cjharmath
31 verified skills
postgres-patterns
PostgreSQL patterns for reviewing migrations and writing efficient queries. Use when reviewing Alembic migrations, optimizing queries, or debugging database issues.
development
rn-async-patterns
Async/await correctness in React Native with Zustand. Use when debugging race conditions, missing awaits, floating promises, or async timing issues in Expo/React Native apps.
development
react-async-patterns
Async/await correctness in React with Zustand. Use when debugging race conditions, missing awaits, floating promises, or async timing issues. Works for both React web and React Native.
development
react-observability
Logging, error messages, and debugging patterns for React. Use when adding logging, designing error messages, debugging production issues, or improving code observability. Works for both React web and React Native.
development
rn-performance
Performance optimization for React Native. Use when optimizing lists, preventing re-renders, memoizing components, or debugging performance issues in Expo/React Native apps.
development
web-auth
Authentication patterns for React web applications. Use when implementing login flows, OAuth, JWT handling, session management, or protected routes in React web apps.
development
py-observability
Observability patterns for Python backends. Use when adding logging, metrics, tracing, or debugging production issues.
development
react-state-flows
Complex multi-step operations in React. Use when implementing flows with multiple async steps, state machine patterns, or debugging flow ordering issues. Works for both React web and React Native.
development
rn-observability
Logging, error messages, and debugging patterns for React Native. Use when adding logging, designing error messages, debugging production issues, or improving code observability.
development
web-navigation
Navigation and routing patterns for React web applications. Use when implementing React Router, Next.js routing, deep links, or handling navigation state.
development
py-pydantic-patterns
Pydantic v2 patterns for validation and serialization. Use when creating schemas, validating data, or working with request/response models.
data-ai
expo-build-deploy
Building and deploying Expo React Native apps to iOS. Use when configuring EAS Build, submitting to TestFlight, App Store deployment, managing certificates, or troubleshooting build issues.
development
py-async-patterns
Async/await patterns for FastAPI and SQLAlchemy. Use when working with async code, database sessions, concurrent operations, or debugging async issues in Python.
development
postgres-performance
High-performance PostgreSQL patterns. Use when optimizing queries, designing for scale, or debugging performance issues.
development
py-fastapi-patterns
FastAPI patterns for API design. Use when creating endpoints, handling dependencies, error handling, or working with OpenAPI schemas.
development
py-sqlmodel-patterns
SQLModel and async SQLAlchemy patterns. Use when working with database models, queries, relationships, or debugging ORM issues.
development
py-testing-async
Async testing patterns with pytest-asyncio. Use when writing tests, mocking async code, testing database operations, or debugging test failures.
development
react-performance
Performance optimization for React web applications. Use when optimizing renders, implementing virtualization, memoizing components, or debugging performance issues.
development
react-testing
Testing patterns for React with Jest and React Testing Library. Use when writing tests, mocking modules, testing Zustand stores, or debugging test failures in React web applications.
development
react-zustand-patterns
Zustand state management patterns for React. Use when working with Zustand stores, debugging state timing issues, or implementing async actions. Works for both React web and React Native.
development
rn-auth
React Native authentication patterns for Expo apps. Use when implementing login flows, Google/Apple sign-in, token management, session handling, or debugging auth issues in Expo/React Native.
development
rn-native-features
Native iOS features in Expo React Native apps. Use when implementing camera, push notifications, haptics, permissions, device sensors, or other native APIs in Expo.
development
rn-navigation
Expo Router navigation patterns for React Native. Use when implementing navigation, routing, deep links, tab bars, modals, or handling navigation state in Expo apps.
development
rn-state-flows
Complex multi-step operations in React Native. Use when implementing flows with multiple async steps, state machine patterns, or debugging flow ordering issues.
development
rn-styling
Styling patterns for React Native with NativeWind and BrandColors. Use when working with styles, themes, colors, responsive layouts, or platform-specific UI in Expo/React Native.
development
rn-testing
Testing patterns for React Native with Jest and React Native Testing Library. Use when writing tests, mocking Expo modules, testing Zustand stores, or debugging test failures.
development
rn-zustand-patterns
Zustand state management patterns for React Native. Use when working with Zustand stores, debugging state timing issues, or implementing async actions in Zustand.
development
web-build-deploy
Building and deploying React web applications. Use when configuring builds, deploying to Vercel/Netlify, setting up CI/CD, Docker, or managing environments.
development
web-styling
Styling patterns for React web applications. Use when working with Tailwind CSS, CSS Modules, theming, responsive design, or component styling.
development
py-alembic-patterns
Alembic migration patterns for PostgreSQL. Use when creating migrations, reviewing autogenerated migrations, or handling schema changes safely.
databases
expo-api-audit
Comprehensive audit of Expo/React Native app API integration layer. Use when asked to: (1) Review API interactions, auth handling, or token management, (2) Find hardcoded data or screens bypassing API, (3) Verify user interactions properly sync to backend, (4) Analyze offline behavior and caching, (5) Audit Orval/OpenAPI code generation, (6) Check for API security issues. Supports TanStack Query, Zustand, axios, Expo Router, expo-secure-store, and expo-constants patterns.
development