Design fusion-plant piping and piping-system R&D, including layouts, materials, stress analysis and 3D CAD. Requires relevant plant or piping experience, ASME/JIS knowledge and intermediate English.
About this role
The Vacuum Engineer develops vacuum equipment and systems used in fusion plants. The scope includes vacuum pumps, vacuum exhaust systems, vacuum insulation, hydrogen isotope separation and storage equipment, tritium abatement equipment, and measurement instruments. The role advances new equipment from specification definition through development, prototyping, evaluation, and productization, while also helping establish plant vacuum systems that include existing equipment.
The engineer works to improve the performance and reliability of vacuum equipment and systems under the environmental conditions specific to fusion plants and to raise their technology readiness level. Responsibilities include preparing technical documents such as specifications in Japanese or English, developing and evaluating vacuum equipment, conducting performance evaluations and experiments with development and evaluation equipment, selecting equipment, and defining specifications.
The role leads discussions and technical coordination with customers and external suppliers to advance equipment development and manufacturing. It also supports customer projects by providing engineering assistance and delivering equipment or systems. Collaboration with specialists from different fields and suppliers is part of establishing fusion-equipment technology.
Required experience includes developing or operating vacuum equipment, systems, or instruments; preparing technical documents in both Japanese and English; and negotiating or technically coordinating with customers and external suppliers. Intermediate English is required. Experience using 3D modeling and creating drawings is welcome. Experience developing equipment in fusion, nuclear, space, energy, or semiconductor fields is also welcome, as is experience in technical discussions in English. Advanced English is welcome.
The standard working hours are 9:00 to 18:00 with a one-hour break. Flextime may apply depending on work requirements. The primary workplace is in Heiwajima, Ota-ku, Tokyo, with possible work at the Tokyo Satellite Office in Marunouchi, Chiyoda-ku, from June 2026. Remote work may be discussed for people living within commuting distance. Domestic or international transfers may be possible. The position is advertised as full-time employment, although hiring as a contract employee may also be possible. Annual holidays are stated as 120 or more, with 125 in 2025 and 126 in 2026. Benefits include social insurance, other welfare benefits, salary increases, and special paid leave granted at joining.
This is an AI-generated summary of the employer's original posting — details can be incomplete, out of date or simply wrong. Always confirm everything on the official posting before applying.
Similar jobs
Manage fusion equipment and system projects from planning through handover, coordinating schedules, costs, resources, risks, teams, vendors, customers, installation, and testing.
Design gas, fluid, and thermal processes for fusion equipment from concept to detailed design, prepare PFDs/P&IDs, support commissioning and testing, and optimize processes for future plant deployment.
Manage deployment, operation, and maintenance of facilities in large data centers.
Design electrical hardware for medical equipment, including analog, digital and power-electronics circuits, FPGA work, testing and verification through product development and launch.
Develop and validate mobile, IoT, and broadband-router devices or Android/iOS service apps, while handling testing, project coordination, and hardware quality assurance.