1.121520 Oct 2026-2.9% over the period
Drag or use the arrow keys to rotate.
14 Oct 2025Source: European Central Bank, fetched when the site is built
The same ECB data feed that my Data Contract Observatory monitors.
Power BI dashboards on large machine datasets in Snowflake, built at Sanofi for management and their teams.
Twelve public analyses with code, data and their limits stated, from responsible AI to data observability.
Lead Teacher at Le Wagon: SQL, Python and analytics for 100+ students.
Three analyses closest to data and AI work in finance. Each links to the write-up and the code.
Data engineering
A data pipeline can keep running while its meaning changes. This observatory records the difference.
Tracks how a pipeline's meaning shifts over time, using a live ECB data feed checked against a frozen consumer contract.
Responsible AI
A model that looks fair can quietly stop being fair. Here's how to catch it.
Stress-tests a fairness measurement against label noise, measurement error and small samples.
Climate data
Is Frankfurt actually warmer than the countryside around it? We measured it.
Estimates Frankfurt's urban heat island from decades of paired weather-station records, reported with a confidence interval.
Oct 2024 to now
May 2026 to now
Oct 2024 to Aug 2028
Business Information Management, dual
May to Aug 2024
Data Analytics bootcamp
Oct 2021 to Mar 2024
Biology studies, not completed
Each group comes with what I have actually done with it.
Power BI · Snowflake · Excel · Power Platform
10+ dashboards used by about 50 people at Sanofi, on machine data recorded every 1 to 2 seconds.
SQL · Python
Taught to 100+ students at Le Wagon, and used in the analyses on Lab Notes.
TypeScript · Rust and WebAssembly
Interactive labs for my public analyses, including a Rust and WebAssembly numerical lab.
Finance is the next chapter. None of this has started yet, and I would rather say so.
Accounting fundamentals, financial markets and valuation basics, using free material first. Bloomberg Market Concepts and two investment-banking simulations follow.
Sanofi against its peers: trading comparables, a discounted cash flow, and a statistical look at what drives valuation multiples. Not started.
Question answering over annual reports and earnings material, with an evaluation set that measures answer accuracy. Not started.
If you hire for data, AI or finance analytics, or want to compare notes, write to me.