Christian Schulz - Data-Science/Data-Engineering/AI-Engineering Expert

Ismaning, Deutschland

Erfahrungen

Jan. 2025 - Bis heute

6 Monaten

Partner 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.

Mai 2024 - Bis heute

1 Jahr 2 Monaten

Data-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 - Dez. 2023

2 Monaten

Köln, Deutschland

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

Juli 2023 - Mai 2024

11 Monaten

Leipzig, Deutschland

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 - Juni 2023

6 Monaten

Freiburg im Breisgau, Deutschland

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.

Okt. 2022 - Dez. 2022

3 Monaten

Berlin, Deutschland

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 - Dez. 2022

11 Monaten

München, Deutschland

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 Monaten

Freiburg im Breisgau, Deutschland

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.

Dez. 2020 - Jan. 2021

2 Monaten

Berlin, Deutschland

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.

Okt. 2020 - Nov. 2020

2 Monaten

München, Deutschland

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 Jahr 1 Monate

München, Deutschland

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 - März 2020

3 Monaten

München, Deutschland

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 Monaten

Berlin, Deutschland

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 - Mai 2020

1 Jahr 5 Monaten

München, Deutschland

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.

Mai 2018 - Dez. 2019

8 Monaten

München, Deutschland

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 - Juli 2017

7 Monaten

Freiburg im Breisgau, Deutschland

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 - Dez. 2019

2 Jahren 11 Monaten

München, Deutschland

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.

Juni 2015 - Feb. 2016

9 Monaten

Unterföhring, Deutschland

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 - Mai 2015

2 Jahren 2 Monaten

München, Deutschland

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.

Juni 2012 - Juni 2012

1 Monate

Zürich, Schweiz

Data Scientist

Anovum GmbH

Consulting in churn- and predictive analytics.
Technologies: MS Office, MySQL, R, Python, Weka, MongoDB, and Linux.

März 2012 - März 2013

1 Jahr 1 Monate

Düsseldorf, Deutschland

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 - Dez. 2013

11 Monaten

München, Deutschland

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.

Okt. 2008 - Sept. 2011

3 Jahren

Karlsruhe, Deutschland

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.

Juni 2008 - Juli 2008

2 Monaten

Zürich, Schweiz

Data Scientist

Anovum GmbH

Segmentation analytics.
Technologies: SPSS and R.

Jan. 2007 - Feb. 2007

2 Monaten

Brühl, Deutschland

Conjoint Expert

Spiegel Institut Mannheim GmbH

Training and consulting in conjoint methods.
Technologies: Sawtooth.

Sept. 2006 - Dez. 2006

4 Monaten

Erlangen, Deutschland

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.

Mai 2006 - Sept. 2008

2 Jahren 5 Monaten

Karlsruhe, Deutschland

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.

Juli 2005 - Sept. 2005

3 Monaten

Gütersloh, Deutschland

Conjoint Expert

Miele & Cie. KG

Conjoint analytics with cost optimization and server hosting (conjoint survey).
Technologies: MS Office, Apache, and Sawtooth.

Juni 2005 - Dez. 2005

7 Monaten

Hamburg, Deutschland

Data Scientist

Euler-Hermes Kreditversicherungs AG

Analytics, training, and consulting in predictive churn prevention.
Technologies: Oracle and R.

Apr. 2005 - Juni 2005

3 Monaten

Brüssel, Belgien

Data Scientist

Dexia Banque

Database marketing with predictive analytics and online surveys.
Technologies: MS Office, SPSS, and Weka.

Juli 2004 - Sept. 2004

3 Monaten

Zürich, Schweiz

Conjoint Expert

TDC-Switzerland AG Sunrise

Conjoint analytics and segmentation.
Technologies: MS Office, R, and Sawtooth.

Jan. 2004 - Dez. 2004

1 Jahr

Köln, Deutschland

Conjoint Expert

Globalpark GmbH

Consulting in conjoint analytics.
Technologies: Sawtooth.

Sept. 2003 - Juni 2010

6 Jahren 10 Monaten

Berlin, Deutschland

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 - Dez. 2004

5 Monaten

Berlin, Deutschland

Market Research Expert

Forsa GmbH

Evaluation of online survey software products.

Sept. 2002 - Juli 2003

11 Monaten

Berlin, Deutschland

Freelance Consultant / Statistician

Founding a freelance business and handling first statistical consulting projects
Technologies: MySQL, Oracle, SPSS and R.

Sept. 2001 - Aug. 2002

1 Jahr

Berlin, Deutschland

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.

Sept. 2000 - Aug. 2001

1 Jahr

Berlin, Deutschland

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 Jahr 8 Monaten

Darmstadt, Deutschland

Junior Statistician

Consilium & Co. GmbH.

Statistical analytics in market research.
Technologies: SPSS, R, and MS Office.

Apr. 1996 - Jan. 1999

2 Jahren 10 Monaten

Darmstadt, Deutschland

Student Assistant

TU Darmstadt

Statistical analysis.
Technologies: SPSS, MS Office.

Sept. 1995 - Feb. 1996

6 Monaten

Jülich, Deutschland

Student Assistant

Research Center Jülich/Programme Group Humans, Environment, Technology

Statistical analysis and online research.
Technologies: SPSS, MS Office.

Sydney, Australien

Data Science Consultant

Datalicious Pty Ltd

Media Attribution.

München, Deutschland

Data Science Consultant

Movad GmbH

Fingerprint Tracking.

Zusammenfassung

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).

Sprachen

Deutsch

Muttersprache

Englisch

Verhandlungssicher

Spanisch

Fortgeschritten

Ausbildung

Apr. 1996 - Mai 2000

Technical University Darmstadt

Diploma, Statistics, Decision Theory, and Business Cycle Theory · Sociology · Darmstadt, Deutschland · 1.5 (very good)

Okt. 1993 - März 1996

Philipps Universität Marburg

Diploma Sociology, Intermediate diploma · Sociology · Marburg, Deutschland

Aug. 1989 - Mai 1992