Process Engineer (Upstream)

This process engineer role is based in the technical development division and covers the design and research and development of thermal recovery equipment, tritium recovery and abatement systems, clean hydrogen production equipment, and related operation systems for fusion applications.

The engineer designs gas, fluid, and thermal processes for blankets, divertors, tritium management systems, and associated equipment. Responsibilities extend from evaluating elemental technologies through basic and detailed design. The work includes preparing process flow diagrams and piping and instrumentation diagrams (PFDs and P&IDs), setting design conditions, and developing operating scenarios. Safety reviews and compliance with domestic and international regulations and design standards are also included.

The role defines specifications for major equipment such as pumps, valves, heat exchangers, and piping, and involves technical discussions with manufacturers. The engineer launches and commissions test and demonstration facilities, conducts performance evaluations, and verifies the validity of the designs through testing. Process optimization and standardization are performed with future scale-up and commercial plant deployment in mind. The work may also include technical specification coordination with overseas customers and manufacturers, installation and testing support overseas, mainly in Europe and the United States, and presentations at academic conferences.

Applicants must have completed a four-year university or graduate degree in mechanical engineering, materials science, chemical engineering, nuclear engineering, or electrical and electronic engineering. Intermediate English proficiency is required. Advanced English is welcomed. Preferred experience includes several years of overseas assignments or work with overseas vendors, use of industrial analysis tools such as ASPEN, HTRI, or ANSYS, knowledge related to nuclear power and radiation use, and experience with capital investment for plant rationalization or capacity expansion. The posting also welcomes applicants holding qualifications including Radiation Protection Supervisor, Class A Hazardous Materials Engineer, Class A High-Pressure Gas Safety Supervisor, Energy Manager, Boiler Technician, Chief Electrical Engineer, or Pollution Control Manager.

The position is full-time with an indefinite contract period. The annual salary range in the JobPosting data is JPY 5.4 million to JPY 12 million. Compensation is monthly, is discussed according to experience, and may vary based on company performance and individual evaluation. The listed work locations are the Tokyo headquarters office in Ota, Tokyo, and the Kyoto Research Center in Kuse-gun, Kyoto. For Tokyo-based work, the Tokyo satellite office in Marunouchi, Chiyoda, may also be available from June 2026. Remote work may be discussed for people living within commuting distance. Domestic and international transfers may be possible.

Working hours are 9:00 to 18:00 with a one-hour break; a flextime system 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, a raise, and special paid leave granted upon joining. Health insurance, employees' pension insurance, employment insurance, and workers' accident compensation insurance are provided. The building is entirely smoke-free indoors, with a smoking room in the building. Hiring may also be offered as a contract employee. The posting asks applicants not to reapply for the same position within six months of a previous application.