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.

DayOne builds and operates hyperscale data centers across eight markets: Singapore, Malaysia, Indonesia, Thailand, Hong Kong, Japan, Finland and Spain. We raised US$4.5 billion in Series C funding to keep building.

Global Engineering Reliability Authority (GERA) sits above our site operations teams and our Mission Critical Response (MCR) teams, the specialists who respond when a site hits a critical event. It runs three parallel disciplines: Electrical, Mechanical, and Reliability.

GERA does not run sites day to day. It sets the standards sites run to, at regional and global level, and it is who a site calls when a problem outruns standard procedure. We are building it out across Southeast Asia now, and you would be one of the first into this discipline.

About The Role

Reliability keeps equipment performing as buildings move through the defects liability period (DLP), the window after handover when the contractor still carries defect risk, and into long term operation. Once a building is through DLP, every fault is ours.

That is where maintenance workmanship and operating parameters start showing up in the performance data. Your authority comes from the governance you build and the evidence you bring, not from headcount.

What You Will Do

Reliability governance

Own the reliability governance framework and the systemic risk register, with defined risk categories and matching mitigations.
Run operational risk assessment using Failure Mode and Effects Analysis (FMEA), and keep the register current against what it finds.
Where a permanent fix is not viable in live operation, own the containment and hold the plan that gets to permanent resolution.

Problem management

Lead problem management: root cause analysis, corrective and preventive action (CAPA), and major incident review.
Build and maintain DayOne's Known Error Database (KEDB), so a recurring issue is solved once and closed everywhere.
Drive equipment vendors through component failure investigation to a root cause, not a parts swap.

Performance and lifecycle

Catch deterioration before it becomes failure, tracking equipment performance including power usage effectiveness (PUE) and water usage effectiveness (WUE).
Raise availability through preventive, predictive and condition based maintenance, using equipment health data, alarms and failure trends.
Plan and run major maintenance, overhauls and cyclic replacement, and manage end of life (EOL) and end of service life (EOSL) transitions and asset refresh.

Assets, vendors and capability

Maintain system specification and critical spares data using Risk Priority Number (RPN) methodology.
Hold internal stakeholders, original equipment manufacturers (OEMs), service providers, consultants and contractors to consistent maintenance quality.
Build regional depth in mission critical operations.

Requirements

Technical skills

A bachelor's degree in mechanical or electrical engineering, building services engineering or a related discipline.
6+ years in critical infrastructure operations, with substantial time managing critical equipment, preferably in data centers.
A strong grasp of local and international standards on equipment maintenance scope, frequency and operating parameters, and of local regulation in operations and maintenance management.
Commissioning experience.
Track record leading complex incident response, advanced fault diagnosis and forensic root cause analysis, and driving permanent corrective action across the equipment lifecycle.
Experience taking equipment vendors through failure investigation.

Soft skills

Stakeholder Management; Requires coordination with internal teams, OEMs, vendors, consultants, contractors, customers, and management to achieve operational objectives.
Critical Thinking; Needed during FMEA assessments, root cause investigations, risk evaluations, and equipment lifecycle decisions.
Decision Making; Prioritize risks, maintenance activities, equipment replacements, and mitigation strategies based on data and business impact.

Language

English and Mandarin

Nice to have

International Organization for Standardization (ISO) 50001 energy management.
Semiconductor, a commissioning company, or another critical infrastructure industry.
SCEM, GMAP, CDCS or a similar professional certification.
Previous team leadership.

Why DayOne

Most regional engineering roles inherit a standards manual and enforce it. This one writes it, at regional and global level.

You would work across countries and campuses alongside site operations and Mission Critical Response teams, with visibility across the estate rather than responsibility for one building. It is a technical expertise role, built so you keep contributing technically instead of moving away from the work.

GERA is new, and we would rather say so. You would join during a transformation and scaling phase, as the function is built out across new markets.

DayOne is for people who want to build things that don't come with instructions.

Make your mark from DayOne.

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.

Senior Manager, Reliability (GERA)