Initiated development of ICE-NG (Next Generation) on React and FastAPI (Python) running on Linux servers, engineering a microservice-ready backend with a PostgreSQL-backed data model that applies Weibull distribution and Monte Carlo simulation across large datasets to model engine part failure timelines and generate profit-maximising cost structures across maintenance cycles.

Authored end-to-end technical documentation for ICE3 (Internal Cost Estimator) using Sphinx and the MyST plugin with full offline support to satisfy compliance requirements.

Designed a config-driven multi-tenant data onboarding and ETL/migration system (Node.js, TypeScript, Python, Terraform) that cut tenant onboarding from a full day to under 5 minutes, orchestrating cloud provisioning and PostgreSQL data migrations with Redis-cached tenant configs and secrets.

Built and scaled RESTful APIs and GraphQL services across multi-tenant environments serving 20k+ users in 45+ countries, treating APIs as products with OAuth 2.0, RBAC, and rate limiting to ensure security and operational observability at scale.

Implemented field-level encryption and RBAC least-privilege access with detailed audit logging, supporting successful third-party compliance audits; migrated real-time messaging to an event-driven Socket.io architecture, cutting latency 10% for 20k+ concurrent users.

Maintained 85%+ test coverage (Jest, React Testing Library, Playwright) in GitHub Actions CI/CD pipelines for zero-downtime releases, while leading React Native mobile development end-to-end on Connect.