DayOne
DayOne Data Centers is seeking a Senior Mechanical Engineer to maintain and optimize mechanical infrastructure for its hyperscale data center campus in Lahti. The role involves ensuring the reliable operation of HVAC systems, chillers, and cooling equipment while supporting routine maintenance and emergency repairs. The engineer will collaborate with cross-functional teams to implement safety protocols and contribute to strategic initiatives for system performance and business growth.
Headquarters
Singapore, Central Region, Singapore
Company Size
1001-5000 employees
Founded
2022
DayOne is a pioneering data center company that develops and operates sustainable, interconnected digital infrastructure for hyperscale, cloud, and enterprise customers. The company delivers high-performance colocation capacity across Asia-Pacific markets including Singapore, Malaysia, Indonesia, Hong Kong, Japan, and Thailand, as well as Europe with a presence in Finland. DayOne is known for its proprietary SIJORI hub-and-spoke regional model and a strong commitment to sustainability and zero-carbon operations.
Headquarters
San Francisco, CA
Company Size
201-500 employees
Founded
2018
Industry
Technology
Glassdoor Rating
4.2 / 5
Sarah Johnson
Chief Executive Officer
Michael Chen
Chief Technology Officer
Emily Williams
VP of Engineering
David Rodriguez
VP of Product
Jessica Thompson
Chief Financial Officer
Andrew Park
VP of Sales
View leadership team, funding history,
and employee contacts for DayOne.
DayOne didn’t post a salary, so this is our estimate from similar listings.
Data center startup DayOne closes $2B+ funding round
Jan 6, 2026