Data Scientist

Daniel
Lutziger

Explore Projects
Zurich, Switzerland

Selected Work

Skiing IMU Data Analysis
2026Featured

Skiing IMU Data Analysis

Building a custom skiing motion sensor and analysis pipeline from scratch

Embedded & HardwareML ResearchPythonSignal Processing+4
Towards Scalable Foundation Models for Sleep EEG and Polysomnography
2025Featured

Towards Scalable Foundation Models for Sleep EEG and Polysomnography

A multimodal Transformer foundation model pretrained contrastively on ~13,000 PSG subjects across ten cohorts, evaluated on sleep staging and apnea detection.

ML ResearchPyTorchFoundation ModelsContrastive Learning+4
Blooming Beats
2025Featured

Blooming Beats

Personalized, explainable music recommender built on ten years of Spotify history

Data VizPublished WorkReactD3+2
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Profile

Data scientist in Zurich,
working on models that meet the physical world.

I trained multimodal transformers on sleep EEG for my master's at Idiap. These days I'm building a custom IMU sensor system to learn what a good ski carve looks like: hardware, firmware, and the model on top.

I gravitate toward messy data and real feedback loops. Python and PyTorch daily. I care more about why something works than what framework it runs in.

Off the keyboard I ski, lift, and occasionally write QMK firmware for keyboards that nobody asked for.

Zurich
MSc Data Science, UZH
ML · Engineering · Sensors · Embedded

How I think and work

01

What exactly is the goal?

I probably spend more time being confused than actually writing code. Most of the real work happens before I open my editor.

02

Claude pls explain this to me like I'm 5

I don't mind clever solutions, I just hate debugging them at 2am. If I can't explain a system in one sentence, I haven't finished designing it.

03

Wait what is this model saying...?

I have stared at a loss curve looking perfect and then plotted the actual outputs and it was just confidently wrong about everything. Now I test on the data I was hoping to avoid.

Tech Stack

Tools I work with

ML / Deep Learning

PyTorchHugging Face Transformersscikit-learnNumPyPandasPolarsJupyter

Backend & Data

PythonFastAPIPostgreSQLSPARQL / RDFDockerREST APIs

Frontend

TypeScriptReactViteTailwind CSSFramer Motion

Infra & Tooling

LinuxHetzner VPSGitGitHub ActionsAnsibleNginx

Embedded & Mobile

MicroPythonC (BNO055 / I2C / SPI)SwiftUIRP2350 / Raspberry Pi Pico