Citadel's October 15 careers account describes Maria Stoica's internship in its London Model Validation team. Her project separated genuine market behavior from anomalies and frictions in large end-of-day datasets, aiming to improve information entering end-of-day price systems. Stoica's doctoral work concerns AI safety and validating AI behavior.
She experimented with AI coding tools and APIs to classify information arriving from different parts of the firm and automate previously manual tasks. She and Jie Ding, who leads the Model Control and Governance Group, reviewed findings, implementation choices and which results warranted further investigation, alongside model-validation specialists, researchers and engineers. She also consolidated information about tools, APIs and visualization platforms for colleagues.
The firm-produced account reports exploratory work and specialist review, without establishing autonomous price setting, production deployment or an investment result. It concerns Citadel's hedge-fund business, separate from Citadel Securities. Read the profile.