Astroscale U.S. is dedicated to the global Astroscale vision of ensuring the safe and sustainable development of space for future generations. Astroscale U.S. Inc. is a leading provider of on-orbit servicing solutions — including inspection, transportation, life extension, debris removal and refueling — for the U.S. government and commercial operators around the world. Headquartered in Denver, Colorado, Astroscale U.S. applies world-class rendezvous, proximity operations and docking capabilities, mission design, policy, and economics expertise to solve the complex challenges our customers face.
Astroscale U.S. Inc. is currently seeking a Senior Software Test Engineer to join the team in our Denver, Colorado office. As part of the Software Test team you will design and develop test routines and infrastructure to exercise and validate software and hardware components for our satellite mission programs.
- Develop and execute test plans and test cases for our software and hardware systems
- Work alongside leadership to manage the test plan and implementation of the test framework
- Lead test campaigns spanning spacecraft flight and ground systems
- Participate in design and code reviews to ensure that software meets quality standards
- Create and execute system level verification, validation, integration, and test plans
- Drive the improvement of software testing tools and processes
- Rapidly prototype software to prove out design concepts and participate in development of hardware-in-the-loop systems
- Collaborate with internal partner organizations and third-party organizations.
- Assess software and system issues to find solutions, including across software-hardware interfaces
- 8+ years of professional software engineering experience, including 3+ years of professional software test development
- Professional experience developing Python
- Experience developing C and/or C++
- Experience with Git, Docker, cloud services, modern CI/CD practices and software/hardware integration
- Familiarity with bash and Linux
- Excellent verbal and written communication skills
- Bachelor's degree, master’s degree or PhD in computer science, computer engineering or related field
- Passion for building next-generation space-sustainability technology
If you’re passionate about our mission and believe you’d be an outstanding addition to our team, don’t worry about checking every single box—or having a background solely in aerospace or defense. At Astroscale U.S., we’re committed to fostering a diverse, inclusive, and open-minded environment. We embrace a wide range of perspectives, experiences, and ways of thinking. If you’re excited about contributing to our work and think you’d thrive in this role, we encourage you to apply.
Salary range: $130,000 – $155,000. The salary range represents the low and high end of the Astroscale U.S. Inc. salary range for this position. Actual salaries will vary and may be above or below the range based on various factors including but not limited to experience, knowledge, and ability as applicable to the role.
The application deadline is July 5, 2026.
Please note Astroscale U.S. is a U.S. Government registered, export control compliant company, as such applicants should be a U.S. person or U.S. citizen.
Astroscale U.S. Inc. is an E-Verify employer.
Skills Required
- 8+ years professional software engineering experience, including 3+ years of software test development
- Professional experience developing Python
- Experience developing C and/or C++
- Experience with Git
- Experience with Docker
- Experience with cloud services
- Experience with modern CI/CD practices
- Experience with software/hardware integration
- Familiarity with bash and Linux
- Excellent verbal and written communication skills
- Bachelor's, Master's, or PhD in computer science, computer engineering, or related field
- Must be a U.S. person or U.S. citizen (export control compliance)
- Passion for building space-sustainability technology
What We Do
Astroscale U.S. is transforming the future of American space operations through advanced on-orbit servicing and logistics. Founded in 2019 and headquartered in Denver, Colorado — with a strategic presence in Washington, D.C. — we enable national security, civil, and commercial missions to thrive by extending the life, agility, and resilience of space assets. As the U.S. subsidiary of Astroscale, our mission is aligned with a global vision: to secure the safe and sustainable use of space for the benefit of future generations. We design, build, and operate cutting-edge on-orbit solutions tailored to our customers’ needs, while drawing on Astroscale’s worldwide network to accelerate innovation and delivery. Astroscale U.S. maintains full in-house engineering, development, and operations capabilities to ensure we meet the complex demands of today’s most critical space missions. With a growing portfolio of U.S. government and commercial contracts, and leadership roles in key industry and policy forums, Astroscale U.S. is not just supporting the space domain, we’re redefining its future.
