Senior Flight Software Test Engineer

About Capella Space
Capella Space is a pioneer in Synthetic Aperture Radar (SAR) satellite technology and space-based signal intelligence. We empower government, commercial, and research organizations around the world with high-resolution, timely Earth insights that drive better decisions - across defense and intelligence, disaster response, infrastructure monitoring, environmental protection, energy, and more.

As a U.S.-based company, Capella designs, builds, and operates an advanced constellation of commercial SAR satellites in orbit today. Our satellites are backed by a fully automated tasking, collection, and delivery platform, delivering fast, reliable insights when and where our customers need them most. As a subsidiary of IonQ, a global leader in quantum computing, Capella is charting the future of Earth observation. Together, we're on a mission to bring quantum computing to space - unlocking ultra-secure, encrypted uplink and downlink capabilities, reducing latency, and enabling powerful on-orbit analytics. This visionary integration of advanced remote sensing and quantum technology will support customers with the highest level of data fidelity, security, and speed.

Capella was named one of Fast Company's 10 Most Innovative Companies in Space in 2023 and is a trusted partner of the U.S. Space Force, U.S. Air Force, U.S. Navy, NASA, the National Reconnaissance Office, and allied government agencies worldwide. Built In recognized IonQ on three of its 2025 Best Places to Work lists.

What Makes Capella Unique?
At Capella, we don't just imagine what's possible - we build it. We're a mission-driven team fueled by curiosity, grit, and a shared commitment to redefining the limits of space innovation. Our environment is fast paced, rooted in humble collaboration. Every team member plays a critical role in shaping the future of our technology and our industry. If you're ready to roll up your sleeves and help solve problems that others call impossible—we're the place for you. We believe great ideas can come from anywhere, and we thrive on diverse perspectives that help us move faster, think deeper, and push the boundaries of innovation. Whether you're new to the space industry or a seasoned expert, you'll find a team that values creativity, integrity, and bold thinking. Join us as we build the future of SAR—and take quantum to space.

About the Role & Team
As a Senior Test Engineer on the Flight Software team, you will be responsible for developing and maintaining the test environment that verifies our flight software to support running robust software on our satellite fleet in space You will interact daily with flight software engineers, ground software engineers, FPGA developers, and various other subsystem owners to develop, maintain, and implement new test scripts and test system features for validating the flight software. You will have a demonstrable track record of working with complex systems, understanding systems architecture, and setting test plans to ensure the flight software is tested in an extensive manner.

Role Responsibilities

• Design, implement, and execute test plans to identify issues, bugs, and defects before software release.
• Lead the creation and execution of detailed, comprehensive, and well-structured test plans and test cases.
• Develop and peer review software test code, specifically automated Python test scripts to be leveraged in the Continuous Integration environment.
• Perform software test trade studies such as: test management tools, continuous integration testing techniques and methodologies, software simulation platforms, etc.
• Manage (and execute) analysis of test results and test report generation
• Implement automated testing tools and frameworks to optimize the testing and verification processes.
• Report bugs and errors to development teams and provide insightful feedback to assist in the decision-making process.
• Liaise with internal flight software team members when necessary to clarify requirements or discuss testing strategies.
• Develop requirements and testing strategies in coordination with the flight software team.
• Collaborate with cross-functional teams (Program Management, Software Development, Flight Operations, etc.) to ensure quality throughout the software development lifecycle.
• Participate in Agile sprint planning, stand ups, and ticket tracking.
• Develop documentation and provide cross-training to other team members.
• Troubleshoot andx resolve software test issues in a timely manner.

Qualifications

• Bachelor's degree in computer science, computer engineering, electrical engineering, or related field of study.
• Familiarity with software test development and testing methodologies.
• Knowledge of Linux operating system environments and standard Linux tools.
• Strong knowledge of programming scripted languages (Python, shell script, etc.) and some experience with compiled languages (C, C++).
• Must be able to work both independently and in a team environment, and able to produce reliable products and documentation within established deadlines.
• Experience with version control, continuous integration, configuration management, deployment automation, containers, infrastructure orchestration and software testing. Gitlab experience preferred, but not necessary.
• Experience with hardware in the loop or simulated software testing environments.
• Experience working with real-time embedded systems.
• Hand-on experience with lab equipment and electronics hardware, e.g., oscilloscopes, logic analyzers.
• To conform to U.S. Government space technology export regulations, including the International Traffic in Arms Regulations (ITAR), Capella Employees must be a U.S. citizen, lawful U.S. permanent resident (i.e., current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum, or be eligible to obtain the required authorizations from the U.S. Department of State and/or the U.S. Department of Commerce, as applicable. Learn more about ITAR here.

Compensation
The annual salary range for this role as it is posted is $130,500 - $148, The final job level and annual salary will be determined based on the education, qualification, knowledge, skills, ability, and experience of the final candidate(s), specific office location and calibrated against relevant market data and internal team equity. Benefits listed in this posting may vary depending on the nature of your employment with Capella Space.

Benefits/Perks
In addition to an opportunity to take part in an innovative, collaborative and fast-growing business with a highly motivated and skilled team, we also take pride in taking care of our employees. Here are just a few ways that we show our appreciation:

• We provide extensive medical coverage, including strong vision and dental plans, flexible spending accounts, and additional supplemental health options.
• Paid Flexible Time Off Policy
• 401K Plan to invest in your long-term retirement goals
• Parental Leave program
• Lifestyle Spending