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

We are seeking a Spacecraft Functional Test Engineer I to join our Assembly, Test and Launch Operations (ATLO) organization and play a key role in verifying spacecraft performance from integration through launch. As part of the spacecraft test team, you will develop and execute functional test campaigns that validate system and subsystem performance, ensuring each vehicle is flight-ready. This is a hands-on, highly cross-functional role that blends test architecture design, software-driven test execution, and real-time problem solving during vehicle integration and environmental testing.

You’ll work closely with subsystem design teams to define test requirements, develop test scripts and procedures, and build automation that enables repeatable, high-throughput testing across multiple spacecraft programs. This position is ideal for engineers who thrive in dynamic environments, enjoy working across hardware and software boundaries, and are passionate about building reliable spacecraft through disciplined testing.

RESPONSIBILITIES

As a Spacecraft Functional Test Engineer I, you will:

Develop and execute spacecraft functional and system-level test procedures to verify vehicle performance and mission readiness.
Design and maintain automated test scripts, configurations, and architectures to support efficient test execution across multiple programs.
Collaborate with subsystem responsible engineers and chief engineers to define test requirements and ensure traceability to verification objectives.
Support Hardware-in-the-Loop (HWIL) testbed development and maintenance, including defining configurations and integrating hardware/software interfaces.
Monitor and troubleshoot test results, identifying issues and driving root cause resolution across subsystems.
Plan and support test operations in cleanroom, environmental, and launch site environments.
Contribute to data management, telemetry visualization, and results analysis to ensure comprehensive verification and documentation.
Participate in continuous improvement efforts to streamline test processes, increase automation, and enhance test reliability.
Support the development of tools, dashboards, and analytics for test performance tracking and data-driven decision making.

QUALIFICATIONS

Basic

Bachelor’s degree in Electrical, Mechanical, Aerospace, Computer Engineering, or related field.
0–2 years of experience in aerospace, electromechanical systems, or test environments (internships, co-ops, or significant academic projects count).
Exposure to functional or system-level testing through coursework, research, or internships.
Familiarity with scripting languages such as Python, C++, or similar.
Basic understanding of hardware/software interfaces and data acquisition systems.
Strong analytical and problem-solving skills.
Ability to work effectively in a collaborative, fast-paced environment.

Desired

Internship or project experience involving spacecraft, robotics, avionics, or embedded systems.
Exposure to Hardware-in-the-Loop (HWIL) systems or simulation environments.
Experience with data visualization or basic analytics tools.
Familiarity with version control systems (e.g., Git).
Exposure to environmental testing or hardware integration environments.

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.

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