API

A NestJS/MongoDB financial-system backend - users, accounts, transactions, role-based access - with unit and e2e tests, Sentry/Loggly observability, and a TypeDoc API reference deployed as its own documentation site.

A consumer-lifestyle API built security-first: XACML-style policy decision/enforcement middleware, granular permission enums, ten validated auth DTOs, privacy-settings modeling, and Loggly-audited access decisions - the trust layer before any feature.