This role is designed for someone who understands how securities lending desks operate, can speak the language of traders, and can turn market structure, inventory, client demand, collateral, pricing, and P&L dynamics into practical analytics that improve decision-making. As a Senior Manager, Securities Lending Quant, you will serve as a senior desk-facing quantitative expert within the Treasury Modeling department, focused on securities lending, prime brokerage, margin lending, and equity finance.