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Sonja ArmbrusterSA

Sonja Armbruster

Senior Data Analyst & Tableau Specialist

€680/day
Frankfurt am Main, DE
15+ years

Average response time: 1 hour

About Sonja

  • German

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • CLAAS Group
    Senior Data Analyst & Tableau Specialist
    March 2024 - December 2025 (1 year and 9 months)
    Challenge: 9 isolated marketing data sources without common identifiers; data flowing unfiltered directly into Tableau.
    • • Built marketing data platform in Databricks (Medallion Architecture)
    • • Processing 6M+ records daily from 7 digital marketing sources across 20+ countries
    • • Automated ETL/ELT pipelines (PySpark, Spark SQL) with 1-2 minute incremental runs
    • • Consolidated Funnel.io, Matomo & Salesforce Marketing Cloud data
    • • End-to-end Tableau dashboards for Customer Journey & Executive KPIs Tools: Databricks
    ◦ • PySpark
    ◦ • SQL
    ◦ • Tableau Server
    ◦ • Python
    ◦ • Funnel.io API
    ◦ • Git
  • Groz-Beckert KG
    Data Engineer & Analyst
    January 2022 - February 2024 (2 years and 1 month)
    Challenge: 10M heterogeneous IoT sensor records without structure or quality controls; need to identify failure patterns.
    • • Developed ML models (Random Forest, XGBoost, Clustering) for Predictive Maintenance
    • • Achieved 10% reduction in unplanned downtime
    • • Built IoT data pipelines on AWS (Python, SQL, S3)
    • • Created reporting & visualization for management and production teams Tools: Python
    ◦ • SQL
    ◦ • AWS S3
    ◦ • Tableau
    ◦ • Git
  • AstraZeneca
    Business Intelligence Analyst
    June 2022 - December 2023 (1 year and 6 months)
    Challenge: 20+ manual Excel reports daily without automation or standardization.
    • • Automated sales & audience analytics (SQL, Python)
    • • Built management dashboards in MicroStrategy
    • • Standardized reporting workflows improving operational efficiency

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Education

  • MBA
    Goethe University
    MBA
  • Generative AI with Large Language Models (DeepLearning.AI)
    Generative AI with Large Language Models (DeepLearning.AI)

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