NinjaTrader - Staff Product Data Analyst, Fraud & Surveillance

• NinjaTrader's Trade Surveillance team is being built to protect the integrity of our markets and our partners' programs by catching fraud and abuse before it costs anyone money. As a Staff Product Data Analyst, you'll own building and maintaining the in-house detection layer — the models and rules that flag wash trading, collusion, and eval/prop-firm fraud across our trading data — and the partner-facing surveillance reports built on top of them. Engineering builds the data pipeline; you define what runs through it, applying market-structure judgment to turn raw fills into defensible fraud findings that partners and leadership can act on. • Own and evolve the detection models and rules that flag market abuse — wash trading, hedging and reverse trading, collusion and coordinated accounts — across our trading data • Own partner-facing surveillance reporting end to end, starting with standardized end-of-day reports and evolving toward real-time monitoring • Work directly with eval and prop-firm partners to validate true and false positives, calibrate detection quality, and tune thresholds and rules • Collaborate with partners on custom reporting and solution feasibility for partner requests • Translate fraud patterns into precise, tunable detection logic across matching criteria, hold-time thresholds, recurrence windows, and P&L severity scoring • Maintain data quality and hygiene across the surveillance data that feeds detection and reporting • Investigate flagged cases end to end and produce clear, evidence-backed findings that partners and internal leadership can act on • Reduce false positives continuously and surface new fraud patterns as bad actors adapt