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André Petersen

André Petersen

Student Worker

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  • Timeline

  • About me

    Data Engineer at GP JOULE CONNECT

  • Education

    • University of Oklahoma

      2014 - 2015
      Meteorology

      Exchange Student with a focus on weather forecasting/synoptic analyses and statistics

    • University of Hamburg

      2012 - 2015
      Bachelor of Science - BS

      Forecasting nocturnal temperature drops in the nighttime using analogues in the past (~ nearest neighbor forecasts)

    • University of Hamburg

      2015 - 2017
      Master's degree Meteorology

      Using state-of-the-art machine learning algorithms to forecast wind gusts in Hamburg (Random Forests, Support Vector Classifier, Logistic Regression, Lasso)

  • Experience

    • Meteorological Institute – University of Hamburg

      Jan 2014 - Jan 2016
      Student Worker

      Evaluation of atmospheric (mesoscale) models with Python

    • Meteoservice weather research

      Aug 2015 - Sept 2015
      Intern

      Visualization of MOS (model output statistics) forecasts using Python

    • Suntrace GmbH

      Jun 2016 - Nov 2019

      - Data Analysis, Quality Checks and Visualization using Python- Solar Forecasting Consulting- Software Development (Python)- Automating Data Processing and PDF generation using Python and Latex- Participation in an international benchmarking of adapting satellite-derived data sets to ground measurements using machine learning algorithms - Development of a Python API to a HDF5 database- Data Analysis- Solar Ressource Assessments

      • Data Analyst / Meteorologist

        Dec 2017 - Nov 2019

      • Student Worker

        Jun 2016 - Dec 2017

    • Parship Group

      Dec 2019 - Nov 2023
      Data Engineer

      Replaced legacy extraction scripts with a unified Python framework, making data ingestion simpler and more reliable.Introduced AWS Managed Workflows for Apache Airflow to orchestrate and monitor pipelines end-to-end.Processed user-interface event data in Hadoop / Apache Impala to guide product decisions and improve conversion.Led the migration from an on-premise Oracle data warehouse to Snowflake, coordinating data transfer, validation, and cut-over.Took ownership of data processing at weekends and on public holidays through an on-call rota, ensuring round-the-clock pipeline stability. Show less

    • GP JOULE CONNECT

      Dec 2023 - now
      Data Engineer

      Automated key data workflows, replacing manual Excel tasks and reducing routine effort across departments.Designed and rolled out a Snowflake cloud data-warehouse on AWS (using dbt for data transformation), integrating EV-charging backend logs with ERP, CRM and other sources into one consistent dataset.Delivered well-structured data models that underpin dashboards and on-demand analyses.Led a data-quality initiative: located the most severe issues, introduced automated checks and alerts, and helped teams raise completeness and accuracy.Acted as Product Owner and link between technology and business, translating complex processes into sustainable technical solutions. Show less

  • Licenses & Certifications