Browse Skills

Expert guidance for designing production-grade Zod schemas with TypeScript type inference, schema composition, error handling, and full-stack integration patterns.

Identifies code smells and applies systematic refactoring patterns from Martin Fowler's catalog. Guides safe refactoring with test coverage, legacy code strategies, and incremental improvement plans that preserve behavior while improving design.

Builds WCAG 2.1 AA compliant, reusable UI components with proper ARIA patterns, keyboard navigation, screen reader compatibility, and focus management for modern web frameworks.

Comprehensive Supabase guidance covering PostgreSQL database, authentication, Row Level Security, real-time subscriptions, storage, Edge Functions, and client SDK for building full-stack applications.

Build automated accessibility testing pipelines that catch WCAG violations in CI/CD, combining axe-core, Playwright, and Lighthouse for continuous compliance monitoring.

Conducts thorough, constructive code reviews focusing on readability, maintainability, security, performance, and SOLID principles. Delivers actionable feedback organized by severity.

Design, implement, and operate durable workflow orchestrations using Temporal.io for reliable distributed system coordination.

Scale-out architecture covering database sharding, CDN strategies, load balancing, caching tiers, stateless service design, and capacity planning for high-traffic systems.

Comprehensive Next.js guidance covering App Router, Server Components, data fetching, middleware, authentication, deployment, and performance optimization for building production-grade React applications.

Comprehensive API design guidance covering REST, GraphQL, gRPC, WebSocket APIs, versioning strategies, authentication patterns, rate limiting, documentation, and developer experience for building APIs that developers love.

Expert advisor for React state management — helps you choose between Zustand, Jotai, Redux Toolkit, Context API, and XState based on your application's specific requirements. Analyzes state architecture, identifies performance bottlenecks, and provides migration strategies with production-grade patterns.

Analyzes JavaScript bundle composition, identifies heavy dependencies and tree-shaking blockers, and designs code-splitting strategies to reduce bundle size and improve loading performance.

Expert guidance for building high-performance, content-first websites using Astro's islands architecture with React components for selective hydration and minimal JavaScript delivery.

Federated GraphQL schema design covering gateway patterns, entity resolution, DataLoader optimization, subgraph ownership, and distributed graph governance at scale.

Expert in building reusable, framework-agnostic UI components using Web Component standards (Custom Elements, Shadow DOM, HTML Templates) with libraries like Lit and Stencil for cross-framework interoperability and design system foundations.

Design production-grade real-time chat and messaging systems with structured capacity estimation, fanout strategies, presence systems, and horizontal scaling patterns. Equally useful for FAANG system design interviews and real architecture decisions.

Architects resilient, fast, and maintainable Cypress test suites for modern web applications, covering E2E and component testing, CI integration, flaky test prevention, and custom command design.

Comprehensive TypeScript guidance covering type system, generics, utility types, strict mode, type narrowing, declaration files, migration from JavaScript, and advanced patterns for writing type-safe applications.

Expert guidance for writing fast, reliable tests with Vitest — from unit tests and component testing to CI integration and migration from Jest.

Comprehensive React guidance covering hooks, component patterns, state management, performance optimization, testing, and modern best practices for building maintainable user interfaces.

Expert guidance for building Android apps with Jetpack Compose and Material Design 3, including dynamic theming, custom design systems, component customization, and accessibility-compliant UI implementation.

Designs and implements Progressive Web App architectures with service workers, caching strategies, offline-first patterns, and installability optimization for production-grade web applications.

Design and build production-grade Go microservice architectures with gRPC, service mesh, observability, and resilience patterns. Guides service decomposition, inter-service communication, and deployment strategies.

Design, review, and govern OpenAPI 3.x specifications for production APIs. Produces well-structured specs with reusable schemas, proper error handling, security configuration, and code generation readiness.