Senior Commissioning Manager

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.

DayOne is a global leader in the development and operation of high-performance data centers, and one of the fastest-growing companies in the industry, with a strong presence across Asia and Europe. As we continue our exciting expansion into new international markets, we are seeking talented individuals who are passionate about joining us on this growth journey. This is an excellent opportunity to become a key member of our dynamic team and play an integral role in our rapid expansion

Job Summary
We are seeking an accomplished
Commissioning Senior Manager
to lead and oversee the commissioning function across one or more complex
data center construction
projects. This role requires deep technical expertise, leadership across cross-functional teams, and a strong focus on quality, risk management, and client satisfaction. The successful candidate will ensure the successful delivery of mission-critical infrastructure, from pre-design through integrated systems testing and handover.

Key Responsibilities
Strategic Leadership

• Lead the commissioning strategy and execution for multiple concurrent or large-scale data center projects.
• Define and standardize commissioning processes, tools, and best practices across the project portfolio.
• Act as the senior technical authority for all commissioning activities.

Project Oversight

• Oversee commissioning teams, third-party agents, OEMs, and contractors during commissioning lifecycle.
• Provide governance, review, and sign-off on commissioning plans, schedules, and protocols.
• Interface with clients, consultants, and internal stakeholders at senior levels, ensuring expectations are aligned and met.

Team & Resource Management

• Manage and mentor a team of Commissioning Managers, Engineers, and Technicians.
• Plan and allocate resources efficiently across multiple project sites.
• Support hiring, training, and performance management of commissioning personnel.

Quality, Risk, & Compliance

• Establish KPIs and ensure delivery meets or exceeds design intent, performance, and uptime requirements.
• Lead risk reviews and ensure mitigation plans are in place for high-impact systems or stages (e.g., IST).
• Ensure full compliance with codes, standards, and client-specific requirements (ASHRAE, Uptime Tier Guidelines, LEED, ISO, etc.)

Testing & Turnover

• Lead the execution and review of:

• Factory Acceptance Testing (FAT)

• Site Acceptance Testing (SAT)

• Integrated Systems Testing (IST)

• Oversee final documentation, commissioning reports, redlines, and turnover packages.

• Ensure successful handover to operations teams and facilitate knowledge transfer sessions.

Core Systems Overseen

• Electrical: UPS systems, MV/LV Switchgear, Generators, PDUs, ATS/STS, Busways
• Mechanical: Chillers, CRAHs, Cooling Towers, Pumps, HVAC Controls
• Controls: BMS, EPMS, SCADA, Fire Detection & Suppression Systems
• Other Critical Systems: Life safety, structured cabling infrastructure

Qualifications
Education:

• Bachelor's or Master's Degree in Mechanical, Electrical, or related Engineering discipline.

Experience

• 10–15+ years of relevant experience in commissioning/data center delivery.
• 5+ years in a leadership or multi-project management role.
• Proven track record of leading large-scale commissioning efforts for hyperscale or enterprise data centers.

Certifications (Preferred)

• Certified Commissioning Professional (CCP) – BCA
• Commissioning Process Management Professional (CPMP) – ASHRAE
• Project Management Professional (PMP) – PMI
• Uptime Institute Accredited Tier Designer or Specialist
• LEED AP or equivalent is a plus

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.