Firefly Aerospace · 6 days ago
Spacecraft Functional Test Engineer III
Cedar Park, TX
Full-time
Onsite
Senior Level
5+ years expFirefly Aerospace is a space and defense technology company that enables world-class launch and operation in space. They are seeking a Spacecraft Functional Test Engineer III to verify spacecraft performance from integration through launch, focusing on developing and executing functional test campaigns to ensure each vehicle is flight-ready.
AerospaceAir TransportationSatellite Communication
No H1B
U.S. Citizen Only
Responsibilities
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
Qualification
Required
Bachelor's degree in Electrical, Mechanical, Aerospace, Computer Engineering, or related field
5+ years of experience in spacecraft, aerospace, or complex electromechanical system test environments
Hands-on experience developing or executing functional or system-level test procedures
Familiarity with test automation frameworks and scripting languages (e.g., Python, C++, or similar)
Working knowledge of hardware/software interfaces, data acquisition, and telemetry systems
Strong analytical and troubleshooting skills with the ability to work across multiple engineering disciplines
Ability to work effectively in a fast-paced, collaborative environment supporting multiple spacecraft programs
Preferred
Experience with spacecraft-level testing, including power-on, system checkout, and mission simulation campaigns
Familiarity with Hardware-in-the-Loop (HWIL) systems, EGSE design, or simulation environments
Experience supporting transition from prototype to production-style test operations
Background in test data visualization or analytics (e.g., Power BI, Grafana, or custom dashboards)
Knowledge of software development practices, including version control, code review, and basic code readability
Familiarity with continuous improvement and process optimization principles applied to test operations
Experience with environmental test coordination, launch campaign support, or post-environmental functional testing
Benefits
Generous health, dental and vision plans with low plan deductibles
Parental leave
Educational reimbursement
Short term disability
Flexible PTO options
Company
Firefly Aerospace
Firefly Aerospace is a space company that develops and operates launch vehicles, lunar landers, and orbital vehicles for commercial mission.
501-1000 employees
Funding
Current Stage
Public CompanyTotal Funding
$796.56MKey Investors
Northrop GrummanRPM VenturesAE Industrial Partners
2025-08-07IPO
2025-05-29Corporate Round· $50M
2024-11-12Series D· $175M
Leadership Team
Jason Kim
Chief Executive Officer
Eric Salwan
Co-Founder
Recent News
Company data provided by crunchbase