Thomas | Finance de Marché on Instagram: "1. Python as your core toolkit Banks expect you to handle large datasets, vectorize operations, and write clean modular scripts. If you can build a simple pricer, simulation engine, or risk tool in Python, you’re already far ahead of most applicants. 2. Time-series intuition over theory What matters isn’t ARIMA for its own sake, but your ability to recognize volatility clustering, fat tails, mean reversion, and regime shifts. Understanding how to clean,