I Moved From Quant Finance to AdTech: Here’s What Surprised Me the Most

I spent several years as a Quant Researcher in the hedge fund space, developing medium-frequency systematic trading strategies. Today, I am a Data Scientist at Teads, working on prediction algorithms for online ads. From using direct IDs as features to retraining models every four hours, I encountered a lot of surprising methodological differences when I made the transition.