Maintenance Planner

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 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.

• 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.

• 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.

• Ensuring maintenance activities comply with relevant health, safety, and environmental regulations.
• Maintaining documentation and records required for audits and certifications.

• 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.

• 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.

• 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.