Tokyo Trinasolar

Position Summary

The Project Delivery and Service Manager - Japan is responsible for overseeing the execution

and after-sales service of utility-scale Battery Energy Storage System (BESS) projects in Japan.

This includes managing end-to-end project delivery, ensuring compliance with technical and

safety standards, coordinating with internal and external stakeholders, and leading service

support during the operational phase.

Key Responsibilities

Project Delivery


• Lead the execution of utility-scale BESS projects from end-to-end.


• Serve as the main interface between clients, EPCs, suppliers, and internal departments (engineering, procurement, logistics).


• Monitor project milestones, manage schedules, budgets, quality, and risk mitigation plans.


• Ensure timely completion of commissioning, Site Acceptance Tests (SAT), and handover to O&M.


• Coordinate site activities including HSE compliance, local permitting, inspections, and punch list resolution.


• Manage subcontractors, local service partners, and field technicians.

Service & Support


• Provide technical and commercial support during the operational phase.


• Lead the development and execution of LTSA, including preventive and corrective maintenance strategies.


• Coordinate spare parts logistics, service ticketing, and remote support channels.


• Ensure SLA compliance (e.g. Availability guarantee) and customer satisfaction through high-quality after-sales service.


• Work with global service teams to implement process improvements and root cause analysis for failures.

Pre-Sales Support


• Act as the service-oriented point of contact for clients during the sales and tendering process.


• Provide input to commercial teams on service scope, delivery timelines, warranties, and O&M offerings.


• Participate in customer meetings, RFP/RFQ response preparation and contract negotiations regarding project delivery and service terms.


• Support service documentation review and service proposal development in collaboration with internal teams.

After Sales Service Operations


• Establish and oversee service support processes for preventive and corrective maintenance, warranty claims and spare parts logistics.


• Ensure customer satisfaction through timely service ticket resolution and performance issue response.


• Manage subcontracted service providers and field technicians to ensure SLA adherence and safety compliance.


• Serve as the voice of the customer for post-sales feedback and technical issues.


• Work with internal teams to suggest design or process improvements based on project learnings and customer feedback.


• Contribute to regional knowledge base and process optimization initiatives.


• Oversee training and development of local teams and third-party service providers.

Qualifications & Experience


• Bachelor's degree in Electrical Engineering, Energy Systems, or related technical discipline.


• 5+ years' experience in project management or service delivery, ideally in energy storage, renewable energy, or power systems.


• Proven track record delivering utility-scale renewable energy projects in Japan.


• Strong knowledge of BESS components (PCS, BMS, EMS, batteries), commissioning, and operations.


• Understanding of Japanese grid codes, regulatory compliance, and local construction norms.


• Native-level Japanese and business-level English required to liaise with Japanese and internal counterparties. Fluency in Chinese is highly desirable to liaise with Chinese counterparties.


• Strong leadership and stakeholder management skills.


• Excellent problem-solving and organizational abilities.


• PMP or equivalent project management certification is a plus.



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