Senior Software Test 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.

SUMMARY

As a Senior Software Test Engineer, you will play a key role in ensuring the reliability and mission readiness of Firefly Aerospace's launch vehicle and spacecraft software systems. You will lead verification and validation (V&V) efforts across all-digital and hardware-in-the-loop (HIL) environments, driving the quality and certification of Flight and Ground Software that control our rockets, spacecraft, and launch facilities.

You will design, implement, and evolve the test architecture supporting formal qualification and certification testing, including safety-critical software verification required by U.S. Space Force and FAA standards. You will also serve as a technical mentor and reviewer, guiding peers through disciplined software validation processes and helping shape Firefly's software quality culture.

KEY RESPONSIBILITIES

• Own and evolve the end-to-end test architecture for Flight and Ground Software, ensuring scalability, traceability, and integration across multiple simulation and HIL environments.
• Design and automate complex test frameworks that execute formal qualification and certification tests with full traceability to requirements and safety-critical compliance standards.
• Lead test planning and strategy for major releases, coordinating with Flight Software, Ground Systems, Simulation, and Systems Engineering to define verification coverage and acceptance criteria.
• Develop automated pipelines for continuous integration, regression testing, and qualification test reporting.
• Act as a senior peer reviewer for software changes, test procedures, and verification results, providing guidance on safety, performance, and design implications.
• Mentor and coach junior test engineers in test design, scripting, and safety-critical test documentation.
• Collaborate with certification and compliance stakeholders to ensure alignment with standards such as DO-178C, NASA NPR 7150.2C, RCC 319-19, and AFSPCMAN 91-710 Vol. 3.
• Champion test best practices across Firefly Aerospace, helping evolve tools, methodologies, and metrics for continuous improvement.

REQUIRED QUALIFICATIONS

DESIRED QUALIFICATIONS

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.