Flight Software Engineer (Cislunar projects)
Ispace Technologies
Software Engineering
Englewood, CO, USA
Posted on Nov 5, 2025
At ispace U.S., we’re not just going to the Moon—we’re redefining how we get there. Our missions push the boundaries of human and robotic exploration, driven by our belief: “Expand our Planet. Expand our Future.” By providing cost-effective lunar transportation, we are pioneering a future where space is within reach for scientific discovery, commercial ventures, and sustainable exploration.
With locations in Japan, Luxembourg, and the United States, ispace is rapidly growing and leading the way in lunar exploration and development. Our U.S. branch is based in Englewood, Colorado, and focuses on high-capacity payload lunar landers designed to support future lunar missions. Our team is made up of innovators, problem-solvers, and visionaries committed to making space more accessible and fostering the next generation of space exploration.
Let’s go to the Moon together! Our team is growing, and we are actively seeking talented individuals who share our passion for space.
ispace US is seeking a talented Flight Software Engineer to join our mission of expanding humanity's presence beyond Earth. As a key member of our engineering team, you will develop and maintain the critical software systems that power our lunar landers, enabling safe and reliable operations in one of the most challenging environments imaginable.
Key Responsibilities
- Design, develop, and implement spacecraft embedded C/C++ flight-software, ground test software, and simulation software.
- Develop and integrate software/hardware components into a fully functional system
- Develop, select, tailor, and deploy software processes, tools and metrics
- Perform unit and system test design and implementation using simulations, test and flight system hardware
- Establishing software development design philosophy, practices, and coding standards.
- Leading code reviews.
- Design and implement fault detection and mitigation in software
- Develop software verification plans and test procedures for hardware-in-the-loop test campaigns
Basic Qualifications
- Bachelor’s degree in computer science or related technical field. We will consider a combination of experience and education.
- 5+ years relevant experience in software development
- Proven experience with software development for embedded systems
- Experience with software development processes including source control, bug tracking, and design documentation
- Competent in the Linux/Unix environment with experience scripting and automating complex procedures
- Familiarity with software architecture for space applications
- Familiarity with DevOps tools such as AWS Gov Cloud, Github, GitLab, JIRA, and/or Confluence
What Makes You Stand Out
- Demonstrated professional experience in launch vehicle and/or spacecraft software systems
- Highly proficient in C/C++ (C99/C++ 11+)
- Experience with NASA’s cFS a plus
- Ability to solve complex problems in a fast-paced collaborative interdisciplinary team environment
- Understanding of GNC, Simulation, and Linux
- Experience with Ground/Test software
- Experience with a large, shared codebase and continuous integration and deployment workflows and tooling like GitLab CI and Docker
- Software quality practices associated with organizations like NASA, FAA, etc.
- Strong skills in debugging, performance optimization and unit testing
- Capable of working both independently and in a team environment
- Strong coordination, organization and communication abilities
#LI-LH1
At ispace, we believe that diverse perspectives drive innovation. We welcome applicants from all backgrounds and experiences, even if you don’t meet every listed requirement. If you’re passionate about our mission and think you can contribute, we encourage you to apply. Your unique skills and experiences may be exactly what we need to grow and succeed together.
To conform to U.S. Government space technology export regulations, including the International Traffic in Arms Regulations (ITAR) you must be a U.S. citizen, lawful permanent resident of the U.S., protected individual as defined by 8 U.S.C. 1324b(a)(3), or eligible to obtain the required authorizations from the U.S. Department of State. Learn more about the ITAR .here.
ispace is an Equal Opportunity Employer; employment with ispace is governed on the basis of merit, competence and qualifications and will not be influenced in any manner by race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability or any other legally protected status.
All applicants who are offered employment with ispace US will be subject to a background investigation. Offers of employment are contingent on the successful completion of a background investigation conducted in accordance with Company policies and all applicable laws.
ispace Technologies, US, Inc. is a drug-free workplace.
ispace Technologies, US, Inc. participates in the E-Verify program.
