Katarzyna Wreczycka

B.Sc. & M.Sc. in Computer Science & Bioinformatics @MIMUW
Ph.D. in Computational Biology @MDC-BIMSB

Data scientist with 9+ years of experience in machine learning, software development, and biomedical research. Here, I share insights from my research and industry projects in data analysis, tool development and disease (epi)genomics. This is my personal website.

Explore my project portfolio, technical skills and selected code samples.

Experience

Consultancy for Pharmaceutical Companies, Start-ups, and Consulting Firms
Freelance in Bioinformatics and Data Science
February 2023 – Now

ETH Zürich & Functional Genomics Center Zürich
Bioinformatician | Scientific Assistant II
April 2025 – July 2025

Bioinformatics and Omics Data Science Platform at MDC-BIMSB
PhD Student
September 2015 – November 2021

Institute of Computer Science, Polish Academy of Sciences & MDC BIMSB
Visiting Predoctoral Researcher
March 2015 - August 2015

Skills

Core technologies:

Python Pandas NumPy Matplotlib

Seaborn

Polars

DuckDB Git Docker R

Tidyverse Bash

ML | AI:

PyTorch TensorFlow Scikit-learn R-caret Kubernetes

Cloud:

AWS GCP

Workflows:

Nextflow

Snakemake

Selected publications

Peer-reviewed articles in top-tier journals (350+ citations):

Strategies for analyzing bisulfite sequencing data. Journal of Biotechnology, 261, 105-115, 2017
PiGx: reproducible genomics analysis pipelines with GNU Guix. GigaScience, 7(12), giy123, 2018
HOT or not: Examining the basis of high-occupancy target regions. Nucleic Acids Research, 47(11), 5735–5745, 2019
Cardiovascular disease biomarkers derived from circulating cell-free DNA methylation. NAR Genomics and Bioinformatics, 5(2), lqad061, 2023

Freelance

I have been freelancing as a bioinformatician and data scientist since 2023. Some of my high profile clients include:

For collaboration inquiries, please contact me at katwre [at] gmail.com.