Langning Zhang

You can build React/TypeScript frontends with Suspense and TanStack Router, structure Node.js/Express microservices with layered architecture, design REST endpoints with pagination, test authenticated routes with cookie-based mock auth, add Sentry v8 error tracking, and run pre-completion verification with tests, lint, and type checks.

Full-stack engineers working on React/TypeScript frontends and Node.js/Express/Prisma backends. They suit developers creating routes, controllers, and services, reviewing security-sensitive changes, preparing git commits, or producing source-backed technical research before implementation.

The verification-loop skill runs focused validation such as tests, lint, type checks, and manual sanity checks before marking work complete. The performance skill diagnoses slowness and reduces context overhead, while search-first checks for existing solutions before adding dependencies or writing new helpers.

Backend skills assume Node.js, Express, TypeScript, Prisma, Zod, and Sentry v8. Frontend skills assume React with MUI v7, TanStack Router, and useSuspenseQuery data fetching. Route testing uses cookie-based authentication with a test-auth-route.js mock authentication pattern.

Yes. The api-design skill covers REST endpoint design, payloads, status codes, filtering, sorting, and pagination. The security-review skill guides review of authentication, secrets, permissions, and external input handling to prevent security regressions in code changes.