Job description

ABOUT Firefly Aerospace is a space and defense technology company on a mission to reliably and repeatedly launch, land, and operate space systems from Earth to the Moon and beyond. As the partner of choice for critical space missions, Firefly is the first commercial company to launch a satellite to orbit with 24-hour notice and the first company to achieve a successful Moon landing. Headquartered in north Austin, Texas, Firefly is looking for passionate, hardworking innovators to join our team and help fuel our successful trajectory into space. SUMMARY As a Spacecraft GNC Engineer at Firefly, you will design, analyze, and operate the GNC systems of operational spacecraft. In this role, you will develop GNC flight and simulation software, perform analyses, and support mission operations while continuing to build breadth across core GNC competencies. This position offers hands-on experience with spacecraft attitude determination and control systems, onboard navigation, sensor and actuator modeling, and real-time mission operations across multiple spacecraft. You will deepen your technical capabilities and refine your desired career trajectory, taking ownership of system elements and software tools as you grow toward a senior GNC role at Firefly. RESPONSIBILITIES • Develop and validate GNC software to ensure successful spacecraft mission execution • Tune and configure GNC algorithms for all phases of spacecraft flight • Perform 6DOF simulation analysis of nominal and dispersed flight profiles • Develop and maintain simulation models for sensors, actuators, and environmental effects • Create tools to automate workflows, process simulation and flight data, and generate technical reports • Conduct stability analysis, sensitivity studies, and hardware-in-the-loop testing of GNC under nominal and off-nominal conditions • Interface with cross-discipline teams to integrate GNC software with spacecraft hardware • Serve as a GNC console operator for spacecraft operations and perform post-mission analysis to improve spacecraft models • Author technical documentation and analysis reports that communicate GNC concepts and results to diverse audiences • Build proficiency across core GNC competencies while contributing to continuous improvement of GNC processes and tools QUALIFICATIONS Required • Bachelor's degree in aerospace engineering, mechanical engineering, electrical engineering, physics, mathematics, computer science, or related field • 4-8 years of professional experience in spacecraft guidance, navigation, and control, or related technical discipline • Advanced knowledge of spacecraft orbital mechanics, spacecraft dynamics, state estimation, attitude dynamics, and sensor modeling • Experience developing high-fidelity sensor and actuator models • Proficiency in a specialization of spacecraft GNC: Navigation, Guidance, Controls, Software Development • Proficiency in hardware-in-the-loop testing and requirement verification for mission-critical systems • Proficiency with Python for scripting, data analysis, and visualization • Experience with C++ for real-time or flight-critical applications • Software engineering expertise with proficiency in development practices including version control, code review, testing, documentation, and CI/CD Desired • Advanced degree (master's or PhD) in aerospace engineering or related field with focus on GNC • Experience supporting spacecraft GNC across development, integration, and mission operations • Expertise in C++ for embedded systems or real-time applications • Experience with modern flight software frameworks and real-time operating systems • Proficiency with CI/CD workflows and automated testing practices • Experience with Linux development environments and command-line tools • Exposure to spaceflight mission operations or spacecraft commissioning Firefly offers outstanding benefits for our employees, including generous health, dental and vision plans with low plan deductibles, parental leave, educational reimbursement, short term disability, and flexible PTO options. To conform to U.S. Government space technology export regulations, including the International Traffic in Arms Regulations (ITAR) you must be a U.S. citizen, lawful permanent resident of the U.S., protected individual as defined by 8 U.S.C. 1324b(a)(3), or eligible to obtain the required authorizations from the U.S. Department of State. Firefly Aerospace, Inc. is an Equal Opportunity Employer; employment with Firefly is governed based on merit, competence and qualifications and will not be influenced in any manner by race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability or any other legally protected status

Requirements

Must-haves

Develop and validate GNC software to ensure successful spacecraft mission execution
Tune and configure GNC algorithms for all phases of spacecraft flight
Perform 6DOF simulation analysis of nominal and dispersed flight profiles
Develop and maintain simulation models for sensors, actuators, and environmental effects
Create tools to automate workflows, process simulation and flight data, and generate technical reports
Conduct stability analysis, sensitivity studies, and hardware-in-the-loop testing of GNC under nominal and off-nominal conditions
Interface with cross-discipline teams to integrate GNC software with spacecraft hardware
Serve as a GNC console operator for spacecraft operations and perform post-mission analysis to improve spacecraft models
Author technical documentation and analysis reports that communicate GNC concepts and results to diverse audiences
Build proficiency across core GNC competencies while contributing to continuous improvement of GNC processes and tools
Bachelor's degree in aerospace engineering, mechanical engineering, electrical engineering, physics, mathematics, computer science, or related field
4-8 years of professional experience in spacecraft guidance, navigation, and control, or related technical discipline
Advanced knowledge of spacecraft orbital mechanics, spacecraft dynamics, state estimation, attitude dynamics, and sensor modeling
Experience developing high-fidelity sensor and actuator models
Proficiency in a specialization of spacecraft GNC: Navigation, Guidance, Controls, Software Development
Proficiency in hardware-in-the-loop testing and requirement verification for mission-critical systems
Proficiency with Python for scripting, data analysis, and visualization

Nice-to-haves

Advanced degree (master's or PhD) in aerospace engineering or related field with focus on GNC
Experience supporting spacecraft GNC across development, integration, and mission operations
Expertise in C++ for embedded systems or real-time applications
Experience with modern flight software frameworks and real-time operating systems
Proficiency with CI/CD workflows and automated testing practices
Experience with Linux development environments and command-line tools
Exposure to spaceflight mission operations or spacecraft commissioning

Application prep

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Keywords to mirror

pythonci/cd

Platform: clearcompany
Effort: medium

Benefits

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Dental

Vision

Pto

Parental Leave