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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