Senior Photonic Manufacturing Engineer – Nanofiber Cavity Systems

Why join us Build the manufacturing systems behind a core photonic technology for next-generation quantum communication. In this high-ownership role, you will turn delicate nanofiber cavity fabrication into a robust, repeatable process by combining precision mechanics, automation, sensing, and optical-device know-how. Role overview You will lead the development of smart manufacturing processes and custom equipment for nanofiber cavities. The work spans process design, mechatronic system development, stage control, machine vision, sensing, assembly, device evaluation, and collaboration with external equipment and component suppliers. Your focus will be shaped by your expertise, project priorities, and interests. What you will own - Develop robust, repeatable fabrication and assembly processes for nanofiber cavity devices. - Design and integrate custom equipment, fixtures, motion systems, sensing, and control software. - Automate critical process steps and establish measurement methods, process controls, and acceptance criteria. - Diagnose technical failures across optical, mechanical, electrical, material, and software interfaces. - Move prototypes from proof of concept toward reliable operation and scalable manufacturing. - Manage technical collaboration with equipment manufacturers, component suppliers, and other external partners. - Generate inventions and technical results suitable for patent applications or publication, subject to company policy. Required qualifications - At least four years of relevant engineering or product-development experience in precision equipment, photonic devices, semiconductor or microfabrication equipment, scientific instrumentation, or a related field. - Hands-on experience designing, building, integrating, and troubleshooting complex experimental or manufacturing systems. - Strong capability in at least two of the following: precision mechanics; motion or stage control; machine vision or image processing; sensors and instrumentation; electronics; complex optical systems; automation software; or process development. - Demonstrated ability to independently deliver a working solution from an incomplete or open-ended specification. - Strong documentation, root-cause analysis, and cross-functional collaboration skills. - Professional working proficiency in English. Preferred qualifications - Experience with advanced optical-fiber devices, high-finesse optical cavities, FBGs, or other precision photonic components. - Experience with precision motion control, optical alignment, precision measurement, or closed-loop control. - Experience collaborating with manufacturers on custom equipment, components, or prototype jigs. - Experience with ultrahigh-vacuum systems or cleanroom work. - Knowledge of quantum technologies is welcome but not required; a strong interest in quantum communication is essential. What success looks like You deliver equipment and processes that improve fabrication robustness, throughput, yield, and traceability while enabling faster device-development cycles. Language English: Professional working proficiency. Japanese: Not required. Compensation Competitive salary Benefits Comprehensive Japanese Social Insurance Coverage - Health insurance/Employees’ pension insurance/ Employment insurance/ Workers’ compensation insurance Work Schedule and Leave Benefits - Five-day workweek (weekends off)/Paid annual leave/Year-end and New Year holidays/ Summer vacation - Other leave programs in accordance with applicable Japanese laws and regulations Relevant keywords Photonics manufacturing; nanofiber cavities; optical fiber; fiber Bragg grating (FBG); mechatronics; precision automation; motion control; machine vision; process development; optical alignment; scientific instrumentation; ultrahigh vacuum; cleanroom