DayOne
The Security Manager at DayOne develops and implements comprehensive security policies and procedures across a global cluster of high-performance data centers in Asia and Europe. This role involves overseeing daily operations, managing security staff and third-party vendors, and leading incident response efforts to ensure compliance with industry standards and regulations. The incumbent is responsible for risk management, budgeting, and promoting a culture of security awareness among all personnel.
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.
11% above the average for this role
Data center startup DayOne closes $2B+ funding round
Jan 6, 2026