German Arngold

Experience

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  Raiffeisen Bank International AG

  Oct 2022 - Mar 2023

  Data Analyst

  1. Developed and maintained advanced financial performance reports for various bank departments using Qlik Sense and Power BI, identifying key data dynamics and patterns 2. Provided interactive dashboards for senior management to facilitate strategic decision-making3. Enhanced data quality and integrity by executing sophisticated testing protocols and refining data-cleaning pipelines 4. Optimized reporting structures, improving internal process efficiency, accuracy and speed of report generation5. Created user guidelines for various banking software using Confluence Show less

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  PwC

  Apr 2023 - Jun 2024

  Technology Consultant

  1. Back-end developer for Big Data using Spark/Python API (Pyspark) of Palantir Foundry and other2. Achieved successful data integration and pipeline development for one of the biggest European banks, producing a fully automatized reporting pipeline to meet rigorous requirements of ECB, which allowed bank to save up to 70% on maintenance compared to manual reporting 3. Performed functional and technical analysis of sensitive and complex data of various nature4. Created sophisticated data models based on different requirements, including error handling, code repositories, data lineage, scheduling and pipeline maintenance 5. Created an intuitive ontology to eliminate data issues and redundant processes that have been detected from data quality testing6. Applied advanced SQL and PySpark queries to conduct detailed data analyses and extract relevant data from large, complex datasets7. Optimized existing workflows for faster and more reliable performance 8. Integrated complex Data Quality and Data Expectation checks 9. Developed documentation and transformation logic for data pipelines Show less