Data · AI / ML · Full-stack
LedIq
Mainframe banking replica on IBM z/OS with real-time ML risk scoring.
LedIq is a functional replica of a top-5 banking system built on an IBM z/OS mainframe using zCX. It implements core mainframe components with COBOL, JCL, SQL, and REXX, and integrates a Node.js frontend with a FastAPI backend for real-time credit risk evaluation.
COBOLIBM z/OSJCLREXXNode.jsFastAPIXGBoostONNXSHAPDb2
Key features
- Built on IBM z/OS mainframe using zCX with COBOL, JCL, SQL, and REXX
- Node.js frontend with FastAPI backend for real-time operations
- ONNX-hosted XGBoost model for real-time credit risk scoring
- SHAP explainability for model interpretability
- IBM Db2 stores predictions and feature-level explanations for auditability
Context
Developed with the Western Cyber Society at Western University, demonstrating the integration of legacy mainframe technologies with modern web development and AI/ML.