Hello

I'm Jeroen

Senior Data Analyst and Power BI Developer

About Me

As a driven data analyst and Power BI developer, I believe that teamwork, organization, and flexibility are the key ingredients for success. My core skills include data analysis, data visualization engineering, and data discovery and modeling, using AI where it has its place. While business decisions can often be based on gut feeling, why not back them up with data?

Data only drives action when it connects with human cognition. I design data visualizations based on cognitive design principles, making insights instinctual, decisions faster, and impact bigger.

Power BI Desktop Power BI Service Power Query M DAX SQL Microsoft Fabric Databricks Python DBT Power Automate Power Apps Azure DevOps Visual Code

Projects

01

Flow Ratio KPI Gauge Visual

A bespoke HTML/CSS KPI visual within Power BI for real-time backlog health monitoring. Translates the Flow Ratio into an intuitive color-coded gauge with week-over-week trends.

Power BIDAXHTMLCSS
02

Chocolate Consumption vs. Nobel Prize Winners

Does eating chocolate make a country smarter? Exploring the famous Messerli (2012) spurious correlation (r = 0.88) between chocolate consumption and Nobel Prizes per capita.

PythonPandasMatplotlibSciPy
03

Las Vegas Weddings vs. Polar Bear Activity

Do weddings in Vegas activate polar bears? A monthly analysis showing how seasonal confounding creates a near-perfect (r = 0.95) but completely meaningless correlation.

PythonPandasMatplotlibSciPy

Experience

Senior Data Analyst

Accounting and Consulting Company

2023 - Present
  • Responsible for data visualization, data modeling, and improving data accessibility across the organization
  • Build interactive dashboards, reports, apps, and efficient ETL processes to drive data-driven decision-making
  • Deliver management information from board level through all management and operational layers
  • Administer Power BI tenant settings as Power BI Admin
  • Provide monthly training sessions on Power BI feature updates for fellow analysts

Data Analyst & Visualist

High-Speed Packaging Systems Manufacturer

2020 - 2023
  • Performed data analysis, data modeling, data source integration, and data visualization in Power BI
  • Served as sparring partner for data challenges in multidisciplinary international teams
  • Managed Power BI administration and built reporting packs for Directors, Sales, Procurement, and Operations across all continents

Data Analyst Supply Chain

Marine Environmental Solutions Provider

2015 - 2020
  • Performed data analysis, data modeling, data source integration, and data visualization in Power BI
  • Acted as sparring partner for data-related challenges within the supply chain domain

Education

Fabric Analytics Engineer DP-600

Microsoft

2026

    Power BI Data Analyst Associate PL-300

    Microsoft

    2023

      ITIL Foundation v3 - IT Service Management

      ITIL

      2012

        PRINCE2 Practitioner - Project Management

        PRINCE2

        2010

          PRINCE2 Foundation - Project Management

          PRINCE2

          2009

            Internal Auditing - ISO 19011:2002 / ISO 9001

            NEN-EN-ISO

            2009

              Certified Internet Web Professional

              Centipede

              1999 - 2003

                Gymnasium

                Stedelijk Gymnasium

                1992 - 1998

                  Tell your Agent

                  Not sure if I'm a fit? Paste this into your AI / coding agent — it fetches my profile and tells you whether I can help.

                  Fetch https://geronimoanalytics.nl/agents and read it as context about Jeroen — a Senior Data Analyst and Power BI Developer.


                  First, ask me about my data challenge or what I'm looking for, then wait for my answer. Then assess whether Jeroen would be a good fit.

                  ChatGPT Claude Perplexity