Machine learning · Causal inference · Healthcare

Kiril Klein, PhD

From clinical data to
reliable models and evidence.

I build machine learning systems for healthcare and develop methods to estimate treatment effects from observational data.

Machine Learning Engineer at Aiomic · Copenhagen

Background

Research depth. Engineering ownership.

At Aiomic, I develop the clinical ML stack, from data requirements and model training to blinded validation and production integration. My work combines transformers, clinical NLP, and classical machine learning.

I completed my PhD at the University of Copenhagen and the Pioneer Centre for AI, working on scalable causal inference with electronic health records in the PHAIR project. My earlier training is in physics and computational physics.

Causal inference CV (PDF)

Selected research

PhD thesis · University of Copenhagen · 2026

Scalable Causal Inference on Electronic Health Records Using Transformers

Connecting EHR transformers with target trial emulation: from clinical prediction to treatment-effect estimation and large-scale drug-safety screening.

Read the thesis PDF · 11 MB
All publications on Google Scholar

Open-source software

CausalEstimate

A Python library for treatment-effect estimation from propensity scores and outcome predictions, including IPW, AIPW, TMLE, and matching.

BONSAI

A collaborative framework for transformer modelling of electronic health records. I contributed across the codebase and coordinated development of the PHAIR-EHR causal-inference extension.

More on GitHub