C/C++ Embedded Developer - UAV Systems

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Job Description

Join our cutting-edge team , a fast-growing defense tech startup redefining the future of autonomous UAV platforms. We’re looking for an experienced and passionate Senior C/C++ Embedded Developer to help build the next generation of real-time drone control systems as part of our Firmware Team.

You’ll contribute directly to the firmware stack that powers our UAVs—developing modules for sensor integration, motor control, navigation, and communication with the ground station. Your work will play a vital role in flight performance, safety, and mission reliability.

Location: Valencia, Spain (Hybrid – 3 days in office, 2 days remote)

Responsibilities:

• Contribute to flight controller firmware and onboard real-time systems • Interface with sensors (IMUs, GPS), actuators (motors, servos), and communication peripherals (SPI, I2C, UART) • Implement and extend communication protocols ( MAVLink and custom) • Collaborate with hardware teams on board bring-up and debugging • Use and adapt open-source libraries to meet drone and hardware needs

Requirements

• Proficiency in embedded C/C++ development (bare-metal and RTOS-based) • Experience with STM32, NXP, or similar MCU families • Familiarity with oscilloscopes, logic analyzers, and JTAG/SWD debuggers • Experience developing unit and integration tests for embedded code

Nice to have:

• Experience with Nuttx , FreeRTOS , or similar RTOS platforms • Familiarity with PX4, ArduPilot , or other popular drone software • Knowledge of sensor drivers, signal processing, sensor fusion, or control theory • Background in aviation, automotive, robotics, or mission control systems • Previous experience developing and debugging in WSL or Ubuntu

• Medical insurance – Because your health and that of your family is our top priority. You’re covered!
  
• Holiday flat in Valencia – Dreaming of sunny days in Spain? Our company flat is ready for your next getaway.
  
• Gifts for special occasions – We love celebrating you! Expect thoughtful surprises on Easter, Women’s Day, Father’s Day, and more.
  
• Anniversary gifts – Each work anniversary is a milestone worth celebrating, and we’ll continue to mark every year you spend with us with a special gift.
  
• Team-building events – We value connection beyond work, offering engaging team experiences in great locations to inspire collaboration and fun.
  
• End of the year celebrations –We wrap up each year with a special celebration, filled with joy, laughter, and unforgettable moments.
  
• Day off on your birthday – Your special day is yours to enjoy, no work required!
  
• Monthly massage day – Treat yourself to a relaxing massage at the office once a month.
  
• Monthly themed lunch – Delicious food and great company – let’s keep sharing laughs and stories around the table each month.
  
• Community and social initiatives – We bring people together through activities like Bring Kids to the Office Day, donation drives, tree planting, sporting events, decorating the Christmas tree with your colleagues, celebrating new office openings, Principal33’s anniversary, Exchange Office, and more!
  
• Access to Udemy Learning Platform – We know growth matters, so you now have unlimited access to thousands of courses on Udemy. Develop your skills, anytime, anywhere!
  
• German Language Courses –We offer dedicated language courses to help you develop your German skills, supporting both personal and professional growth.
  
• SAP Courses – We’re preparing to launch specialized SAP training sessions to support your professional development and boost your expertise in this valuable field.
  
• Personal & Professional Growth – We support your development through masterclasses with experienced trainers and are open to investing in courses and training that help you grow.