Who we are

At Praxa Sense, we’re redefining non-invasive health monitoring with our optical innovation ALIS – a speckle-based biosensor enabling new frontiers in remote vital sign tracking.

We’re looking for an Embedded Firmware Engineer who thrives at the intersection of hardware and code – crafting the logic that turns precision optics and electronics into accurate, reliable data streams. You’ll design and implement embedded systems software for our ARM-based sensing platform, ensuring that every photon and every signal is handled efficiently and intelligently.

Your firmware will be the heartbeat of ALIS – determining how the sensor measures, synchronizes, filters, and communicates.

What you will do

  • Design, develop and maintain scalable embedded firmware in C++ for ARM32-based microcontrollers.
  • Design and implement modular drivers, data acquisition routines, and real-time control loops.
  • Collaborate closely with signal processing and data science engineers to align timing, synchronization, and calibration logic.
  • Optimize for power, memory, and timing constraints without sacrificing maintainability.

What we are looking for

Core experience:

  • Modern C++ (object-oriented design, templates, RAII).
  • Solid resource ownership and memory management practices.
  • Real-time operating systems (e.g., FreeRTOS, Azure RTOS / ThreadX, Zephyr).
  • Communication protocols (e.g., UART, I2C, SPI, USB).
  • Debugging tools (e.g., J-Link, logic analyzers, oscilloscopes).
  • ARM Cortex-M architecture.
  • Firmware performance and power consumption profiling.
  • 3+ years in embedded firmware development for real-time systems.
  • MSc in Electrical Engineering, Embedded Systems, Computer Engineering, or equivalent.

Software engineering mindset:

  • Scalable software architecture designs with clear separation of concerns.
  • Git, CMake, and testing frameworks (e.g., GoogleTest).
  • CI/CD and agile development experience.

How you work:

  • You thrive in lean, agile environments and enjoy taking ownership.
  • You believe great products emerge when experts collaborate closely.

What we offer

  • Salary matching your experience with potential equity participation.
  • A pivotal role in building the firmware foundation of a deep-tech biosensing product.
  • Direct collaboration with experts in optics, signal processing, and data science.
  • The chance to shape how world-leading companies evaluate and integrate our technology.
  • Hybrid work culture: in-person collaboration in Delft at least 2 days/week.
  • The satisfaction of building technology that directly improves health monitoring.

To apply: Send your CV and motivation to [email protected].
Submissions without a motivational letter will result in automatic rejection.