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 a Signal Processing Engineer to design and optimize the algorithms that transform raw optical signals into physiological insights. You’ll work on both real-time embedded pipelines and offline post-processing, ensuring our models are accurate and causal, and closely follow physiological trends.
If you’ve ever tuned a filter to perfection or extracted heartbeats from noise, this is your playground.
What you will do- Design, prototype, and validate signal processing algorithms for real-time and offline applications.
- Work with Python, C, and C++ to implement efficient, scalable processing chains.
- Develop filters, motion compensation, and adaptive algorithms for PPG and related optical signals.
- Optimize computational pipelines for embedded execution while preserving accuracy.
- Collaborate with firmware and data science teams to ensure cross-stack consistency.
- Conduct spectral, statistical, and time-frequency analyses on sensor data.
- Maintain algorithm documentation, version control (GitHub), and reproducible experiments.
- Contribute to algorithm testing frameworks and performance evaluation metrics.
- 5+ years of experience in biomedical or physical signal processing.
- MSc degree in Signal Processing, Biomedical Engineering, Applied Physics, or related discipline (HBO + 10 yrs exp accepted).
- Proven track record with low-level sensor data, ideally PPG / similar optical signals.
- Strong command of digital filtering, adaptive signal processing, and spectral analysis.
- Familiarity with causality constraints in real-time systems.
- Bonus: experience with laser-speckle or optical flow-based signal extraction.
- Fluent in both Python (for research) and C/C++ (for implementation).
- Pragmatic, analytical, and excited to work across algorithmic and system boundaries.
- Thrives in lean, agile environments – enjoys wearing multiple hats and taking ownership.
- Believes in synergy: great products emerge when experts in different domains collaborate closely.
- A salary matching your experience with potential equity participation.
- A pivotal role in building a deep-tech biosensing product.
- Direct collaboration with experts in optics, signal processing, and data science.
- The chance to shape how world-leading companies integrate our technology.
- Hybrid work culture: in-person collaboration in Delft at least 2 days/week, work from home when you need focus.
- 25 paid holiday days per year.
- Budget for personal development and your home office.
- The satisfaction of building technology that directly improves health monitoring.
To apply: Send your CV and motivation to hr@praxasense.com.
Submissions without a motivational letter will result in automatic rejection.