Principal ADCS Engineer

ABOUT FIREFLY AEROSPACE

Firefly Aerospace is a space and defense technology company that enables our world to launch, land, and operate in space – anywhere, anytime. As the partner of choice for critical space missions, Firefly is the only commercial company to launch a satellite to orbit with 24‑hour notice and the only company to achieve a successful Moon landing. Our launch vehicles, lunar landers, and orbital vehicles provide government and commercial customers with full mission services from low Earth orbit to the Moon and beyond.

Headquartered in north Austin, Texas, Firefly is looking for passionate, hardworking innovators to join our team and help fuel our successful trajectory into space.

As a Principal ADCS Engineer at Firefly, you will serve as a technical authority on spacecraft ADCS systems enabling missions spanning Earth orbit, cislunar space, and the lunar surface. This technical leadership role requires an authoritative knowledge base in spacecraft ADCS disciplines, with a proven track record of solving the most complex ADCS challenges on operational missions. In this role, you will drive technical strategies and capability development, provide authoritative technical review and guidance, and mentor engineers at all levels.

This position balances hands‑on technical contribution with strategic leadership, offering the opportunity to influence system architectures from concept through operations, represent Firefly's technical excellence to customers and executive leadership, and solve unique problems that push the boundaries of spaceflight.

• Serve as a technical authority on the attitude determination and control of spacecraft, providing expertise across programs and domains
• Develop and validate novel ADCS methodologies, tools, and best practices for complex or unprecedented mission requirements
• Lead resolution of the most challenging ADCS problems across the organization
• Provide authoritative technical review and oversight of spacecraft ADCS designs, changes, and risks
• Establish technical standards for system design, software development, testing, and requirement verification
• Drive ADCS strategy and roadmap development, identifying capability gaps, investment priorities, and opportunities for adopting emerging technology
• Initiate and execute continuous improvement initiatives for ADCS processes, tools, and operational efficiency
• Represent ADCS expertise in executive‑level technical reviews, mission milestone reviews, customer meetings, and proposal efforts
• Participate in critical technical work including algorithm development, test campaign execution, and mission operations support
• Mentor and develop engineers at all levels, cultivating the next generation of technical leaderr

• Master's degree or PhD in aerospace engineering or related field, or bachelor's degree with substantial technical accomplishments demonstrating analytical rigor equivalent to graduate research
• 10+ years of experience in spacecraft ADCS with demonstrated expertise and technical leadership across multiple programs
• Demonstrated experience supporting operational spacecraft programs through multiple missions
• Mastery of spacecraft attitude dynamics with deep expertise in a specialization area combined with strong understanding across ADCS domains
• Experience developing strategic vision, technical roadmaps, and capability development initiatives for ADCS teams
• Proficiency in the development of flight software and physics simulations for spaceflight applications
• Software engineering expertise with proficiency in development practices including version control, code review, testing, documentation, and CI/CD
• Proficiency with Python, C++, Linux, and specialized tools and libraries relevant to domain
• Comprehensive knowledge of spacecraft subsystems and their impact on ADCS design and performance
• Demonstrated ability to elevate the technical capabilities of engineers through mentorship, developing high performers who strengthen the organization around them
• Excellent communication and presentation skills, with an ability to convey complex technical concepts to executives, customers, and…