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

The Commissioning Manager is responsible for planning, coordinating, and executing the commissioning process for mission-critical data center projects. This role ensures that all systems (mechanical, electrical, controls, and IT infrastructure) are designed, installed, tested, and operated according to project requirements and industry standards, with a strong focus on reliability, efficiency, and uptime.

Key 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

Qualifications & Experience

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

Skills & Competencies

Strong leadership and project management skills
Excellent problem-solving and troubleshooting abilities
Ability to manage multiple stakeholders in high-pressure environments
Detail-oriented with strong documentation skills
Effective communication and reporting skills

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.