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 Commissioning Engineer with expertise in data center construction to oversee and execute the commissioning process of critical infrastructure systems. The ideal candidate will play a key role in ensuring the mechanical, electrical, plumbing, and life safety systems function according to design specifications and meet the performance standards required for hyperscale or enterprise-level data centers. Key Responsibilities: Commissioning Execution: Plan, coordinate, and execute the commissioning of electrical, mechanical, BMS, and other critical systems. Review design documents, submittals, and specifications to ensure compliance with project requirements. Lead and document functional performance tests, integrated systems testing, and acceptance criteria. Project Coordination: Collaborate with construction teams, vendors, and subcontractors to ensure systems are installed and commissioned on schedule. Attend project meetings and interface with stakeholders including design engineers, construction managers, and client representatives. Documentation & Reporting: Prepare commissioning plans, scripts, and test procedures in accordance with industry standards (ASHRAE, Uptime Institute, etc.). Generate detailed commissioning reports, punch lists, and close-out documents. Maintain accurate logs of all commissioning activities and issues for resolution. Quality & Compliance: Ensure compliance with local codes, safety standards, and company policies. Identify and mitigate risks during the commissioning process. Systems Expertise (Examples): Electrical: UPS, switchgear, transformers, generators, PDUs. Mechanical: CRAC/CRAH units, chillers, cooling towers, pumps, HVAC controls. Controls: BMS, EPMS, SCADA systems. Qualifications: Education: Bachelor’s degree in Electrical, Mechanical, or relevant Engineering discipline. (Relevant certifications or trade qualifications considered for candidates with significant experience.) Experience: 3–7 years of commissioning experience in data center or mission-critical environments. Familiarity with commissioning standards and best practices (ASHRAE, Uptime Institute Tier Guidelines, LEED, etc.) Certifications (preferred): Commissioning Process Management Professional (CPMP) Certified Commissioning Professional (CCP) PMP or other project management certifications Technical Skills: Proficient in reading technical drawings, specifications, and control schematics. Experience using commissioning tools and software (CxAlloy, Bluebeam, etc.) Soft Skills: Strong problem-solving and analytical thinking. Excellent communication and interpersonal skills. Ability to work independently and within a cross-functional team environment. 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. DayOne is a data center pioneer that develops and operates next-gen digital infrastructure for industry leaders who demand reliable, cost-effective and quickly scalable solutions. Our cutting-edge facilities empower hyperscalers and large enterprises to achieve rapid deployment and enhance connectivity, driving transformative engagement and innovation as we shape the future of industries. DayOne's data centers are located across key markets, including Singapore, Johor (Malaysia), Batam (Indonesia), Greater Bangkok, Hong Kong SAR, Tokyo, and beyond. Headquartered in Singapore, DayOne’s leadership team draws on over two decades of industry experience and a track record of building Asia's largest data center business. With DayOne, they have created the SIJORI (Singapore, Johor, and Riau Islands) market as a global data center hub. As demand for strategically located and customized data centers rises, DayOne's entrepreneurial spirit, customer-first strategy, deep local partnerships, and agile executional capabilities uniquely position us to power the growth ambitions of leading hyperscalers and large enterprises around the world. We’d love to get to know you! Tell us a bit about your background, experience, and what you're looking for in your next opportunity. The more we know, the better we can match you with roles that fit your goals. Let’s start with: - Your professional background, upload a copy of your latest resume. - Key skills and strengths - Career interests and goals This is your moment — make it count!

Commissioning Engineer.

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