Principal Software Engineer
Confirmed on the employer's own hiring board on Oct 22, 2026. First seen by Alion on Oct 21, 2026. Rocket Lab scores B on the Alion truth index.
ABOUT ROCKET LAB
Rocket Lab is the end-to-end space company building rockets, spacecraft, and critical subsystems that keep the world connected, protected, expand humanity’s reach to the Moon, Mars, and beyond. We move fast, build real hardware for meaningful missions, and make the impossible routine. Come shape the future with us.
SPACE SYSTEMS
Rocket Lab’s Space Systems division builds complete spacecraft, precision payloads to the components and subsystems that allow them to thrive in space including solar panels, flight software, star trackers, optical systems, separation systems, and radios.
The Space Systems division has enabled more than 1,700 missions, ranging from interplanetary exploration, in-space manufacturing to national security and defense initiatives. We have built spacecraft, payloads, and components for missions to the Moon and Mars, working with partners including NASA, the Space Development Agency, and the U.S. Space Force. Whether it’s a single high-performance spacecraft, constellation, or the vertically integrated components that help get to space - our Space Systems division is empowering the boldest and most ambitious space missions.
PRINCIPAL SOFTWARE ENGINEER
Rocket Lab Optical Systems solves mission-critical space domain and Intelligence, Surveillance, and Reconnaissance challenges for Department of Defense and Intelligence Community customers. Our vision is to revolutionize the space-based payload market with innovative and novel designs for space, terrestrial, and airborne environments. Building on more than 20 years of electro-optical and infrared systems innovation from Geost, Rocket Lab Optical Systems delivers solutions to the warfighter for responsive, scalable sensing solutions across all orbital domains.
As a Principal Software Engineer for Rocket Lab Optical Systems in Tucson, AZ, you will design flight software in support of spacecraft for Tranche 3 of the U.S. Space Development Agency's Proliferated Warfighter Space Architecture.
WHAT YOU’LL GET TO DO:
- Play a key role supporting the development of payload flight software for our Space Systems programs.
- Focus on deployment of novel algorithms into austere environments on Size/Weight/Power constrained sensor systems.
- Lead cross-functional teams to define technical requirements and deliver integrated solutions.
- Provide technical leadership in all aspects of software design and development starting with requirements generation and following through implementation, testing, deployment.
- Define and influence software architecture, design patterns, interfaces, and technical standards to ensure scalable, maintainable, and extensible solutions.
- Drive core software fundamentals of performance-oriented programming leveraging a variety of accelerator technologies.
- Mentor engineers across experience levels, provide technical guidance, and foster a culture of engineering excellence and continuous improvement.
- Support technical planning, effort estimation, risk identification, dependency management, and milestone delivery while communicating technical status and risks to stakeholders.
- Be part of a team of driven pioneers relentlessly tackling challenging projects, delivering on the impossible, and making an impact on the future of space.
YOU’LL BRING THESE QUALIFICATIONS AS PRINCIPAL SOFTWARE ENGINEER:
- Bachelor’s degree in computer science, computer engineering.
- 12+ years of experience in embedded software engineering experience.
- Experience in designing complex multithreaded application.
- Experience designing flight software.
- Ability to obtain and maintain an U.S. Government security clearance.
THESE QUALIFICATIONS WOULD BE NICE TO HAVE:
- Familiarity with high-performance and parallel processing.
- Exposure to novel architectures including FPGA, CUDA, etc.
- Familiarity with flight software system management.
- Experience with algorithm implementation.
- Exposure to Python and MATLAB is highly desired.
- Familiarity with numerical computing principles.
This position may require prolonged periods of sitting, standing, walking, computer work, and occasional exposure to moderate levels of noise, dust, and fumes in production areas.
WHAT TO EXPECT
We’re on a mission to unlock the potential of space to improve life on Earth, but that’s not an easy task. It takes hard work, determination, relentless innovation, teamwork, grit, and an unwavering commitment to achieving what others often deem impossible. Our people out-think, out-work, and out-pace. We pride ourselves on having each other’s backs, checking our egos at the door, and rolling up our sleeves on all tasks big and small. We thrive under pressure, work to tight deadlines, and our focus is always on how we can deliver, rather than dwelling on the challenges that stand in the way.
Important information:
FOR CANDIDATES SEEKING TO WORK IN US OFFICES ONLY:
To conform to U.S. Government space technology export regulations, including the International Traffic in Arms Regulations (ITAR), Rocket Lab 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.
Rocket Lab provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state, or local laws. This policy applies to all terms and conditions of employment at Rocket Lab, including recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation, and training.
Applicants requiring a reasonable accommodation for the application/interview process for a job in the United States should contact Giulia Johnson at [email protected]. This dedicated resource is intended solely to assist job seekers with disabilities whose disability prevents them from being able to apply/interview. Only messages left for this purpose will be considered. A response to your request may take up to two business days.
FOR CANDIDATES SEEKING TO WORK IN NEW ZEALAND OFFICES ONLY:
For security reasons, background checks will be undertaken prior to any employment offers being made to an applicant. These checks will include nationality checks as it is a requirement of this position that you be eligible to access equipment and data regulated by the United States' International Traffic in Arms Regulations.
Under these Regulations, you may be ineligible for this role if you do not hold citizenship of Australia, Japan, New Zealand, Switzerland, the European Union, or a country that is part of NATO, or if you hold ineligible dual citizenship or nationality. For more information on these Regulations, click here ITAR Regulations.