Cluster Operations Manager

DayOne; Lahti; On-site; EUR 90,000 - 120,000; Full time

Job summary

DayOne is building its flagship hyperscale data center campus in Lahti, Finland. You will oversee the operational management of multiple facilities within a designated cluster and lead technical teams to ensure reliable uptime and service quality.

The role focuses on managing power, cooling, and network infrastructure, guiding incident response, and driving maintenance plans to support 24/7 operations in a fast-growing global company.

Qualifications

• Degree in Engineering, Information Technology, or a related field.
• Strong knowledge of data center infrastructure including power, cooling, and network systems.
• Experience managing technical teams and 24/7 operational environments.

Responsibilities

• Operational management of multiple data centers within the cluster.
• Lead 24/7 operations, incident response, and service restoration.
• Mentor and develop ops and technical teams; coordinate shifts.
• Plan preventive and corrective maintenance with vendors.
• Ensure safety, compliance, and audits including ISMS and SOC2.
• Collaborate with customer support for 24/7 smart hands services.

Skills

Data center operations

Team leadership

Power systems

Cooling systems

Network systems

Incident management

Vendor coordination

Safety & compliance

English communication

Education

Degree in Engineering or IT

Tools

ISMS

SOC 2

Job description

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 Cluster Operations Manager, you will oversee the operational management and performance of multiple data center facilities within a designated cluster. You will ensure the continuous and efficient operation of critical infrastructure, maintain high service delivery standards, and lead technical and operational teams responsible for delivering mission-critical services around the clock.

Your key responsibilities will include:

• Operational Management Overseeing the day-to-day operations of multiple data centers within the cluster. Ensuring all systems and infrastructure operate reliably while meeting uptime objectives and customer service level agreements. Implementing and maintaining operational policies, procedures, and best practices. Managing incident response, troubleshooting, and service restoration activities. Measuring operational metrics, analyzing data, and identifying risks.
• Team Leadership Leading, mentoring, and developing operations and technical teams. Coordinating shift teams to ensure effective 24/7 coverage and smooth handovers. Conducting training activities to support capability development and operational excellence.
• Maintenance and Upgrades Planning and overseeing preventive and corrective maintenance activities. Ensuring equipment and systems are maintained according to manufacturer and company standards. Coordinating with vendors and contractors during maintenance and upgrade projects.
• Safety and Compliance Ensuring all operations comply with health, safety, and environmental requirements. Maintaining documentation and operational records to support audits and certifications. Ensuring compliance with site accreditations such as ISMS and SOC2.
• Customer Support Collaborating with customer support teams to deliver smart hands services. Addressing operational queries and issues while maintaining a high standard of customer satisfaction.
• Strategic Initiatives Supporting the Campus Director in implementing initiatives that improve operational performance and support growth. Participating in budget planning and cost management activities.

Requirements

Technical skills

Degree in Engineering, Information Technology, or a related field. Minimum 7-10 years of experience in data center operations, including 3-5 years in a managerial role. Strong knowledge of data center infrastructure, including power, cooling, and network systems. Proven experience managing technical teams and 24/7 operational environments.

Soft skills

Strong communication and interpersonal skills, with the ability to collaborate effectively with internal and external stakeholders. Proactive, solutions-oriented mindset with high integrity and a collaborative working style. Ability to work in a fast-paced operational environment. 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, 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.

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