DayOne
The Cluster Security Manager oversees security operations across multiple data centre buildings within a cluster, safeguarding facilities, assets, and personnel. The role reports to the Cluster Building Services Manager and supports DayOne’s expanding international data centre operations.
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
Data Center Operations Security Program Manager
Serverfarm
Security Supervisor
Agensi Pekerjaan Versatile Creation Sdn Bhd
Data Center Operations Security Program Manager
Serverfarm
Security Manager
Grifols Egypt for Plasma Derivatives
Team Lead, Facilities Security
White-Horse-224
Physical Security Specialist
Hagerty