JLL supports the Whole You, personally and professionally.
Our people at JLL are shaping the future of real estate for a better world by combining world class services, advisory and technology to our clients. We are committed to hiring the best, most talented people in our industry; and we support them through professional growth, flexibility, and personalized benefits to manage life in and outside of work. Whether you’ve got deep experience in commercial real estate, skilled trades, and technology, or you’re looking to apply your relevant experience to a new industry, we empower you to shape a brighter way forward so you can thrive professionally and personally.
Position Title: Commissioning Subject Matter Expert (SME) – Data Center Delivery
Business Line: Project & Development Services / Project Management Consultancy
Reporting To: Project Director / Program Director / Technical Director
Role Summary
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The Commissioning Subject Matter Expert (SME) is a senior technical authority responsible for providing commissioning leadership across the delivery of data center and mission‑critical projects
The role represents the client’s operational and reliability interests, ensuring that all building systems are installed, tested, integrated, and validated to meet performance, resilience, redundancy, safety, and compliance requirements. The Commissioning SME supports projects from early design and commissioning strategy development through construction, Integrated Systems Testing (IST), operational readiness, and handover, with a strong focus on technical governance, systems integration, risk management, and performance assurance in fast‑track environments.
Key Responsibilities
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Commissioning Leadership & Project Delivery
Provide end‑to‑end commissioning technical oversight across data center projects from early design through handover and operational readiness. Act as the commissioning technical authority , advising the client on commissioning strategies, sequencing, risks, and technical options. Develop, review, and manage the project commissioning plan in alignment with Employer’s Requirements (ERs), operational objectives, and resilience criteria. Support development and implementation of commissioning strategies aligned with program, phasing, live environment constraints, and reliability targets.
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Review design documentation to ensure systems are commissionable, testable, and operable, including: Mechanical, electrical, and plumbing (MEP) systems ELV, BMS, EPMS, DCIM, and control systems Fire detection, suppression, and life safety systems CSA interfaces impacting commissioning and access Ensure commissioning requirements are embedded in design specifications, sequences of operation, and control narratives. Verify compliance with: Local codes and authority requirements International standards and guidelines (e.g., ASHRAE, CIBSE, NFPA, IEC, ISO) Client data center commissioning and reliability standards (e.g., Uptime Institute, client-specific protocols) Participate in design reviews, technical workshops, constructability, and value engineering sessions with a commissioning focus.
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Provide commissioning oversight during construction to ensure systems are installed in accordance with approved designs and commissioning requirements. Review and approve commissioning-related submittals, including: Pre-functional checklists (PFCs) Factory Acceptance Tests (FATs) Site Acceptance Tests (SATs) Commissioning procedures and scripts Conduct site inspections and readiness reviews to verify installation completeness prior to testing. Support resolution of commissioning-related RFIs, non‑conformances, and field changes. Monitor commissioning execution quality, documentation, and adherence to approved test protocols. Support punch list management and commissioning close‑out activities.
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Coordinate closely with: MEP, ELV, IT, and CSA teams to ensure end‑to‑end system integration Contractors, vendors, and OEMs for testing, sequencing, and validation Commissioning authorities, third‑party testers, and client operations teams Ensure effective coordination of commissioning activities within construction and project schedules. Lead or support Integrated Systems Testing (IST), end‑to‑end testing, and failure scenario validation. Ensure smooth transition from construction completion to operational readiness.
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Identify commissioning risks related to system integration, sequencing, redundancy, controls, and operational continuity. Support phased commissioning strategies, including brownfield and live environment projects where applicable. Contribute to value engineering initiatives while safeguarding performance, reliability, and maintainability. Provide technical input to change management, variations, and claims related to commissioning scope. Support schedule and cost impact assessments in coordination with project controls teams.
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Commissioning of mission‑critical systems including: Electrical power systems (UPS, generators, switchgear, PDUs) Mechanical cooling systems (chillers, CRAH/CRAC, containment) Control systems (BMS, EPMS, DCIM) Fire protection and life safety systems Execution of Level 1–5 commissioning and Integrated Systems Testing (IST). Validation of redundancy, failover, and resilience under simulated fault conditions. Support operational readiness, training, SOP development, and handover documentation.
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Act as the primary commissioning technical advisor to the client. Support senior leadership in managing client expectations related to performance, reliability, and readiness. Clearly present commissioning risks, test results, and readiness status to stakeholders. Coordinate with designers, contractors, vendors, and operations teams. Maintain accurate commissioning records, test results, and acceptance documentation.
Qualifications & Experience
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Education
Bachelor’s degree in mechanical engineering, Electrical Engineering, Building Services Engineering, or a related discipline.
Professional Certifications (Preferred)
Certified Commissioning Professional (CCP), BCxP, or equivalent. Data center commissioning certifications (e.g., Uptime Institute ATD, CDCP) are advantageous.
Experience
15–20 years of experience in commissioning, testing, or technical advisory roles. Proven experience commissioning data center or mission‑critical infrastructure projects.
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Advanced understanding of commissioning processes, test methodologies, and acceptance criteria. Strong knowledge of MEP, ELV, controls, and system integration. Familiarity with commissioning management tools, test scripts, and reporting platforms. BIM and digital coordination tools for commissioning readiness reviews. Strong technical reporting, documentation, and governance skills.
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High level of technical authority and professional judgment. Strong leadership in multidisciplinary testing and commissioning environments. Clear communication with technical and non‑technical stakeholders. Detail-oriented with a structured, risk-based approach. Collaborative mindset with strong coordination and facilitation skills.
If this job description resonates with you, we encourage you to apply even if you don’t meet all of the requirements below. We’re interested in getting to know you and what you bring to the table!
Personalized benefits that support personal well-being and growth:
JLL recognizes the impact that the workplace can have on your wellness, so we offer a supportive culture and comprehensive benefits package that prioritizes mental, physical and emotional health.
About JLL –
We’re JLL—a leading professional services and investment management firm specializing in real estate. We have operations in over 80 countries and a workforce of over 102,000 individuals around the world who help real estate owners, occupiers and investors achieve their business ambitions. As a global Fortune 500 company, we also have an inherent responsibility to drive sustainability and corporate social responsibility. That’s why we’re committed to our purpose to shape the future of real estate for a better world. We’re using the most advanced technology to create rewarding opportunities, amazing spaces and sustainable real estate solutions for our clients, our people, and our communities.
Our core values of teamwork, ethics and excellence are also fundamental to everything we do and we’re honored to be recognized with awards for our success by organizations both globally and locally.
Creating a diverse and inclusive culture where we all feel welcomed, valued and empowered to achieve our full potential is important to who we are today and where we’re headed in the future. And we know that unique backgrounds, experiences and perspectives help us think bigger, spark innovation and succeed together.
