Job description
Join Day. One – Shaping the Future of Data Infrastructure Day. One 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 Day. One’s next chapter. Commissioning Manager Finland Join Day. One – Shaping the Future of Data Infrastructure Day.
One 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 Day. One’s next chapter. What you’ll do As a Commissioning Manager you are responsible for planning, coordinating, and executing commissioning activities for new data center projects in Finland.
This role ensures that critical building systems are thoroughly tested, integrated, and handed over to Operations in full compliance with the project design, technical standards, Finnish regulations, and safety requirements. You will work closely with internal engineering teams, contractors, vendors, and operations personnel to ensure reliable, efficient, and high-quality delivery of all MEP and control systems.
Key responsibilities include
Commissioning Planning & Coordination Support ing development of the Commissioning Plan, schedule, and testing protocols. Coordinat ing commissioning activities with Project Management, Construction, Vendors, and Operations, ensuring alignment with project specifications, Uptime/Tier requirements, and Finnish/EU standards.
Assist ing with planning FAT, SAT, functional testing, and Integrated Systems Testing (IST). Technical Execution Identif ying issues, escalat ing deviations, and support ing root-cause analysis and corrective actions. Maintain ing accurate commissioning logs, punch lists, and test documentation . Execut ing and witness ing commissioning tests across electrical, mechanical, controls, fire safety, and security systems, including: HV/MV/LV distribution, UPS, generators, PDUs, ATS/STS , Chillers, CRAC/CRAH, pumps, cooling towers, hydronic systems.
BMS/EPMS/BAS controls and SOO validation. Fire detection and suppression systems. Access control, CCTV, ICT/structured cabling readiness. Quality, Compliance & Safety Ensur ing commissioning activities comply with Finnish regulatory requirements, SFS/EN standards, and environmental/safety rules. Support ing QA/QC processes to ensure equipment and systems meet design intent.
Adher ing strictly to Lockout/Tagout (LOTO) and safe energization practices, collaborating with HSE and project teams to maintain a safe, zero-harm environment. Documentation & Handover Prepar ing and maintain ing commissioning documentation including test forms, reports, red-line drawings, and O&M inputs; assist in assembling the final Commissioning Turnover Package.
Participat ing in formal handover meetings with Operations and Customers and support training activities to ensure Operations teams understand system functionality. What We’re Looking For Bachelor’s Degree in Electrical or Mechanical Engineering , Building Services, or equivalent Multiple years of experience and strong understanding of commissioning, installation, or operations of MEP systems ideally in data centers , energy, industrial, or mission-critical facilities.
Experience with testing and commissioning electrical, mechanical, controls, or fire safety systems. Familiarity with Finnish electrical and safety standards (SFS/EN) Ability to read and interpret SLDs, P&IDs, schematics, and technical drawings. Ability to work independently and manage multiple , competing priorities in a face-paced environment.
Excellent communication and stakeholder management skills . Proactive, solutions -oriented mindset and a collaborative working style. Solid problem-solving skills with a practical, solutions -driven approach. Ability to work on-site at the construction location during key commissioning phases Ability to travel within Finland or Europe as necessary.
Fluency in English Why join Day. One? Be part of a company scaling fast in a booming industry. Work on an international stage with global leaders. Shape your career in a culture that values curiosity, agility, and bold thinking. 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.
Day. One is proud to be an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. For more information about us, please visit Data Center Company Built For Hyperscale . Day. One 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.