Senior Electrical Engineer

About DayOne Data Centers

DayOne Data Centers is a Singapore-headquartered global digital infrastructure platform that develops and operates next-generation data centers across Asia Pacific and Europe. Trusted by leading hyperscalers and businesses, the company engineers, builds, and operates high-capacity, AI-ready campuses with speed, scale, and reliability.

Job Summary

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.

Electrical Engineer plays a crucial role in maintaining the electrical infrastructure and systems of our hyperscale data centres. The role involves ensuring continuous and efficient operation of all electrical systems,

Key Responsibilities

• Electrical System Management

• Assist in the design, installation, operation, and maintenance of electrical systems, including power distribution units, uninterruptible power supplies (UPS), generators, and switchgear.

• Ensure all electrical infrastructure operates efficiently, with minimal downtime, and adheres to established performance standards.

• Support the implementation and maintenance of electrical safety policies and best practices.

• Maintenance and Upgrades

• Perform preventative and corrective maintenance activities, ensuring all electrical equipment and systems are serviced according to company and manufacturer standards.

• Assist in coordinating with vendors and contractors during electrical maintenance and upgrade projects, ensuring minimal disruption to data centre operations.

• Monitor system performance and recommend improvements or upgrades as necessary.

• Technical Support and Troubleshooting

• Provide hands-on technical expertise to troubleshoot and resolve electrical issues in a timely manner, ensuring minimal impact on data centre operations.

• Collaborate with other engineering and operations teams to ensure integrated and efficient system performance.

• Maintain up-to-date documentation and records to support operational continuity and compliance requirements. Safety and Compliance:

• Adhere to all relevant health, safety, and environmental regulations, ensuring compliance with industry standards and best practices.

• Participate in safety audits and contribute to the continuous improvement of safety protocols within the data centre. Strategic Initiatives:

• Support the Electrical Engineering Manager and Critical Services Manager in developing and implementing strategic initiatives to enhance electrical system performance and support business growth.

• Team Collaboration

• Work closely with other engineers, technicians, and the Electrical Engineering Manager to ensure seamless 24/7 operations.

• Participate in training and development programs to enhance personal and team capabilities.

• What We’re Looking For

• Degree in Electrical Engineering or a related field.

• 3-5 years of experience in electrical engineering, preferably within a data centre or critical infrastructure environment.

• Strong knowledge of electrical infrastructure including power distribution, UPS systems, generators, and switchgear, and the ability to resolve complex electrical challenges.

• Effective communication skills and the ability to work effectively with a multidisciplinary team.

• Proficiency in English, both written and spoken. Knowledge of Finnish is a plus.

• Ability to work in a fast-paced operational environment.

• Proactive, solutions-oriented mindset with high integrity and a collaborative working style.

• 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.