OmniBuds
Applied Machine Learning Scientist
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Location
Cambridge, UK
Department
Research, Algorithms & Engineering
Employment Type
Full-time | Hybrid
About The Role
As an Applied ML Scientist, you will develop machine-learning methods that turn multimodal, noisy wearable signals into reliable physiological and clinical insights. You will work at the intersection of machine learning, signal processing, and physiological sensing, developing models that can recover cardiovascular and autonomic information from real-world data and ultimately operate within the constraints of ear-worn devices.
What you’ll do
- Develop signal-processing and machine-learning methods for multimodal in-ear physiological signals, including PPG, cardiovascular acoustics, IMU, and temperature.
- Build models that fuse complementary sensing modalities to infer cardiovascular and autonomic physiology from noisy, incomplete, and context-dependent data.
- Develop methods for signal-quality assessment, measurement opportunity detection, uncertainty estimation, calibration, and model abstention.
- Lead the scientific pipeline from signal characterisation and representation learning through model development, validation, and prospective evaluation.
- Investigate multimodal fusion, temporal modelling, representation learning, and hybrid physiological + ML approaches.
- Design rigorous experiments and ablation studies to understand what information models are using, when inference is reliable, and where it fails.
- Work closely with clinical data scientists, clinicians, hardware, and firmware teams to optimise the complete sensing and inference system.
- Translate research models into efficient algorithms suitable for real-world and ultimately on-device deployment.
- Contribute to OmniBuds’ scientific roadmap for blood-pressure estimation, hypertension, and longitudinal cardiovascular health.
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What we expect
- Strong background in applied machine learning, signal processing, time-series modelling, or computational physiology.
- Experience developing ML methods for multimodal, physiological, biomedical, or other complex sensor data.
- Strong proficiency in Python and modern ML frameworks.
- Good understanding of model validation, generalisation, uncertainty, bias, and robustness.
- Experience with wearable/edge ML or resource-constrained inference is valuable, but not essential.
- Ability to go beyond maximising model accuracy and ask the harder scientific questions: why does the model work, when does it work, and when should we not trust it?
- Ability to collaborate across ML, clinical science, sensing, hardware, and engineering.
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Why OmniBuds
You’ll work on problems few teams in the world are tackling—bringing continuous, medical-grade inference onto tiny devices worn all day, every day.
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