Develop, modify, and maintain custom PX4 firmware modules for mission-specific requirements
Implement custom flight modes, navigation algorithms, and control strategies
Integrate sensors, actuators, and payloads through PX4 driver and uORB message framework
Debug firmware issues using GDB, serial consoles, and flight log analysis
Patch and backport fixes across PX4 versions while maintaining stability
Build Systems & Toolchains
Maintain build infrastructure using CMake, Make, and embedded toolchains
Configure cross-compilation environments for ARM Cortex-M target architectures
Manage firmware dependencies, submodules, and third-party libraries
Create reproducible build configurations and automate firmware generation pipelines
Simulation & Hardware-in-the-Loop Testing
Develop and maintain SITL (Software-in-the-Loop) and HITL (Hardware-in-the-Loop) test environments
Integrate PX4 with physics-based simulation platforms for validation and regression testing
Create automated test scenarios to validate firmware changes before flight testing
Configure MAVLink communication interfaces for ground control and companion computer integration
System Integration & Testing
Integrate PX4 with companion computers running ROS2-based autonomy stacks
Develop MAVLink and UART communication protocols between flight controller and edge compute modules
Support flight test operations including pre-flight checks, log collection, and post-flight analysis
Collaborate with hardware, autonomy, and systems engineers to diagnose and resolve integration issues
Qualifications:
Bachelor's in Computer Science, Computer Engineering, Electrical Engineering, Aerospace Engineering, or related field – equivalent industry experience also welcome
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4-6+ years of experience in embedded software development with focus on real-time systems
Strong proficiency in C and C++ for embedded systems programming
Hands-on experience with PX4 autopilot firmware architecture and development
Deep understanding of build systems including CMake, Make, and embedded toolchains
Experience with ARM Cortex-M microcontrollers and embedded debugging tools
Solid grasp of control theory, state estimation, and sensor fusion fundamentals
Understanding of MAVLink protocol and communication with ground control stations
Experience developing and maintaining simulation environments for embedded systems testing
Preferred:
Experience with multi-rotor or fixed-wing UAV flight dynamics and control
Familiarity with ROS2 and companion computer integration architectures
Knowledge of Kalman filtering (EKF/UKF) and inertial navigation systems
Understanding of safety-critical software development practices
Experience with UART, SPI, I2C, and CAN bus protocols
Background in flight testing and airworthiness procedures
Knowledge of RTOS concepts and real-time scheduling
Experience with version control workflows for firmware development
Familiarity with Python for scripting, automation, and data analysis
Understanding of power systems, motor control, and electronic speed controllers
Experience with continuous integration systems for embedded firmware
What's in it for you:
Benefits:
Competitive total compensation package
Comprehensive benefit package options include medical, dental, vision, life, and more.
401k with company-match
3 weeks of paid time off each year
40 hours of sick time
12 annual company holidays
Why Join Zone 5 Technologies?
Innovative Environment: Work on cutting-edge technology that is shaping the future of defense and aerospace.
Collaborative Culture: Join a team of passionate professionals dedicated to pushing the boundaries of what’s possible.
Career Growth: Opportunities for professional development and career advancement.
If you are passionate about unmanned aircraft technology and want to be a part of a dynamic and growing company, we would love to hear from you. Apply today and join the Zone 5 Technologies team!
In compliance with federal law, all persons hired will be required to verify identity and eligibility to work in the United States and to complete the required employment eligibility verification form upon hire.
Zone 5 Technologies is a federal contractor and participates in E-Verify to confirm employment eligibility. As required by law, we will verify the identity and employment authorization of all new employees using the E-Verify system. Learn more about your rights and responsibilities under E-Verify: https://www.e-verify.gov.
About Zone 5 Technologies
Aerospace & Defense
Zone 5 Technologies develops advanced unmanned aircraft systems for government and defense applications, from mission planning to modular avionics.