Join DayOne – Shaping the Future of Data Infrastructure

DayOne is a global leader in the development and operation of high-performance data centers. As one of the fastest-growing companies in the industry, we've built a robust presence across Asia and Europe — and we're just getting started.

As we expand into new international markets, we're looking for talented, driven individuals to join us on this exciting journey. This is more than a job — it's an opportunity to be a key contributor to our dynamic team and help shape the future of global data infrastructure.

If you're passionate about innovation, technology, and growth, we invite you to be part of DayOne's next chapter.

Job Summary

We are seeking a highly experienced and detail-oriented Commissioning Manager to lead and manage the commissioning activities for large-scale data center construction projects. The successful candidate will be responsible for overseeing the planning, execution, and documentation of the full commissioning lifecycle across mechanical, electrical, plumbing, controls, and life safety systems, ensuring delivery to the highest quality, safety, and performance standards.

Key Responsibilities

Leadership & Project Oversight
Lead and coordinate all commissioning phases from pre-design through turnover and closeout.
Manage multidisciplinary commissioning teams including engineers, third-party Cx agents, contractors, vendors, and consultants.
Serve as the primary point of contact for commissioning-related communication with clients, consultants, and project stakeholders.
Commissioning Planning
Develop project-specific Commissioning Plans and Commissioning Schedules.
Define commissioning scopes, protocols, and acceptance criteria aligned with owner's project requirements (OPR).
Ensure coordination of commissioning activities with the overall project schedule.
Execution & Quality Assurance
Oversee the commissioning of critical infrastructure systems including:

Electrical: UPS systems, switchgear, generators, PDUs, ATS, STS
Mechanical: HVAC systems, chillers, cooling towers, CRAH/CRAC units
Controls: Building Management Systems (BMS), Electrical Power Monitoring Systems (EPMS)

Ensure system integration testing (IST) and performance validation meets design intent.
Review and approve test scripts, method statements, and results documentation.
Documentation & Handover
Manage preparation of commissioning reports, final sign-off documents, and operational manuals.
Ensure punch list items are tracked and resolved prior to final project turnover.
Support the handover to operations and maintenance teams, including training sessions.
Risk & Compliance Management
Identify risks and develop mitigation strategies throughout the commissioning process.
Ensure compliance with industry standards (ASHRAE, Uptime Institute, ISO, LEED, etc.).
Enforce safety protocols and participate in safety audits related to commissioning activities.

Qualifications

Education:

Bachelor's Degree in Electrical, Mechanical, or relevant Engineering discipline.
Master's degree or equivalent experience is an advantage.

Experience

Minimum 8–12 years of experience in commissioning, with at least 4 years in a leadership role.
Proven track record managing commissioning in hyperscale or enterprise-level data centers or other mission-critical environments.

Certifications (Preferred But Not Mandatory)

Certified Commissioning Professional (CCP) – BCA
Commissioning Process Management Professional (CPMP) – ASHRAE
Project Management Professional (PMP) – PMI
Uptime Institute Accredited Tier Designer or Accredited Operations Specialist

Skills

Deep technical knowledge of electrical and mechanical systems in data centers.
Strong leadership, organizational, and stakeholder management skills.
Proficiency in commissioning management software (e.g., CxAlloy, Bluebeam, Procore).
Ability to analyze and resolve complex system integration issues.

DayOne is proud to be an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.

If you're ready to grow with one of the fastest-moving companies in the data center industry, apply now and be part of our global journey.