Time Frequency System Engineer

Job Overview

1. 1This position is responsible for the design and development of high-stability timekeeping and frequency systems for satellite-hosted positioning payloads.
2. 2Through technical evaluation and validation of procured atomic clocks, development of timekeeping control systems, and design of synchronization architectures between the satellite and ground segment, your work will underpin positioning accuracy delivered by LEO-PNT and LNSS.

Specific Responsibilities

1. 1Design, develop, and verify performance of satellite-hosted timekeeping control systems.
2. 2Technically evaluate and support selection of highly stable oscillators such as atomic clocks; conduct technical coordination with manufacturers and procurement agents.
3. 3Design time and frequency comparison methods for inter-satellite and satellite-ground time synchronization architectures.
4. 4Design and evaluate phase-locked loop circuits and frequency distribution circuits.
5. 5Consideration and development of timing protocols for ground and space time synchronisation, such as NTP, White Rabbit and others.
6. 6Analyze and simulate timekeeping system performance, including frequency stability, phase noise, and Allan deviation.
7. 7Contribute technically to the overall payload system timing error budget.

Role Opportunities

1. 1Play a central role in timekeeping technology that is the foundation of LEO-PNT and LNSS, among the world's first in the private sector.
2. 2Build expertise in the highly specialized field of spaceborne atomic clocks and high-stability oscillators.
3. 3Lead technical coordination with manufacturers and procurement agents.
4. 4Opportunities to collaborate with government and international partners including JAXA, NASA, and ESA.
5. 5Opportunities to participate in and present at international conferences and to publish research.

応募資格（必須）

• Design, evaluation, or operational experience with highly stable oscillators or atomic clocks (TCXO, OCXO, RAFS, Cs/Rb standards, etc.)
• Experience evaluating and analyzing frequency stability (Allan deviation, phase noise, etc.)
• Experience designing and implementing time synchronization or precision time distribution systems (PTP/GNSS time sync, two-way time transfer, etc.)

歓迎する経験

• Experience developing timekeeping and frequency systems for space-borne equipment
• Experience designing and evaluating phase and frequency locked loop circuits
• Knowledge of space-based time comparison and synchronisation techniques (TWSTFT, GNSS, and others)
• Knowledge of design considerations for the space environment (radiation, thermal cycling, etc.)
• Experience preparing technical documents in English or conducting technical negotiations with external contractors
• Willingness to work in a Japanese-language environment for technical documentation and communication
• Deep understanding of the physical behavior of time and frequency, with the ability to trace design choices back to system-level accuracy requirements
• Ability to independently lead technical negotiations with manufacturers and procurement agents to ensure specifications are realized
• Ability to connect domain expertise to timing error budget discussions at the payload system level

待遇・福利厚生

• インフルエンザ予防接種
• 休暇制度
• 採用会食費用補助
• 自動販売機補助

求めるスキル・経験