Senior Commissioning Engineer (Data Centre)

About Nscale 

At Nscale, we are building the infrastructure for Europe's AI revolution. Nscale are developing cutting-edge sovereign generative AI solutions, powered by a new generation of high-performance, sustainable data centres and GPUs built specifically for AI workloads. The growth of artificial intelligence is driving unprecedented global demand for compute and GPU infrastructure. Nscale is positioned at the heart of this transformation, building the platforms that will enable the next decade of innovation.

Nscale are working closely with the world's most advanced AI technology providers, integrating next-gen compute hardware and GPU clusters in both partner and Nscale built facilities. This is an opportunity to join Nscale's journey, play a key role in delivering transformative AI infrastructure, and help shape a company designed to scale rapidly across Europe and beyond.

Commissioning Engineer

Do note that the role will be based in Gumi, South Korea

Role Overview

The Commissioning Engineer will coordinate and execute commissioning activities for Nscale's hyperscale data centre projects across Europe. You will be responsible for driving all aspects of system testing, verification, and handover, ensuring that facilities meet performance, safety, and operational readiness standards.

This owner-side engineering role requires strong technical knowledge across mechanical, electrical, and controls systems, and the ability to work with multiple stakeholders throughout the commissioning process. Working closely with our Commissioning Agent/Technical Services Partner, Project Managers, MEP teams, and contractors, you will ensure integrated testing and documentation is completed to the highest standards before project completion.

Key Responsibilities

• Support and execute phases of commissioning, delivering hands-on support through execution, testing, and handover.

• Contribute to the development and management of project-specific commissioning plans, schedules, and test procedures.

• Coordinate commissioning activities across all disciplines-mechanical, electrical, controls, and life-safety systems.

• Ensure commissioning scope aligns with project design intent, operational requirements, and Nscale standards.

• Oversee and perform testing, verification, and documentation of system performance, including FAT, SAT, and IST stages.

• Review and validate commissioning reports, punch lists, and closeout documentation.

• Collaborate with contractors, consultants, and operations teams to ensure readiness for energisation and integration testing.

• Manage the technical interface between construction, QA/QC, and operations during the transition to steady-state operations.

• Identify and resolve technical issues impacting system functionality, reliability, or safety.

• Support lessons-learned reviews and the continuous improvement of Nscale's commissioning standards and procedures.

Qualifications

• Bachelor Degree in Mechanical/Electrical/Building Services Engineering or equivalent
• At least 7 years of relevant Commissioning experience in Data Centres
• Strong experience in Commissioning and MEP engineering with experience in Data Centres, mission-critical or large scale infrastructure projects
• Prior experience in handling Commissioning from CxL0 to CxL6 will be advantageous
• Proven experience handling the integrated commissioning of critical power and cooling systems
• Solid understanding of commissioning processes, documentation, and regulatory compliance
• Practical experience with FAT, SAT, and IST testing for data centre systems
• Excellent coordination, communication, and problem-solving skills
• Ability to work collaboratively across engineering disciplines in high-pressure, fast-paced environments.
• Fluent in English; additional APAC languages are advantageous as there will be a need to liaise with global and APAC team
• Comfortable to be located in Gumi

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