Claude Skills by Jeffallan

Use when challenging ideas, plans, decisions, or proposals using structured critical reasoning. Invoke to play devil's advocate, run a pre-mortem, red team, or audit evidence and assumptions.

Use when querying Jira issues, searching Confluence pages, creating tickets, updating documentation, or integrating Atlassian tools via MCP protocol.

Use when fine-tuning LLMs, training custom models, or optimizing model performance for specific tasks. Invoke for parameter-efficient methods, dataset preparation, or model adaptation.

Use when building ML pipelines, orchestrating training workflows, automating model lifecycle, implementing feature stores, or managing experiment tracking systems.

Use when working with pandas DataFrames, data cleaning, aggregation, merging, or time series analysis. Invoke for data manipulation, missing value handling, groupby operations, or performance optimization.

Use when developing Salesforce applications, Apex code, Lightning Web Components, SOQL queries, triggers, integrations, or CRM customizations. Invoke for governor limits, bulk processing, platform events, Salesforce DX.

Use when building Shopify themes, apps, custom storefronts, or e-commerce solutions. Invoke for Liquid templating, Storefront API, app development, checkout customization, Shopify Plus features.

Use when building Apache Spark applications, distributed data processing pipelines, or optimizing big data workloads. Invoke for DataFrame API, Spark SQL, RDD operations, performance tuning, streaming analytics.

Use when building Vue 3 applications with JavaScript only (no TypeScript). Invoke for JSDoc typing, vanilla JS composables, .mjs modules.

Use when developing WordPress themes, plugins, customizing Gutenberg blocks, implementing WooCommerce features, or optimizing WordPress performance and security.

Use when assessing body fat percentage from skinfold measurements, calculating body density, or interpreting body composition results using Durnin-Womersley or Jackson-Pollock equations.

Use when planning macronutrient targets, calculating daily calorie ranges, or building meal plans based on body type, activity level, and fitness goals.

Use when estimating one-rep max (1RM), converting between weight and rep ranges, or calculating training loads from a validated percentage-of-max table.

Senior Angular architect specializing in Angular 17+ with standalone components, signals, and enterprise-grade application development.

Senior API architect with expertise in designing scalable, developer-friendly REST and GraphQL APIs with comprehensive OpenAPI specifications.

Senior software architect specializing in system design, design patterns, and architectural decision-making.

Senior chaos engineer with deep expertise in controlled failure injection, resilience testing, and building systems that get stronger under stress.

Senior CLI developer with expertise in building intuitive, cross-platform command-line tools with excellent developer experience.

Senior cloud architect specializing in multi-cloud strategies, migration patterns, cost optimization, and cloud-native architectures across AWS, Azure, and GCP.

Documentation specialist for inline documentation, API specs, documentation sites, and developer guides.

Senior engineer conducting thorough, constructive code reviews that improve quality and share knowledge.

Senior C++ developer with deep expertise in modern C++20/23, systems programming, high-performance computing, and zero-overhead abstractions.

Senior C# developer with mastery of .NET 8+ and Microsoft ecosystem. Specializes in high-performance web APIs, cloud-native solutions, and modern C# language features.

Senior database optimizer with expertise in performance tuning, query optimization, and scalability across multiple database systems.

Expert debugger applying systematic methodology to isolate and resolve issues in any codebase.

Senior DevOps engineer specializing in CI/CD pipelines, infrastructure as code, and deployment automation.

Senior Django specialist with deep expertise in Django 5.0, Django REST Framework, and production-grade web applications.

Senior .NET Core specialist with deep expertise in .NET 8, modern C#, minimal APIs, and cloud-native application development.

Senior embedded systems engineer with deep expertise in microcontroller programming, RTOS implementation, and hardware-software integration for resource-constrained devices.

Senior FastAPI specialist with deep expertise in async Python, Pydantic V2, and production-grade API development.

Requirements specialist conducting structured workshops to define comprehensive feature specifications.

Senior mobile engineer building high-performance cross-platform applications with Flutter 3 and Dart.

Security-focused full-stack developer implementing features across the entire application stack.

Senior game developer with expertise in creating high-performance gaming experiences across Unity, Unreal, and custom engines.

Senior Go developer with deep expertise in Go 1.21+, concurrent programming, and cloud-native microservices. Specializes in idiomatic patterns, performance optimization, and production-grade systems.

Senior GraphQL architect specializing in schema design and distributed graph architectures with deep expertise in Apollo Federation 2.5+, GraphQL subscriptions, and performance optimization.

Senior Java architect with deep expertise in enterprise-grade Spring Boot applications, microservices architecture, and cloud-native development.

Senior JavaScript developer with 10+ years mastering modern ES2023+ features, asynchronous patterns, and full-stack JavaScript development.

Senior Kotlin developer with deep expertise in coroutines, Kotlin Multiplatform (KMP), and modern Kotlin 1.9+ patterns.

Senior Kubernetes specialist with deep expertise in production cluster management, security hardening, and cloud-native architectures.

Senior Laravel specialist with deep expertise in Laravel 10+, Eloquent ORM, and modern PHP 8.2+ development.

Senior legacy modernization specialist with expertise in transforming aging systems into modern architectures without disrupting business operations.

Senior MCP (Model Context Protocol) developer with deep expertise in building servers and clients that connect AI systems with external tools and data sources.

Senior distributed systems architect specializing in cloud-native microservices architectures, resilience patterns, and operational excellence.

Observability and performance specialist implementing comprehensive monitoring, alerting, tracing, and performance testing systems.

Senior NestJS specialist with deep expertise in enterprise-grade, scalable TypeScript backend applications.

Senior Next.js developer with expertise in Next.js 14+ App Router, server components, and full-stack deployment with focus on performance and SEO excellence.

Senior PHP developer with deep expertise in PHP 8.3+, Laravel, Symfony, and modern PHP patterns with strict typing and enterprise architecture.

Senior E2E testing specialist with deep expertise in Playwright for robust, maintainable browser automation.

Senior PostgreSQL expert with deep expertise in database administration, performance optimization, and advanced PostgreSQL features.