Commissioning Engineer – Junior / Mid-Level / Senior / ManagerUK, London (Europe focused) A leading global energy technology company is expanding its international Commissioning team and is looking to hire Commissioning professionals across Junior, Mid-Level, Senior and Manager levels. The business is at the forefront of the global energy transition, delivering large-scale battery energy storage and energy technology solutions across international markets. As the organisation continues to grow, this is an opportunity to join a technically ambitious company working on some of the largest and most advanced energy projects globally. Depending on your level of experience, you will support or lead the commissioning of large-scale Battery Energy Storage Systems (BESS) and associated energy technology. The role is highly international and hands-on, working closely with engineering, project management, construction, quality and operations teams to ensure systems are installed, tested, commissioned and handed over safely and effectively. Global travel is a core part of the position. Candidates must be genuinely comfortable and happy with significant international travel and working on project sites globally. Junior Commissioning EngineerResponsibilities Support commissioning activities for BESS and associated energy systems.Assist with pre-commissioning checks, inspections, testing and system validation.Support fault finding and troubleshooting of technical issues.Assist senior engineers with commissioning documentation and reports.Work alongside engineering and site teams to ensure equipment is correctly installed and prepared for commissioning.Follow commissioning procedures, HSE requirements and technical standards.Develop technical knowledge across BESS, electrical systems, controls and associated technologies.Support Site Acceptance Testing (SAT) and system handover activities.Work alongside experienced commissioning engineers to develop practical technical expertise.Travel internationally to support project commissioning activities. Requirements Engineering degree, HNC/HND or equivalent qualification.Some exposure to electrical systems, commissioning, automation, controls or energy technology.Internship, graduate or early-career engineering experience is welcomed.Strong technical curiosity and willingness to learn.Strong problem-solving skills.Fluent Chinese – C1 level or above (NON-NEGOTIABLE).Professional working proficiency in English.Genuine willingness and ability to travel globally on a regular basis. Mid-Level Commissioning EngineerResponsibilities Lead commissioning activities for assigned systems and project areas.Carry out testing, configuration, troubleshooting and validation of BESS and associated electrical systems.Identify and resolve technical issues during commissioning.Coordinate with engineering, construction and project teams to ensure commissioning activities remain on schedule.Review technical documentation, drawings, test procedures and commissioning plans.Support FAT, SAT and site acceptance activities.Produce commissioning reports and maintain accurate technical documentation.Liaise with customers, contractors and suppliers during commissioning.Support and mentor junior engineers.Contribute to the development of commissioning procedures and best practice.Travel extensively to project sites globally. Requirements Typically 2–5+ years' relevant engineering or commissioning experience.Experience with electrical systems, commissioning, testing or industrial equipment.Experience troubleshooting technical issues independently.Experience working on complex engineering projects or at customer/project sites.Fluent Chinese – C1 level or above (NON-NEGOTIABLE).Professional working proficiency in English.Must be genuinely happy with extensive global travel and spending significant time internationally on project sites. Senior Commissioning EngineerResponsibilities Take technical ownership of commissioning activities across major BESS projects.Plan and execute commissioning strategies, testing procedures and site acceptance activities.Lead troubleshooting and root-cause analysis of complex electrical, control and system-level issues.Coordinate commissioning activities across multiple engineering disciplines.Work closely with project management, engineering, construction and customers to ensure successful project delivery.Review and approve commissioning documentation, test plans and procedures.Lead FAT, SAT, energisation, testing and final system handover activities.Provide technical guidance and mentorship to junior and mid-level engineers.Manage commissioning risks, technical issues and project priorities.Represent the commissioning function in meetings with customers, contractors and other stakeholders.Contribute to continuous improvement of commissioning processes and standards.Take a leading role in international project deployments and commissioning activities. Requirements Typically 5–8+ years' relevant experience in commissioning or a closely related technical discipline.Strong experience leading commissioning activities and troubleshooting complex systems.Experience within BESS, renewable energy, power electronics, industrial automation or a similar environment is highly desirable.Demonstrable ability to lead technical activities and mentor less experienced engineers.Strong communication and stakeholder management skills.Fluent Chinese – C1 level or above (NON-NEGOTIABLE).Professional working proficiency in English.High mobility and a genuine willingness to travel globally extensively. Commissioning ManagerResponsibilities Take overall responsibility for commissioning activities across projects or a portfolio of projects.Develop commissioning strategies, plans, schedules and resource requirements.Lead and manage commissioning engineers and site teams.Coordinate commissioning activities with project management, engineering, construction, quality and operations.Manage commissioning budgets, timelines, resources and technical risks.Act as the senior technical point of contact for customers, EPC partners, contractors and other stakeholders.Oversee FAT, SAT, energisation, testing and final handover activities.Ensure commissioning is completed safely, efficiently and in accordance with project requirements.Resolve complex technical and commercial issues affecting commissioning delivery.Establish and improve commissioning procedures, standards and best practices.Provide technical leadership, coaching and development to the wider commissioning team.Support the wider business with commissioning strategy and project planning.Lead the international deployment of commissioning teams across global projects. Requirements Typically 8+ years' relevant experience, with significant commissioning and project leadership experience.Proven experience managing commissioning teams and complex technical projects.Strong understanding of electrical systems, controls, BESS or related energy technologies.Experience managing customers, EPCs, contractors and multidisciplinary project teams.Strong leadership, planning and problem-solving skills.Fluent Chinese – C1 level or above (NON-NEGOTIABLE).Professional working proficiency in English.Must be highly mobile and genuinely happy to travel globally on a regular and potentially extensive basis. Non-Negotiable Requirements – All LevelsRegardless of seniority, candidates must meet the following requirements: Chinese language proficiency – C1 level or above.Fluent English.Genuine willingness and ability to travel globally.Comfortable working for extended periods on international project sites.Comfortable working in a highly international, fast-paced environment.Strong technical and problem-solving capabilities.Willingness to work flexibly around project requirements and commissioning schedules. This is an opportunity to join a global energy technology business at the forefront of the rapidly growing battery energy storage market. You will work on major international projects, gain exposure to cutting-edge energy technology and collaborate with engineering and project teams across multiple countries. For junior engineers, the role provides an excellent platform to develop into a specialist within BESS commissioning. For experienced engineers and managers, it offers the opportunity to take ownership of major international projects, lead technical teams and play a significant role in the company's continued global expansion. If you're interested, please apply below:

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