About Sonja
German
Native or bilingual
English
Fluent
Experience
- CLAAS GroupSenior Data Analyst & Tableau SpecialistMarch 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 KGData Engineer & AnalystJanuary 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
- AstraZenecaBusiness Intelligence AnalystJune 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
- MBAGoethe UniversityMBA
- Generative AI with Large Language Models (DeepLearning.AI)Generative AI with Large Language Models (DeepLearning.AI)