Electrical Design Engineer (Substation and Power Systems)

This electrical design engineer position covers the design and planning of electrical facilities for fusion-related equipment and test facilities. Work includes substations, DC facilities for plasma heating power supplies, generation facilities, and electrical load systems.

Responsibilities include conceptual design of the overall electrical system, defining interfaces between facilities, estimating steady-state and transient power flows, reviewing equipment configurations and capacities, preparing conceptual single-line diagrams, and considering the overall EPC plan. The role also investigates electrical system configurations for fusion facilities and accelerators with large active and reactive power fluctuations, then reflects the findings in project planning and optimization. Relevant equipment may include motor generators, static var compensators, flywheels, and energy-storage systems.

Additional duties include preparing electrical equipment specifications, soliciting inquiries from vendors, evaluating and selecting vendors, negotiating on technical matters, reviewing technical documents, managing contractors, and managing projects during electrical equipment EPC execution. The position also prepares and compiles submissions for government authorities, including connection study applications and construction plan notifications, and participates in technical discussions.

Required qualifications are practical experience in one or more of the listed duties, a basic understanding of electrical standards and codes, and an understanding of electrical equipment requirements specific to fusion power generation facilities or the ability to proactively learn them. Intermediate English is required for reading and writing technical documents and for actively communicating. Preferred qualifications include English at an intermediate level or above, an electrical chief engineer license, experience preparing drawings with AutoCAD, experience with power-system analysis or electrical-circuit simulation tools such as ETAP or LTspice, and an electrician license.

The posting seeks people who identify issues and act proactively, continue learning in new fields, take responsibility for their own opinions and proposals, and can consider internal and external stakeholders’ views broadly before making and explaining a balanced decision. The work involves collaboration and knowledge sharing with members who have different areas of expertise and participation across project stages from upstream to downstream.

The position is a full-time regular employee role, although contract employment may also be possible. The structured job information lists annual compensation of JPY 7,000,000 to 9,000,000; the posting describes a monthly salary system, with the amount discussed according to experience and subject to company performance and individual evaluation. The primary workplace is the Tokyo office in Heiwajima, Ota-ku, Tokyo. Work at the Tokyo Satellite Office in Marunouchi, Chiyoda-ku may also be possible from June 2026. Remote work is negotiable for someone living within commuting distance, and domestic or overseas transfers may be possible. Working hours are 9:00 to 18:00 with a one-hour break, although flextime may apply depending on business needs. Holidays are Saturdays, Sundays, and public holidays, with at least 120 annual holidays. Benefits include social insurance, other welfare benefits, salary increases, and special paid leave granted upon joining.