Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

I am a Data Scientist and Machine Learning Engineer with over 10 years of professional experience and a strong academic background in Computer Science and Artificial Intelligence. I help clients develop modern machine learning solutions across the full lifecycle, from data analysis and solution design to implementation and live production monitoring.…

Stephan Baier





I am a Data Scientist and Machine Learning Engineer with over 10 years of professional experience and a strong academic background in Computer Science and Artificial Intelligence. I help clients develop modern machine learning solutions across the full lifecycle, from data analysis and solution design to implementation and live production monitoring.…

Available to hire

I am a Data Scientist and Machine Learning Engineer with over 10 years of professional experience and a strong academic background in Computer Science and Artificial Intelligence. I help clients develop modern machine learning solutions across the full lifecycle, from data analysis and solution design to implementation and live production monitoring.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Work Experience

Freelance Data Scientist at Baier Data & AI Consulting

October 1, 2025 - Present

Led end-to-end ML projects for clients, including real-time identity document extraction and verification; designed hybrid AWS/on-prem architectures, and guided cross-functional teams through requirements, model development, deployment, and governance.

Team Lead Data Science at Check24 GmbH

March 1, 2024 - September 1, 2025

Led data science initiatives for Check24, building and productionizing ML-based decision support in a volatile market. Responsibilities included data ingestion, feature engineering, model development and evaluation, and creating interpretable visualizations for stakeholders. Implemented end-to-end ML lifecycle with monitoring, governance and compliance; collaborated with cross-functional teams to translate business requirements into scalable ML solutions.

Lead Machine Learning Engineer at RS Alpha Capital GmbH

June 1, 2021 - February 28, 2024

Designed and deployed a scalable ML infrastructure for real-time trading environments. Built and automated GPU-based training jobs, implemented CI/CD pipelines, and established monitoring to counter model drift with automated retraining, ensuring high availability and regulatory compliance.

Senior Data Scientist at Data Reply GmbH

May 1, 2018 - May 31, 2021

Led NLP-driven projects for semantic search and entity linking, analyzed sales funnels, and developed an interactive web application to visualize conversion paths and model results for business stakeholders.

Industrial Research Fellow at Siemens AG

October 1, 2013 - April 1, 2018

Engaged in industrial AI/ML research, contributing to advanced algorithms and their application in manufacturing and automation contexts.

Software Developer at Steria Mummert AG

September 1, 2012 - June 30, 2013

Software development work contributing to enterprise-grade solutions and system integrations.