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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 . 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 Experience: Strong experience in commissioning and MEP engineering, with dedicated experience working on data centres, mission-critical, or large infrastructure projects . Education: Degree or alternative qualification in Mechanical, Electrical, or Building Services Engineering (or equivalent discipline) . Technical Expertise: Proven experience handling the integrated commissioning of critical power and cooling systems . Process Knowledge: Solid understanding of commissioning processes, documentation, and regulatory compliance . Testing Standards: Practical experience with FAT, SAT, and IST testing for data centre systems