Spacecraft Descent Guidance, Navigation, and Control System Engineer

ispace is looking for Spacecraft Descent Guidance, Navigation, and Control System Engineer to join our growing team in Tokyo. You will lead the end-to-end development of the lunar lander’s landing system—including design, verification, and operations—from the perspective of the Guidance, Navigation, and Control (GNC) subsystem. Define requirements for the GNC subsystem, including sensors, software and other hardware components, and manage technical coordination and interface alignment with other subsystems. Manage the integrity and performance of GNC algorithms in the FSW development and deliverables. Support mission operations and preparation activities. 月着陸船の着陸系誘導航法制御サブシステムの観点から、着陸系GNCサブシステム全体開発（設計、検証、運用）を担当する。 センサー、ソフトウェアおよびその他のハードウェアコンポーネントを含む着陸系誘導航法制御サブシステムの要求定義、管理および各サブシステムとの技術調整、インターフェース調整を担当する。 各サブシステムとの技術調整、インターフェース調整を担当する。FSW開発および成果物におけるGNCアルゴリズムの完全性と性能を管理する。ミッション運用および準備活動を支援する。 Ideal candidate profile:  The ideal candidate has over 5 years of experience in GNC subsystem development, including algorithm design, sensor modelling, and performance evaluation, as well as spacecraft systems engineering with failure mode analysis. The candidate is proficient in C/C++, Python, Git, and understands modern software development practices. The candidate has hands‑on experience with closed‑loop test frameworks (MIL/SIL/PIL/HIL), developing models and interfaces for IMUs, star trackers, LiDARs, cameras, and propulsion systems, along with direct involvement in system‑level spacecraft testing (SCLT, DOLT, DCLT). Proven capability in vision‑based navigation system development is essential. The candidate is proactive, collaborative, communicates effectively, and operates confidently in business‑level English.