Applied AI & ML Lead [Multiple Positions Available]
Summary
Design and build ML models to detect fraud and assess risk using graph-based features and GNNs on transaction graphs.
DESCRIPTION: Duties: Design and develop advanced machine learning (ML) models to detect fraudulent merchant activity and assess payer risk. Engineer graph-based features and embeddings by constructing transaction-level payment graphs across cross-functional teams and applying Graph Neural Networks (GNN) to generate features for fraud detection models. Extract and compute graph connectivity metrics such as PageRank, centrality scores, community detection and label propagation algorithms to ident…