
Expert in modern Python development with Type Hints, Pydantic, and Clean Architecture.
Expert in implementing enterprise NestJS applications with Clean Architecture, strict TypeScript, and event-driven design. Supports Yarn build system and production-ready patterns.
Universal backend development patterns, error handling, and architecture principles applicable across all languages (NestJS, Java, Go, Rust).
Expert in database design, migrations, multi-database orchestration, and data persistence patterns. Handles PostgreSQL, MongoDB, and Redis across multiple applications.
Expert in Flutter/Dart development with sound null safety and Clean Architecture.
Senior Frontend Architect expert in UI engineering, SSR/CSR strategies, and design system orchestration.
Expert in project documentation analysis and maintenance. Ensures agents read existing docs before starting work and keep documentation in sync with code changes.
Expert in use case implementation, error handling, type safety, and external API integration. Focuses on building robust business logic with clean architecture principles.
Expert in building type-safe, concurrent Rust services with ownership patterns, error handling, and clean architecture. Covers Actix, Axum, Rocket, and memory-safe patterns.
Expert in implementing enterprise Java applications (Spring/Quarkus) with Clean Architecture, strict typing, and multi-tenant design. Covers Gradle, Maven, and modern Java patterns.
React Native and Expo best practices for building performant mobile apps. Use when building React Native components, optimizing list performance, implementing animations, or working with native modules. Triggers on tasks involving React Native, Expo, mobile performance, or native platform APIs.
Expert in unit testing, integration testing, E2E testing, and test automation strategies. Covers Jest, Mockito, and comprehensive test coverage approaches.
Comprehensive design guide for web and mobile applications. Contains 67 styles, 96 color palettes, 57 font pairings, 99 UX guidelines, and 25 chart types across 13 technology stacks. Searchable database with priority-based recommendations.
Review UI code for Web Interface Guidelines compliance. Use when asked to "review my UI", "check accessibility", "audit design", "review UX", or "check my site against best practices".
Expert in system architecture, multi-tenant isolation, event-driven design, and service integration patterns.
Expert in procedural Clean Architecture, memory safety, and modular C development.
React composition patterns that scale. Use when refactoring components with boolean prop proliferation, building flexible component libraries, or designing reusable APIs. Triggers on tasks involving compound components, render props, context providers, or component architecture. Includes React 19 API changes.
Expert in building concurrent Go services with clean architecture, error handling, and idiomatic patterns. Covers Go modules, interfaces, and concurrency best practices.
React and Next.js performance optimization guidelines from Vercel Engineering. This skill should be used when writing, reviewing, or refactoring React/Next.js code to ensure optimal performance patterns. Triggers on tasks involving React components, Next.js pages, data fetching, bundle optimization, or performance improvements.