Senior Data Center Commissioning Manager

DayOne; Johor; On-site; MYR 180,000 - 300,000; Full time

Job summary

DayOne is seeking a seasoned Commissioning Manager to lead the commissioning of mission-critical data center projects. You will coordinate design reviews, pre-functional and functional testing, and handover to operations, ensuring reliability and uptime across electrical, mechanical and IT infrastructure.

With 8–15+ years of experience, you will manage budgets, schedules and stakeholders, enforce ASHRAE and Uptime guidelines, and mentor operations teams through IST and documentation, helping

Qualifications

• Bachelor’s degree in Mechanical, Electrical, or related Engineering field.
• 8–15+ years of experience in mission-critical facilities or data centers.
• Proven experience managing commissioning for Tier III / Tier IV data centers.
• Strong knowledge of: Electrical distribution systems (MV/LV); Cooling systems and redundancy configurations; Control systems and automation.
• Familiarity with commissioning standards and best practices.

Responsibilities

• Lead and manage the full commissioning lifecycle from design review through to handover and post-occupancy support
• Develop and implement commissioning plans, procedures, and schedules
• Coordinate with design consultants, contractors, vendors, and client stakeholders
• Review design documents to ensure commissionability and operational efficiency
• Oversee pre-functional and functional testing of systems including: Electrical systems (UPS, generators, switchgear); Mechanical systems (HVAC, CRAH/CRAC units, chillers); Building Management Systems (BMS) / DCIM
• Manage integrated systems testing (IST) and simulate failure scenarios
• Ensure compliance with industry standards such as ASHRAE and Uptime Institute guidelines
• Identify, track, and resolve commissioning issues and deficiencies
• Prepare and maintain commissioning documentation, reports, and checklists
• Support training of operations teams and ensure smooth handover
• Manage commissioning budgets, timelines, and resources

Skills

Leadership

Project Management

Problem Solving

Stakeholder Mgmt

Documentation

Communication

Education

Bachelor's degree in Mechanical, Electrical or related Engineering

Job description

DayOne is seeking a seasoned Commissioning Manager to lead the commissioning of mission-critical data center projects. You will coordinate design reviews, pre-functional and functional testing, and handover to operations, ensuring reliability and uptime across electrical, mechanical and IT infrastructure.

With 8–15+ years of experience, you will manage budgets, schedules and stakeholders, enforce ASHRAE and Uptime guidelines, and mentor operations teams through IST and documentation, helping