Monitor mechanical installation, testing, and commissioning activities on site.
• Review and approve inspection and test plans (ITPs), factory acceptance tests (FATs), site acceptance tests (SATs), and commissioning procedures.
• Support integrated systems testing (IST), including full-load and resilience testing where applicable.
• Verify mechanical system performance against redundancy, reliability, and operational criteria.
• Support readiness-for-operations activities and transition to facilities and operations teams.

Risk, Quality & Safety Support

• Identify mechanical-related risks and support development of mitigation measures.
• Ensure compliance with quality assurance processes, safety requirements, and statutory regulations.
• Participate in safety reviews, audits, and incident investigations related to mechanical works.
• Support close-out of non-conformances, defects, and punch list items prior to handover.

3. Technical Expertise (Data Center Focus)

• Data center and mission-critical mechanical systems delivery.
• Cooling technologies including CRAC/CRAH units, chilled water systems, DX systems, free cooling, and liquid cooling solutions.
• HVAC systems, airflow management, and hot aisle / cold aisle containment strategies.
• Mechanical redundancy architectures (N, N+1, 2N, distributed systems).
• Heat rejection systems including cooling towers, dry coolers, and adiabatic systems.
• Interface with fire protection and life safety systems.
• Compliance with Uptime Institute Tier I–IV standards.
• Knowledge of relevant codes and standards including ASHRAE, NFPA, and applicable local regulations.

4. Qualifications & Experience

Education

• Bachelor’s degree in Mechanical Engineering or an equivalent technical discipline.

Experience

• 15-20 years of overall experience in mechanical engineering or mechanical systems delivery.
• Direct experience on data center or mission-critical infrastructure projects.
• Proven experience supporting full lifecycle delivery from design through commissioning and handover.

Professional Certifications (Preferred, Not Mandatory)

• Chartered Engineer (CEng), Professional Engineer (PE), or equivalent.
• Data center–specific certifications (e.g., Uptime Institute ATD, CDCP).
• Commissioning or HVAC-related certifications are an advantage.

5. Core Competencies

• Strong technical judgment and attention to detail.
• Effective contractor coordination and interface management skills.
• Clear and confident communication with clients and multidisciplinary project teams.
• Practical problem-solving and technical decision-support capability.
• Ability to perform effectively in fast-paced, high-risk, mission-critical delivery environments.
• Proactive, collaborative, and delivery-focused mindset.

Location:

Scheduled Weekly Hours:

If this job description resonates with you, we encourage you to apply even if you don’t meet all of the requirements.  We’re interested in getting to know you and what you bring to the table!

At JLL, we harness the power of artificial intelligence (AI) to efficiently accelerate meaningful connections between candidates and opportunities. Using AI capabilities, we analyze your application for relevant skills, experiences, and qualifications to generate valuable insights about how your unique profile aligns with the specific requirements of the role you're pursuing.

JLL Privacy Notice

Jones Lang LaSalle (JLL), together with its subsidiaries and affiliates, is a leading global provider of real estate and investment management services. We take our responsibility to protect the personal information provided to us seriously. Generally the personal information we collect from you are for the purposes of processing in connection with JLL’s recruitment process. We endeavour to keep your personal information secure with appropriate level of security and keep for as long as we need it for legitimate business or legal reasons. We will then delete it safely and securely.

For more information about how JLL processes your personal data, please view our Candidate Privacy Statement.

For additional details please see our career site pages for each country.

Jones Lang LaSalle (“JLL”) is an Equal Opportunity Employer and is committed to working with and providing reasonable accommodations to individuals with disabilities.  If you need a reasonable accommodation because of a disability for any part of the employment process – including the online application and/or overall selection process – you may email us at HRSCLeaves@jll.com. This email is only to request an accommodation. Please direct any other general recruiting inquiries to our Contact Us page > I want to work for JLL.