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.

The Role
The HR Business Partner will act as a trusted advisor to leaders, aligning people strategy with business priorities while supporting the growth and development of DayOne’s teams in Spain.
This role combines strategic HR partnership with hands-on execution, supporting workforce planning, leadership capability, employee relations and organisational development in a fast-growing environment.





Key Responsibilities
- Partner with business leaders to support organisational growth, workforce planning and team development.
- Act as a trusted advisor to managers on leadership, performance management and employee relations matters.
- Work closely with Talent Acquisition to support hiring plans and onboarding of new employees.
- Support organisational design and capability development as teams scale.
- Champion DayOne’s culture and help build an engaged, high-performing workplace.
- Ensure HR practices comply with Spanish labour law and company policies.
- Support implementation of integral HR programs and initiatives.

What We’re Looking For
- 6-10 years of HR experience in an HR Business Partner or HR Generalist role.
- Strong knowledge of Spanish labour law.
- Experience partnering with business leaders in fast-growing international organisations.
- Strong employee relations and stakeholder ma

📌 HR Business Partner (Madrid)
🏢 DayOne Data Centers
📍 Madrid