Christian Schulz
Data-Science/Data-Engineering/AI-Engineering Expert
Experience
Jan 2025 - Present
6 monthsPartner and Data-Science Expert
Datawhizz GmbH & Co. KG
- Building a concept/framework to deploy Large Language Models easy and fast in Kubernetes.
- Product development in ML/LLM on our behalf
- Technologies: Git, CI/CD (Gitalb pipelines / Github Actions), PySpark, Databricks, Pandas, Python, SQL, PostgreSQL, Terraform, Airflow, Jupyter, K8s, GCP, Langchain, Langgraph, Streamlit, Huggingface, FastAPI, Deno etc.
May 2024 - Present
1 year 2 monthsData-Science Expert
Pro7/Virtual Minds GmbH
- Dockerizing and improving different Machine Learning and Reporting Services with PostgreSQL & MongoDB
- End2End data solution
- Classification models in predictive behavioral context: FeatureEngineering, ConfusionMatrix, LiftCharts
- Technologies: Git, PySpark, CI/CD (Gitlab pipelines / Github actions) , Databricks, Pandas, Python, SQL, PostgreSQL, Terraform, Airflow, Jupyter, K8s, GCP, Langchain, Langgraph, Streamlit, Huggingface, FastAPI
Nov 2023 - Dec 2023
2 months Cologne, Germany
Data-Engineering Expert
Sysfacts AG
- POC - Migration MicroService into Kubernetes on GCP
- Creating different manifests for the Kubernetes Cluster
- Performance tests on the Kubernetes Cluster
- Consulting
- Technologies: Git, CI/CD (Gitlab pipelines), Google Cloud, Docker, Kubernetes, PostgreSQL, ElasticSearch
Jul 2023 - May 2024
11 months Leipzig, Germany
Data-Engineering Expert
Senec GmbH
- Data source integration (e.g. Business-Central, CRM, and different external API’s)
- Medallion Architecture
- Providing data for PowerBI and Data Analysts
- Python Development
- Big data workflow optimizations with PySpark/Databricks
- DBT Modelling
- End2End data solution
- Technologies: Git, PySpark, Pandas, Python, SQL, Azure/Databricks, ElasticSearch, DBT, Terraform, Airflow, Jupyter, Delta Tables, Airbyte, Power BI, CI/CD (Gitlab pipelines), K8s
Jan 2022 - Jun 2023
6 months Freiburg im Breisgau, Germany
Data-Science Expert
Virtualminds GmbH (includes Adex GmbH after acquiring)
- ETL
- Reporting
- Predictive Modeling (Classification, Regression etc.)
- API Development
- Classification models in predictive behavioral context: FeatureEngineering, ConfusionMatrix, LiftCharts
- Technologies: Git, CI/CD (Gitlab pipelines), PySpark, Pandas, Scikit-learn, Python, SQL, H2o, Docker, FastAPI , TensorFlow, Databricks, PostgreSQL, MongoDB, Terraform, AWS.
Oct 2022 - Dec 2022
3 months Berlin, Germany
Data-Science Expert
Mercedes-Benz.io GmbH (Budget leftover / consulting project)
- Idea generator for the internal data science team.
- Customer-Journey exploration with markov models and predictive analytics.
- Conceptualization and implementation: Feature store.
- Classification models (leads, clicks): FeatureEngineering, ConfusionMatrix, LiftCharts
- Technologies: Jira, Confluence, Git, Azure, Databricks, PySpark, Pandas, SQL, Scikit-learn, Seaborn, Matplotlib
Feb 2022 - Dec 2022
11 months Munich, Germany
Data-Science Expert
MSD Sharp & Dohme GmbH
- Mentoring.
- End2End data solution
- Developing new customer engagement KPIs.
- Handling complex data structures with SQL
- Conceptualization and implementation:
- Next Best Engagement and marketing cloud automation (E2E).
- Content recommendation with collaborative filtering.
- Impact equivalent optimization with genetic algorithm.
- Technologies: Linux, CI/CD (Gitlab pipelines), Git, Jira, Confluence, AWS, Terraform, Mlflow, SQL, Python Jupyter, PySpark, Pandas, Scikit-learn, Seaborn, Matplotlib, Lightfm.
Apr 2021 - Jan 2022
10 months Freiburg im Breisgau, Germany
Data-Science Expert
Virtualminds GmbH
- Idea provider (Mentoring) for data science problems in the internal data science team.
- Conceptualization and development:
- Forecast media inventory with a complex set of requirements and conditions (Regression).
- Develop Airflow pipelines.
- Handling complex data structures with SQL.
- Apply probabilistic data structure algorithms.
- Usage of fbprophet (time-series analysis) to estimate seasonality effects.
- Aggregation (ETL) of significant data volumes.
- Evaluation Databricks.
- POC in Video transcription.
- Technologies: Linux, Git, CI/CD (Gitlab pipelines), Jira, Confluence, SQL, AWS, GCP, Kubernetes, Spark, Jupyter on Kubernetes, Python, Jupyter, PySpark, Pandas, Scikit-Learn, Tensorflow, Numpy, Matplotlib, Seaborn, Plotly, Mlflow, Databricks, and Airflow.
Dec 2020 - Jan 2021
2 months Berlin, Germany
Data-Science Expert
The Adex GmbH
- Extend a predictive behavioral targeting system with multi-client capabilities (see former tasks in 11/2019).
- Classification models in a predictive behavioral context: FeatureEngineering, ConfusionMatrix, LiftCharts
- Technologies: Linux, Git, Python, PySpark, Pandas, Scikit- Learn, Numpy, Tensorflow/Keras, H2O.ai and MongoDB.
Oct 2020 - Nov 2020
2 months Munich, Germany
Data-Science Expert
Mediascale GmbH & Co. KG
- Conceptual design and develop a special data exporter for a third-party service provider.
- Technologies: Git, AWS S3, Python, Spark, and PostgreSQL.
Apr 2020 - Apr 2021
1 year 1 month Munich, Germany
Data-Science Expert
MSD Sharp & Dohme GmbH
- Conceptual design and develop a machine learning application (predictive analytics) to improve sales distribution in a competitive pharma market.
- Handling complex data structures with SQL.
- Make complex pharma data structures ready for machine learning issues.
- Apply machine learning algorithms, handle smart data, and consult in applied statistics/data science.
- Generate statistical analysis and charts with Jupyter Lab notebooks.
- Classification models in a pharma context: FeatureEngineering, ConfusionMatrix, LiftCharts
- Technologies: Git, Jira, Confluence, Jupyter, SQL, Veeva (CRM), AWS Redshift, Kedro, Mlflow, Python, Jupyter, Pandas, Scikit-Learn, Numpy, Matplotlib, Seaborn, and Plotly.
Jan 2020 - Mar 2020
3 months Munich, Germany
Backend-Developer
Appex5 GmbH
- Conception and development of a scalable Media-API for video and audio (e.g. YouTube).
- Technologies: Linux, Docker, python, ffmpeg, fastapi, AWS EC2, AWS Fargate, and YoutubeAPI V3.
Nov 2019 - Feb 2020
4 months Berlin, Germany
Data-Science Expert
The Adex GmbH
- Conceptual design and develop a machine learning application to predict online marketing segments in terms of online surf behavior.
- Apply machine learning algorithms, handle big data, consulting in applied data-science specifics.
- Aggregation (ETL) of big data volumes to predict large-scale customer segments to monetize data (DMP/DSP).
- Maintaining and monitoring since 02/2020.
- Technologies: Linux, Git, Jupyter, fastapi, Docker, Apache Spark, Python PySpark, Pandas, Scikit- Learn, Numpy, Tensorflow/Keras, MongoDB, PostgreSQL, H2O.ai, Tensorflow, Pytorch, and Tableau.
Jan 2019 - May 2020
1 year 5 months Munich, Germany
Data-Science and AWS Expert
Wetter.com GmbH
- Conceptual design, ETL and develop a machine learning application with a focus on weather effects in terms of sales forecasts.
- Evaluation of AWS Sagemaker in terms of scalability
- Generating large-scale machine learning models and predictions with AWS.
- End2End data solution.
- Regression models in retail context: FeatureEngineering, ModelEvaluation
- Technologies: Linux, Git ,CI/CD (Gitlab pipelines), Jupyter, Docker, Python, Scikit-Learn, Pandas, Tensorflow, Pytorch , AWS Lambda, AWS Glue, AWS S3, AWS Athena, AWS Sagemaker, AWS DynamoDB, AWS DocumentDB, AWS SQS, Serverless.com, and Tableau.
May 2018 - Dec 2019
8 months Munich, Germany
Data-Science Expert
Mediascale GmbH & Co. KG
- Conceptual design and develop a machine learning application to predict online marketing segments in terms of online surf behavior.
- Classification models in predictive behavioral context: FeatureEngineering, ConfusionMatrix, LiftCharts
- Apply machine learning algorithms, handle big data, consulting in applied data-science specifics.
- Aggregation (ETL) of big data volumes to predict large-scale customer segments to monetize data (DMP/DSP).
- Operations and monitoring since 12/2018.
- Technologies: Linux, Git, Jupyter, Docker, Apache Spark, Python, Pandas, Scikit- Learn, Numpy, Tensorflow/Keras, and H2O.ai.
Jan 2016 - Jul 2017
7 months Freiburg im Breisgau, Germany
Data Expert
Virtualminds GmbH
- Building an ETL app to handle big data and generate reports.
- Operations and monitoring since 07/2017.
- Technologies: Linux, Git, Jupyter, PostgreSQL, Python, and AWS.
Feb 2016 - Dec 2019
2 years 11 months Munich, Germany
Head of Data Science
DataXtrade GmbH
- Mentoring
- Analyzing data and predictive modeling with machine learning algorithms and handling big data.
- Working with DSP Technologies (Adform, The Trade Desk, Google DMP, Google DDP).
- Monitoring of data-driven processes.
- Collaboration and coordination with managing partners, software developers, and team members.
- Consulting clients and data partners in terms of marketing, data-driven, and analytical processes.
- Leading team members.
- Classification models in predictive behavioral context: FeatureEngineering, ConfusionMatrix, LiftCharts
- Technologies: MS Office, Linux, Git, Jupyter, Docker, Django, PostgreSQL, R, Apache Spark, Python, PySpark, Pandas, Scikit-Learn, Numpy, Tensorflow/Keras and MongoDB.
Jun 2015 - Feb 2016
9 months Unterföhring, Germany
Senior Data Scientist
ProSiebenSat.1 Digital & Adjacent GmbH
- TV campaign optimization, media attribution, segmentation, and impact modeling.
- Collaboration and coordination with different stakeholders and partners.
- Handling big data.
- Technologies: MS Office, Linux, PostgreSQL, Spark, R, Python, MongoDB, and Hadoop/Hive.
Apr 2013 - May 2015
2 years 2 months Munich, Germany
Head of Data Science
Smartstream.TV GmbH
- Development of a predictive behavioral targeting and analytical reporting backend with predictive analytics.
- Campaign optimizing.
- KPI development.
- Log file analytics and handling big data.
- Evaluation of external vendors (data and software products).
- Monitoring of data-driven processes.
- Collaboration and coordination with members from software development and ad management.
- Lead software developers for data-driven issues.
- Classification models in predictive behavioral context: FeatureEngineering, ConfusionMatrix, LiftCharts
- Technologies: MS Office, MySQL, R, Python, Git, Django, Weka, Redis, MongoDB, and Linux.
Jun 2012 - Jun 2012
1 month Zürich, Switzerland
Data Scientist
Anovum GmbH
- Consulting in churn- and predictive analytics.
- Technologies: MS Office, MySQL, R, Python, Weka, MongoDB, and Linux.
Mar 2012 - Mar 2013
1 year 1 month Düsseldorf, Germany
Data Scientist
GroupM Germany GmbH
- Development, analytics, and consulting with a focus on predictive behavioral targeting and predictive analytics.
- Technologies: MS Office, MySQL, R, Python, Weka, MongoDB, and Linux.
Feb 2012 - Dec 2013
11 months Munich, Germany
Data Scientist
Movad GmbH
- Conceptual design Development of a fingerprint tracking system.
- KPI development.
- Consulting in predictive analytics.
- Handling big data.
- Technologies: MS Office, MySQL, R, Django, Python, Redis, MongoDB, and Linux.
Oct 2008 - Sep 2011
3 years Karlsruhe, Germany
Chief Statistics
Eyewonder LLC
- Conceptual design and development of a predictive behavioral targeting system with predictive analytics.
- Campaign optimizing.
- KPI development.
- Monitoring of data-driven processes.
- Log file analytics and handling big data.
- Development of an internal analytical reporting application.
- Collaboration and coordination with members from software development and ad management.
- Leading up to 5 team members.
- Technologies: R, Weka, SPSS, Python, Bash, SQL, and Django/Highcharts.
Jun 2008 - Jul 2008
2 months Zürich, Switzerland
Data Scientist
Anovum GmbH
- Segmentation analytics.
- Technologies: SPSS and R.
Jan 2007 - Feb 2007
2 months Brühl, Germany
Conjoint Expert
Spiegel Institut Mannheim GmbH
- Training and consulting in conjoint methods.
- Technologies: Sawtooth.
Sep 2006 - Dec 2006
4 months Erlangen, Germany
Conjoint Expert
Siemens Medizintechnik
- Development of an adaptive conjoint design and study execution.
- Server hosting.
- Analytics (market simulation) and result aggregation.
- Technologies: Office, Apache, and Sawtooth.
May 2006 - Sep 2008
2 years 5 months Karlsruhe, Germany
Data Science Professional
United Internet AG
- Conceptual design and development of a predictive behavioral targeting system with predictive analytics.
- Processing and handling big data (ETL).
- Evaluation of data mining software.
- Preparation of the analytical results and presentation to internal clients.
- Collaboration and coordination with members from software development and ad management.
- Leading up to 4 team members.
- Technologies: R, SPSS, Insightful-Miner, Weka, Python, Linux, and Oracle.
Jul 2005 - Sep 2005
3 months Gütersloh, Germany
Conjoint Expert
Miele & Cie. KG
- Conjoint analytics with cost optimization and server hosting (conjoint survey).
- Technologies: MS Office, Apache, and Sawtooth.
Jun 2005 - Dec 2005
7 months Hamburg, Germany
Data Scientist
Euler-Hermes Kreditversicherungs AG
- Analytics, training, and consulting in predictive churn prevention.
- Technologies: Oracle and R.
Apr 2005 - Jun 2005
3 months Brussels, Belgium
Data Scientist
Dexia Banque
- Database marketing with predictive analytics and online surveys.
- Technologies: MS Office, SPSS, and Weka.
Jul 2004 - Sep 2004
3 months Zürich, Switzerland
Conjoint Expert
TDC-Switzerland AG Sunrise
- Conjoint analytics and segmentation.
- Technologies: MS Office, R, and Sawtooth.
Jan 2004 - Dec 2004
1 year Cologne, Germany
Conjoint Expert
Globalpark GmbH
- Consulting in conjoint analytics.
- Technologies: Sawtooth.
Sep 2003 - Jun 2010
6 years 10 months Berlin, Germany
Data Scientist
Questico AG
- ETL processing for data science objectives.
- Applying machine learning algorithms for activation, churn prevention, and re-activation for cost-optimization issues in direct marketing.
- Monitoring proactive direct marketing strategies.
- Collaboration and coordination with members of software development.
- Technologies: Oracle, SPSS, and R.
Aug 2003 - Dec 2004
5 months Berlin, Germany
Market Research Expert
Forsa GmbH
- Evaluation of online survey software products.
Sep 2002 - Jul 2003
11 months Berlin, Germany
Freelance Consultant / Statistician
- Founding a freelance business and handling first statistical consulting projects
- Technologies: MySQL, Oracle, SPSS and R.
Sep 2001 - Aug 2002
1 year Berlin, Germany
Statistician
Metrinomics GmbH (spin-off Modalis Inc.)
- Statistical analytics in market research (Conjoint, Customer-Satisfaction and Image surveys, etc.).
- Technologies: SPSS, Sawtooth, R, Excel-VBA, and MS Office.
Sep 2000 - Aug 2001
1 year Berlin, Germany
Manager-Statistics
Modalis Inc.
- Statistical analytics in market research (Conjoint, Customer-Satisfaction and Image surveys, etc.).
- Technologies: SPSS, R, Sawtooth, Excel-VBA, and MS Office.
Jan 1998 - Aug 2000
1 year 8 months Darmstadt, Germany
Junior Statistician
Consilium & Co. GmbH.
- Statistical analytics in market research.
- Technologies: SPSS, R, and MS Office.
Apr 1996 - Jan 1999
2 years 10 months Darmstadt, Germany
Student Assistant
TU Darmstadt
- Statistical analysis.
- Technologies: SPSS, MS Office.
Sep 1995 - Feb 1996
6 months Jülich, Germany
Student Assistant
Research Center Jülich/Programme Group Humans, Environment, Technology
- Statistical analysis and online research.
- Technologies: SPSS, MS Office.
Sydney, Australia
Data Science Consultant
Datalicious Pty Ltd
- Media Attribution.
Munich, Germany
Data Science Consultant
Movad GmbH
- Fingerprint Tracking.
Summary
As a data professional with over 20 years of experience, I have a passion for leveraging statistical methods and data analysis to create value. I have worked in various sectors, designing, developing, and supporting systems for predictive behavioral targeting. My expertise spans the entire data-driven application chain, from handling raw data to building cloud architecture, programming databases with SQL, developing applications, conducting predictive analytics, and creating dashboards. Furthermore, I’m working on concepts and strategies to deploy Large Language Model solutions fast and easy (i.e. Kubernetes).
Languages
German
Native
English
Advanced
Spanish
Intermediate
Education
Apr 1996 - May 2000
Technical University Darmstadt
Diploma, Statistics, Decision Theory, and Business Cycle Theory · Sociology · Darmstadt, Germany · 1.5 (very good)
Oct 1993 - Mar 1996
Philipps Universität Marburg
Diploma Sociology, Intermediate diploma · Sociology · Marburg, Germany
Aug 1989 - May 1992
Technisches Gymnasium Neuwied
Abitur, Electrical Engineering, Physics, and Social Science · Neuwied, Germany
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