Spacecraft Descent Guidance, Navigation, and Control Software Engineer

Requirements

• ・5+ years of experience in Attitude and Orbit Control Subsystems (AOCS) or Guidance, Navigation, and Control (GNC) subsystems engineering
• ・Experience of 6DOF Simulations (state propagation, dynamics and hardware modelling and closed-loop integration) for spacecrafts
• ・Experience in developing trajectory optimization and onboard guidance algorithms (indirect and direct methods) for spacecrafts
• ・Experience in developing attitude control algorithms (PID control, thruster commanding, modulation and allocation, etc.) for spacecrafts
• ・Experience in developing navigation algorithms (extended Kalman filter, orbital attitude and position calculations etc.) for spacecraft
• ・Experience in C/C++, Python, Git, Clean Code, Unit Testing Frameworks
• ・Enthusiastic attitude and good team player
• ・Excellent communication skills
• ・Business level English
• ・5年以上のAOCS/GNCサブシステム開発の経験を有すること
• ・宇宙機に関する6自由度シミュレーション（状態量伝搬、ダイナミクス、ハードうえぁモデリングおよび閉ループ統合）の経験を有すること
• ・宇宙機に関する経路最適化およびオンボード誘導アルゴリズム（間接法および直接法）開発の経験を有すること
• ・宇宙機に関する航法アルゴリズム（拡張カルマンフィルタ、姿勢および軌道計算等）開発の経験を有すること
• ・宇宙機に関する姿勢制御アルゴリズム（PID制御、スラスターコマンド、モジュレーションおよびスラスタ分配等）開発の経験を有すること
• ・C/C++, Python, Git、クリーンコード、ユニットテストフレームワークの経験を有すること

Additional Information

ispace is looking for Spacecraft Descent Guidance, Navigation, and Control Software Engineer to join our growing team in Tokyo. (Japanese follow English) For this role, you will develop the Flight Software (FSW) of the Guidance, Navigation and Control functions for the Entry, Descent and Landing (EDL) phase of a lunar lander. Contribute to the development of the lunar lander simulator and testing framework as well as design, implement and validate GNC algorithms in coordination with Flight Software and GNC engineers. You will also perform design analysis related to landing GNC and detailed design of GNC algorithms based on higher-level requirement and support flight software integration activities and mission operations and preparation activities. Candidate profile : If you are an experienced AOCS/GNC engineer with strong technical depth in spacecraft guidance, navigation, and control with 5+ years of hands‑on engineering experience, proven capability in 6DOF simulations, trajectory optimization, and the development of guidance, navigation, and attitude control algorithms. The candidate is proficient in C/C++, Python, Git, and modern software engineering practices, including clean code principles and unit testing. Candidate must excel in cross‑functional teamwork, communicate effectively, demonstrate a proactive and enthusiastic attitude, and operate comfortably in an English‑speaking engineering environment. This candidate can independently develop, analyze, and validate advanced spacecraft control algorithms and contribute meaningfully to mission‑critical GNC system design. 月着陸機の突入・降下・着陸（EDL）段階における誘導・航法・制御（GNC）機能のフライトソフトウェア（FSW）を開発する。 月着陸機シミュレータおよび試験フレームワークの開発に貢献する。 フライトソフトウェアおよびGNCエンジニアと連携し、GNCアルゴリズムの設計、実装、検証を行う。 着陸系GNCサブシステムに関する設計解析、上位要求に基づくGNC算術処理則の詳細設計を行う。 フライトソフトウェアの統合活動、ミッション運用および準備活動を支援する。

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