Assistant Site Manager, Mechanical

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.

Position Overview
The Assistant Site Manager (Mechanical) oversees the comprehensive lifecycle of construction projects, ensuring efficient project planning, execution, and handover. This role requires expertise in managing mechanical systems, coordinating with site teams and contractors, and maintaining effective communication with all stakeholders to meet project objectives.

Responsibilities
Project Management & Leadership

• Oversee the entire Mechanical construction lifecycle, including planning, execution, and handover phases.
• Coordinate with site and contractor teams to ensure timely completion of Mechanical project milestones.
• Identify and mitigate project risks, ensuring clear communication of updates on schedules, budgets, and technical issues to stakeholders.

Contract & Financial Management

• Lead M&E-specific contract negotiations and oversee amendments with architects, consultants, and subcontractors.
• Evaluate Mechanical construction methods for cost-effectiveness, monitor budget adherence, and produce regular progress and financial reports.

Stakeholder & Contractor Relations

• Manage relationships with key stakeholders, including contractors, consultants, and relevant authorities, ensuring adherence to project standards.
• Provide support to local teams on customer discussions regarding project progress and any technical challenges.

Design & Systems Coordination

• Collaborate closely with external consultants to ensure effective design and construction of Mechanical systems within data centers, covering HVAC, electrical distribution, fire protection, and other critical infrastructure.
• Ensure the successful handover of Mechanical systems to operational teams, addressing any outstanding issues or deficiencies.

Safety & Compliance

• Lead safety initiatives on-site, ensuring full compliance with regulations and industry standards.
• Oversee adherence to all relevant permitting and government authority requirements for projects.

Continuous Improvement & Quality Assurance

• Promote a culture of continuous improvement and collaboration within the project team.
• Implement advanced project management and quality control techniques to optimize project outcomes.

Qualifications

• 10+ years of experience in construction project management within the Mechanical or engineering field; additional experience in data center projects is highly preferred.
• Proven experience in delivering large-scale projects, with strong knowledge of HVAC, power systems, and fire protection.
• Expertise in Mechanical systems, local authority approval processes, and testing and commissioning of critical infrastructure in data centers, including Integrated Systems Testing (IST).
• Solid understanding of CAPEX planning, cost estimation, and total cost of ownership (TCO) in data centers.
• Engineering degree in Mechanical, Electrical, or related field.
• Proficiency in project management tools, MS Project, and MS Office, with excellent organizational and time-management skills.
• Demonstrates initiative, collaboration, and resilience under pressure.
• Fluent in English (written and spoken); additional languages in the APAC region are advantageous.

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.