Commissioning Manager​/Client Representative

Commissioning Manager / Client Representative for Mission Critical – Data Centers

Earth Stream Globalis currently hiring a Commissioning Manager / Client Representative to support the delivery of complex mission‑critical data centre projects. This role requires a commissioning professional with a strong background in Data Centre CX (Commissioning & Validation) who can act as a key interface between site teams, project teams, and the client, ensuring technical issues are identified early and resolved effectively.

The position is both technical and oversight‑focused, with responsibility for commissioning execution, quality control, and quality assurance throughout the project lifecycle.

• Act as the Client Representative for all commissioning activities on site.
• Lead and oversee Data Centre commissioning (CX) from early‑stage planning through IST, validation, and handover.
• Serve as the primary liaison between site teams, project management, vendors, and client/end‑user stakeholders.
• Proactively identify commissioning risks, technical issues, or programme conflicts and drive resolutions.
• Review and manage commissioning strategies, schedules, method statements, test scripts, and procedures.
• Ensure systems are commissioned in line with design intent, client standards, and operational requirements.

• Ensure all commissioning activities comply with the project Quality Management Plan.
• Implement and monitor Quality Control (QC) procedures during commissioning and testing activities.
• Carry out reviews of installation readiness, pre‑commissioning sign‑off, and test readiness.
• Verify accuracy and completeness of commissioning documentation, test records, and close‑out deliverables.
• Identify non‑conformances and coordinate corrective actions with construction, commissioning, and vendor teams.
• Support audits, client inspections, and quality reviews related to commissioning and system validation.
• Ensure handover documentation meets client QA/QC standards and operational acceptance criteria.

• Facilitate communication between construction, commissioning agents, QA/QC teams, and client stakeholders.
• Track progress against commissioning milestones and highlight risks to programme or quality.
• Provide regular status updates, technical reports, and issue logs to the client and project leadership.
• Support witnessing, validation, and acceptance testing activities.

• Proven experience as a Commissioning Manager, Lead Commissioning Engineer, or Client Representative on mission‑critical data centre projects.
• Strong expertise in Data Centre CX, including mechanical, electrical, controls, and Integrated Systems Testing (IST).
• Demonstrated experience with quality control and quality assurance within commissioning environments.
• Strong knowledge of critical infrastructure systems (HV/LV distribution, UPS, generators, cooling systems, BMS).
• Experience representing the client or end user is highly desirable.
• Excellent stakeholder engagement, problem‑solving, and communication skills.
• Ability to work collaboratively on site and manage multi‑disciplinary teams.
• Strong documentation, reporting, and organisational skills.