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Job ID : 1618949 Date Updated : October 22nd, 2026

Product Engineer

Hiring Company Renewable Energy company
Location Tokyo - 23 Wards
Job Type Permanent Full-time
Salary 5 million yen ~ Negotiable, based on experience

Job Description

1. Product Management & Portfolio Strategy (40%) ? To provide support handling of the existing and future CSI product portfolio and its life cycle from strategic planning to tactical activities, including creating, maintaining and updating product roadmaps. ? Support regional product management activities, specific to the product of focus, to build and leverage unified collaterals and enable sales proliferation for the region. ? Research, analyze and draft market requirements for existing and new products by communicating with customers and sales teams, by reading other information sources and transferring these requirements into product and roadmap proposals. Present proposals to internal stakeholders to gain approval. ? Work with the marketing team to launch and communicate new products and their features and measure the introduction and sales success of the existing and new products.
2. Technical Support & Product Expertise (35%)
Communicate and train internal teams in regards to product details and specifications,
product advantages, product applications and product benchmark compared to
competitors. ? Follow codes and certifications as they develop; analyze their impact on the market and specific products; make recommendations to management on how to leverage these developments to CSI’s benefit. ? Support headquarter’s personnel with local certificates and technical requirements for
product development purposes. ? Define, clarify and optimize technical terms within the contract negotiation in
alignment with sales.
3. Sales & Marketing Support (10%) ? Prepare content and materials for customer visits with sales managers to conduct
product presentations, customer training sessions, webinars and customer events. ? Provide and validate content for marketing collateral material such as datasheets, technical brochures, white papers and others.
4. Project Coordination (10%) ? Project manage fulfillment of CSI requirements and related collaterals.
5. Other Responsibilities (5%) ? Perform other related duties as assigned by management.

Employee Benefits:
Social Insurance (Health Insurance, Employees’ Pension, Employment Insurance, Workers’ Compensation Insurance)
Paid Annual Leave
Commuting Allowance
Periodic Health Checkups

General Requirements

Minimum Experience Level Over 3 years
Career Level Mid Career
Minimum English Level Business Level
Minimum Japanese Level Business Level
Minimum Education Level Bachelor's Degree
Visa Status Permission to work in Japan required

Required Skills

Education/Certifications: ? Bachelor’s degree in engineering; a graduate degree is strongly preferred. ? Languages: Japanese (native) or Japanses (Business Leveland) with English (business level).? Advanced knowledge of the daily software operation (Word, PowerPoint, Excel, teams Outlook).
Professional Qualifications: ? Understand relationship of product, project, and business. Expereinced with on-site commissioning of new project is a plus. ? Excellent technical aptitude and ability to quickly learn detailed information about the existing product portfolio and to communicate and answer technical and product related questions and topics. ? Understanding Single-Line Diagrams. Capable of performing project simulation using tools such as PVSyst (or equivalent) is a plus. ? Minimum 2+ years’ experience in product management, in the energy sector or within the PV industry. Experience in PV Power Electronics, String Inverter technology and/or Energy Storage is must. Additional experience in PV project or PV system design is a plus. ? Understand local requirements and utility companies and standards that affect the product. Experience with JET certification, JC-Star for Power Electronics products is a strong plus.
Experience with interacting with sales and business development teams and B2B sales channels, and working experience in direct sales to commercial and industry business is a plus. ? Understanding and application of financial product calculation ? product cost and product sales price definition, analysis and recommendation. ? Articulate with strong writing and presentation skills in person or with remote tools. ? Ability / Willingness to travel.
*Approximately 20% of the role involves business travel (Overseas: 1?2 times per year; Domestic: approximately 70% day trips and 30% overnight trips)

Job Location

  • Tokyo - 23 Wards

Work Conditions

Job Type Permanent Full-time
Salary 5 million yen ~ Negotiable, based on experience
Industry Other

Job Category