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. About the Role DayOne is building its flagship hyperscale data center campus in Lahti, on a former industrial site in Kiveriö. The campus is designed to use Finland's naturally cool climate for free cooling, with air-cooled chillers that remove the need for freshwater cooling. Join the Lahti team early and help shape how a campus of this scale is built, commissioned, and run. As a Maintenance Planner, you will be responsible for overseeing maintenance planning activities that support the reliable operation of data center infrastructure. You will work closely with engineers, technicians, vendors, and contractors to coordinate planned preventative maintenance, support corrective maintenance activities, and ensure maintenance information remains accurate and up to date. Your key responsibilities will include, Maintenance Planning and Coordination Planning and coordinating asset management services, including preventative and corrective maintenance activities. Supporting condition monitoring and lifecycle planning activities. Ensuring systems are serviced in accordance with manufacturer and company standards. Coordinating maintenance and upgrade projects with vendors and contractors. Following up on Change Management approvals. Preparing and maintaining the 52-week maintenance plan. CMMS and Documentation Management Ensuring maintenance data remains complete and accurate within the CMMS system. Maintaining records related to maintenance reports, faults, asset information, and spare parts. Utilizing the CMMS system for planning and records management activities. Safety and Compliance Ensuring maintenance activities comply with relevant health, safety, and environmental regulations. Maintaining documentation and records required for audits and certifications. Operational Support and Strategic Initiatives Collaborating with engineering and operations teams to support efficient system performance. Supporting reporting requirements for operational leadership. Participating in budget planning and cost management activities to support operational efficiency and financial performance. Requirements Technical skills Degree in Engineering, Computer Science, Business Administration, or a related field. 3–5 years of experience in maintenance planning, ideally within a critical environment or data center. Strong experience using Computerized Maintenance Management Systems (CMMS). Experience supporting technical teams and 24/7 operational environments. High attention to detail and accuracy in planning, documentation, and analysis. Soft skills Flexibility to manage changing priorities in a fast-paced and dynamic environment. Proactive, solutions-oriented mindset with high integrity and a collaborative working style. Proficiency in English, both written and spoken. Knowledge of Finnish is considered a benefit. Why Join DayOne? Be a part of a company scaling fast in a booming industry. Work on an international stage with global leaders. Shape your career in a culture that values curiosity, agility, and bold thinking. 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!

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