Cluster Operations Manager

DayOne Data Centers Ltd.; Lahti; Hybrid; EUR 90,000 - 130,000; Full time

Job summary

DayOne Data Centers Ltd. in Lahti, Finland, seeks a Cluster Operations Manager to lead day-to-day and 24/7 operations across multiple data centers. You will drive uptime, safety, and performance while guiding technical and operations teams.

The role requires 7–10 years in data center ops with 3–5 years in management, strong leadership, English proficiency, and a proactive, collaborative mindset.

Qualifications

• 7–10 years of experience in data center operations.
• 3–5 years in a managerial or lead role within a data center.
• Strong knowledge of power, cooling and network infrastructure.

Responsibilities

• Oversee day-to-day operations of multiple data centers within the cluster.
• Ensure uptime objectives and SLAs are met with reliable systems.
• Lead and mentor operations and technical teams for 24/7 coverage.
• Plan maintenance, upgrades and incident response activities.
• Maintain safety, compliance and audit-ready documentation.
• Collaborate with Campus Director on strategic initiatives and budgets.

Skills

Data center operations

Power systems

Cooling systems

Network systems

Team management

24/7 operations

English proficiency

Education

Bachelor's degree in Engineering/IT or related field

Job description

Cluster Operations Manager# Careers## Cluster Operations ManagerApply: Lahti: Full time: Posted Today: JR3463Join 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, apply now and be part of our global journey.