Browse Skills
1306+ expert skills across 6 domains. Scored on 6 quality dimensions.
Node.js
Comprehensive Node.js guidance covering runtime fundamentals, async patterns, package management, HTTP servers, streams, worker threads, security, and production deployment.
API Design Architect
Designs RESTful and GraphQL APIs following industry best practices for resource modeling, versioning, error handling, pagination, authentication, and OpenAPI specification.
Flutter Production Developer
Dart-based cross-platform app development with Flutter widget composition, Material and Cupertino design, state management, and production deployment for iOS, Android, and web.
Rust CLI Tools Developer
Build fast, reliable, cross-platform command-line applications in Rust using Clap, tokio, and modern distribution tooling with Unix-philosophy design principles.
Elasticsearch Cluster Architect
Design, optimize, and troubleshoot production Elasticsearch clusters — covering index design, mapping strategies, query optimization, cluster sizing, shard management, relevance tuning with BM25 and custom scoring, aggregation performance, and observability.
Turborepo Monorepo Expert
Design, configure, and optimize Turborepo-based monorepo architectures for JavaScript and TypeScript projects, including task pipelines, caching strategies, CI/CD integration, and package management.
Node REST API Hardener
Systematically hardens Node.js REST APIs against OWASP Top 10 vulnerabilities with production-grade validation, authentication, rate limiting, and security headers.
Stripe Billing Integration Expert
Implement production-grade subscription billing, checkout flows, and webhook-driven payment processing using the Stripe API in modern web applications.
Message Queue Architect
Designs and optimizes asynchronous messaging systems using Kafka, RabbitMQ, SQS, NATS, and Redis Streams with production-grade reliability, observability, and failure handling.
Feed System Design Expert
Design scalable social feed and timeline systems with expert guidance on fan-out strategies, ranking algorithms, event pipelines, and storage architectures for any scale.
Node Event API Architect
Expert guidance for designing and building event-driven APIs and async workflow systems in Node.js/TypeScript. Covers message broker selection, event sourcing, CQRS, idempotency, dead letter queues, CloudEvents schemas, and production reliability patterns.
Vite Build Tooling Expert
Expert guidance for configuring, optimizing, and troubleshooting Vite-based build systems including development server tuning, production bundle optimization, library mode, SSR builds, and plugin development.
React Performance Optimizer
Diagnoses React application performance bottlenecks and provides targeted optimization strategies including memoization, code splitting, state architecture, and rendering pipeline improvements.
Functional Programming Guide
Master functional programming patterns including immutability, pure functions, monads, functors, composition, and algebraic data types. Get expert guidance on applying FP principles in TypeScript, Scala, and other languages.
React Server Components Architect
Expert guidance on designing and implementing React Server Components (RSC) architectures, including component boundary decisions, data fetching patterns, streaming strategies, and migration from client-side React.
Astro Content Sites
Architect and build high-performance content websites using Astro's islands architecture, content collections, and zero-JS-by-default philosophy for blogs, documentation portals, and marketing sites.
Microservices Architecture Advisor
Expert microservices architecture advisor that guides teams through service decomposition, inter-service communication patterns, data consistency strategies, and monolith-to-microservices migration using DDD bounded contexts, saga patterns, and service mesh technologies.
IoT Embedded Systems Engineer
ESP32, Arduino, Raspberry Pi, STM32: from wiring diagrams to firmware to cloud connectivity. Sensor integration, communication protocols (I2C, SPI, UART, MQTT, BLE), power management for battery-operated devices, and over-the-air updates. Hardware meets software with real-world constraints.
Python
Comprehensive Python guidance covering language fundamentals, data structures, async, virtual environments, popular libraries, testing, packaging, and best practices.
GraphQL API Designer
Expert GraphQL API designer that guides teams through schema design, resolver architecture, performance optimization, federation strategy, and REST-to-GraphQL migration using production-proven patterns and the GraphQL specification best practices.
Nx Monorepo Architect
Design and optimize large-scale Nx monorepo workspaces with domain-driven library architecture, module boundary enforcement, distributed caching, and CI pipeline integration for multi-team development.
API Lifecycle Management Expert
Design and execute safe API versioning, deprecation, and sunset strategies that evolve APIs without breaking consumers, following industry-proven governance patterns.
Shopify App Integration Expert
Expert guidance for building production-grade Shopify applications — embedded admin apps, headless storefronts, checkout extensions, and third-party integrations using Shopify's APIs, App Bridge, and Polaris design system.
System Design Interviewer
Guides structured system design discussions for distributed systems — load balancing, database selection, caching layers, message queues, CAP theorem trade-offs, and scalability analysis with architecture decision records and capacity estimation.