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Sr. Onboard Software Engineer

Loft
San Francisco, California
Full Time
Posted November 18, 2025
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Job Description

The Senior Onboard Software Engineer will develop and maintain on-orbit software that monitors and controls satellite systems, including flight environments, external interfaces, and high-level vehicle functions, supporting the deployment and operation of space missions.

Key Responsibilities

  • Develop and maintain on-orbit onboard software for space systems.
  • Monitor and control major space program elements, including flight products and computational environments.
  • Interface with external equipment such as imagers, RF, ISL, and spacecraft bus systems.
  • Implement and support high-level vehicle services like file transfer, time synchronization, automation, scheduling, attitude control, and navigation.
  • Ensure onboard software architecture supports reuse across multiple satellite programs.

Requirements

  • Proven experience in developing onboard software for space systems or related aerospace applications.
  • Strong programming skills in relevant languages such as C, C++, or Python, with the ability to develop, test, and maintain onboard software components.
  • Experience with monitoring and control of space program elements, including flight products computational environments, physical and virtual processors.
  • Ability to interface with external equipment such as imagers, RF systems, ISL, and spacecraft bus systems.
  • Familiarity with high-level vehicle services and functions including file transfer, time synchronization, automation, scheduling, attitude control, and navigation.
  • Demonstrated understanding of onboard architecture and the reuse of services across satellite programs.
  • Strong communication skills in English, capable of conveying complex ideas clearly and effectively within an international team.
  • Problem-solving skills with the ability to address and resolve technical challenges related to onboard software systems.

Benefits & Perks

Autonomy and ownership to solve significant challenges
Supportive and close-knit team environment
Opportunity to work on on-orbit software powering space missions
International work environment with offices in San Francisco, CA, Golden, CO, and Toulouse, France
Participation in a fast, reliable, and flexible mission deployment process
Involvement in a company with proven flight heritage and technologies
Potential to contribute to a variety of missions including Earth observation, IoT connectivity, in-orbit demonstrations, and national security missions

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