Embedded Firmware Engineer – Precision Biosensing Platform

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

• 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.