Principal Software Engineer /Senior Principal Software Engineer - TS/SCI

Principal Software Engineer /Senior Principal Software Engineer - TS/SCI

Rocket Lab is an end-to-end space company delivering responsive launch services, complete spacecraft design and manufacturing, payloads, satellite components, and more all with the goal of opening access space. The rockets and satellites we build, and launch enable some of the most ambitious and vital space missions globally, supporting scientific exploration, Earth observation and missions to combat climate change, national security, and exciting new technology demonstrations.

Our Electron rocket has become the second most frequently launched U.S. rocket annually and has delivered more than 230 satellites to orbit, all while we work to develop Neutron, our upcoming medium-lift, reusable launch vehicle for larger constellation deployment. Our Space Systems business designs and builds our extensive line of satellites, payloads, and their components, including spacecraft that have been selected to support NASA missions to the Moon and Mars and components used on the James Webb Space Telescope.

Rocket Lab's Space Systems team is responsible for every satellite and satellite component made by Rocket Lab: from complete satellites destined for missions to the Moon and Mars, to the individual components and subsystems that make up a satellite like solar panels, flight software, reaction wheels and star trackers, separation systems, radios, and more. Our Space Systems team is made up of engineers, technicians, and designers who design, create, and put together our own satellites for missions across the commercial, government, and defense sectors, or who build and assemble satellite hardware and software that supports other satellite missions.

Principal Software Engineer/ Senior Principal Software Engineer TS/SCI

Based out of our headquarters in Long Beach, CA, we are seeking a highly skilled and experienced Principal Software Engineer/ Senior Principal Software Engineer to serve as the Chief Software Engineer for a major constellation program. In this pivotal role, you will lead the design, development, and delivery of scalable, reliable, and mission-critical software systems for space-based applications. With expertise in flight software, embedded systems, and ground software systems, you will collaborate with systems teams, software engineers, and stakeholders to ensure mission success. If you have a passion for aerospace and defense, hold an active TS/SCI clearance, and thrive in fast-paced environments, this is your opportunity to make a tangible impact on national security and space exploration.

What You'll Get To Do:

• Lead Software Architecture Design: Define and evolve the end-to-end software architecture for flight and ground systems, ensuring scalability, reliability, security, and mission success.
• Develop Flight Software: Design application software for spacecraft operating within Real-Time Operating Systems (RTOS) such as VxWorks, or embedded Linux, including hardware drivers for spacecraft sensors and actuators such as IMUs, Star Trackers, and Reaction Wheels.
• Build Ground Software Systems: Architect and deploy web-based ground software platforms for spacecraft operations, integrating flight and ground systems to support diverse mission profiles.
• Test and Validate Systems: Develop unit tests within a Continuous Integration (CI) framework and collaborate with hardware-in-the-loop test engineers to verify combined software and hardware functionality.
• Collaborate and Lead: Provide technical direction and mentorship to engineering teams, act as a trusted advisor to leadership, and partner with stakeholders to align software systems with mission requirements.
• Support On-Orbit Operations: Ensure software performance in harsh environments and contribute to mission-critical operations.

Qualifications You'll Bring As Principal Software Engineer:

• Bachelor's degree in engineering, computer science, or a related technical discipline.
• 12+ years of professional software development experience, including embedded systems and ground software.
• Proven expertise in architecting scalable and reliable software systems for aerospace or defense applications.
• Proficiency in C and C++ for embedded software development and python for testing.
• Experience with both DIO and AIO (Digital and Analog Inputs and Outputs).
• Experience with integrating hardware, including implementing ICDs, and debugging.
• Experience with deriving the Flight Software architecture from the electrical design including reading a master ICD list and/or schematics.
• Experience with RF ground to space communication.
• U.S. citizenship is required, due to program requirements
• Active TS/SCI clearance is required

Qualifications You'll Bring As Senior Principal Software Engineer:

• Bachelor's degree in engineering, computer science, or a related technical discipline.
• 15+ years of professional software development experience, including embedded systems and ground software.
• Proven expertise in architecting scalable and reliable software systems for aerospace or defense applications.
• Proficiency in C and C++ for embedded software development and python for testing.
• Experience with both DIO and AIO (Digital and Analog Inputs and Outputs).
• Experience with integrating hardware, including implementing ICDs, and debugging.
• Experience with deriving the Flight Software architecture from the electrical design including reading a master ICD list and/or schematics.
• Experience with RF ground to space communication.
• U.S citizenship is required, due to program requirements
• Active TS/SCI clearance is required

These Qualifications Would Be Nice To Have:

• Advanced degree in aerospace engineering, computer science, or a related field.
• Strong systems-level thinking with the ability to balance technical trade-offs across performance, security, and maintainability.
• Experience developing software and drivers with CAN/CAN-FD, SpaceWire, and/or UDP/TCP protocols.
• Experience leading teams and working with program management to plan out work and staffing.
• Expertise in microservice architectures, distributed systems, and modern web frameworks such as FastAPI.
• Full-stack development experience, including:
• Backend: Golang, and/or Rust.
• Frontend: Typescript and Angular.
• Database: InfluxDB, PostgreSQL, or equivalent.
• Familiarity with CCSDS standards, including Space Packet Protocol, COP-1, and CFD.
• Experience designing software for autonomous vehicles operating in harsh environments, such as satellites or autonomous vehicles.
• Expertise in Git-based workflows, CI/CD pipelines, and Kubernetes orchestration.
• Understanding of modern authentication/authorization frameworks (e.g., OAuth).

Additional Requirements:

• Specific vision abilities required by this job include close vision, distance vision, peripheral vision, depth perception, and the ability to focus
• Regularly required to sit, use hands and fingers, operate computer keyboard and controls, and communicate verbally and in writing
• Must be physically able to commute to buildings
• Occasional exposure to dust, fumes and moderate levels of noise

Level and base salary will be determined on a case-by-case basis and may vary based on the following considerations: job-related knowledge and skills, education, and experience. Base salary is just one component of our total rewards package at Rocket Lab. Employees may also receive company equity and access to a robust benefits package including: top tier medical HMO, PPO & a 100% company-sponsored medical HSA plan option, dental and vision coverage, 3 weeks paid vacation and 5 days sick leave per year, 11 paid holidays per year, flexible spending and dependent care savings accounts, paid parental leave, disability insurance, life insurance, and access to a 401(k) retirement plan with company match. Other perks include: Discounted employee stock purchase program, subsidized EV charging stations, onsite gym, food and drinks, and other discounts. Eligibility for benefits may vary based on employment status, please check with your recruiter for a comprehensive list of the benefits available for this role. Benefit programs are subject to change at the company's discretion.

Base Pay Range (CA Only) $180,000 - $255,000 USD

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