Shift Lead

DayOne; Lahti; On-site; EUR 65,000 - 90,000; Full time

Job summary

DayOne is building its flagship hyperscale data center campus in Lahti, Finland. We seek a hands-on Shift Supervisor to lead a team of shift technicians, ensure safe, reliable operations, and coordinate with stakeholders.

You will supervise daily operations, manage incidents, and drive continuous improvement within a critical environment. Fluency in English is required; Finnish is a plus.

Qualifications

• Must have leadership experience supervising a technical team in a critical operations environment.
• Strong knowledge of data center infrastructure including power, cooling, and fire suppression systems.
• Fluent in English; Finnish language skills are a plus.

Responsibilities

• Lead and supervise a team of shift technicians to perform duties effectively.
• Oversee day-to-day data center operations and ensure critical systems run reliably.
• Coordinate incidents, handovers, and escalation with stakeholders and vendors.
• Foster a safe, compliant, and continuous improvement culture.

Skills

Team leadership

Communication skills

English proficiency

Education

Electrical/Mechanical/Building Services Eng qualification

Tools

Data center knowledge

Power distribution

UPS systems

Cooling systems

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.

Responsibilities

Leadership and Supervision

• Leading and managing a team of shift technicians, ensuring they perform their duties effectively.
• Providing guidance and support to team members, fostering a collaborative and productive work environment.
• Conducting regular performance reviews and providing feedback to team members.

Operations, Incident & Shift Management

• Overseeing day-to-day data center operations and ensuring critical systems are operating efficiently.
• Monitoring facility infrastructure, manage incidents, and coordinate timely escalation and resolution of issues.
• Providing technical guidance to the shift team and collaborate with internal stakeholders, vendors, and support teams to address operational challenges.
• Ensuring effective shift handovers through clear communication, reporting, and documentation of incidents, activities, and ongoing actions.

Safety, Compliance & Continuous Improvement

• Ensuring compliance with safety procedures, operational standards, and regulatory requirements.
• Identifying opportunities for process improvements, operational efficiencies, and implementation of best practices.

Requirements

Technical skills

• Technical qualification in Electrical, Mechanical, Building Services Engineering, or a related field.
• Previous experience in an operational role in a data center, mission-critical facility, industrial plant, or similar critical environment including responsibility for supervising or coordinating team activities.
• Knowledge of data center infrastructure, including power distribution, generators, UPS systems, cooling systems, and fire suppression systems.

Soft skills

• Demonstrated ability to lead, coach, and develop teams in a technical or operational environment.
• Proactive, solutions-oriented mindset with high integrity and a collaborative working style.
• Knowledge of and adherence to health, safety, and compliance procedures in a critical operations environment.
• Proficiency in English, both written and spoken.
• Knowledge of Finnish is a plus.

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.

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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