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Expert guidance for algorithmic trading systems, quantitative analysis, and trading platform development. \n \n Covers core trading domains: algorithmic strategies (moving average crossover, mean reversion, momentum), order execution (market, limit, stop orders), and smart order routing \n Includes backtesting framework with performance metrics (Sharpe ratio, max drawdown, total return) and trade logging for strategy validation \n Provides risk management tools: position sizing via Kelly Criteri

Secure, efficient CI/CD pipelines with multi-stage automation, security gates, and GitOps deployment patterns. \n \n Expertise across GitHub Actions, GitLab CI, and Jenkins with reusable workflows, matrix builds, and intelligent caching strategies for performance optimization \n Embedded security throughout pipelines: SAST/DAST/SCA scanning, secrets management, artifact signing with Cosign, and supply chain integrity verification \n Deployment automation patterns including blue/green, canary, ro

Jest test patterns and best practices for NestJS unit, integration, and e2e testing. \n \n Covers the testing pyramid: unit tests for pure logic, integration tests with real providers using Test.createTestingModule , and e2e tests with supertest for HTTP APIs \n Provides patterns for mocking external services with jest.fn and test doubles, plus in-memory database adapters and test containers for data layer testing \n Emphasizes deterministic tests with proper mock reset between runs, avoiding sh

Advanced Docker containerization expert for multi-stage builds, security hardening, and production deployment patterns. \n \n Covers Dockerfile optimization, multi-stage builds, layer caching, base image selection, and image size reduction strategies \n Provides container security hardening including non-root user configuration, secrets management, and vulnerability scanning \n Handles Docker Compose orchestration with service dependency management, networking, health checks, and resource limits

Expert guidance for automotive systems, connected vehicles, fleet management, telematics, advanced driver assistance systems (ADAS), and automotive software development.

This skill enables Claude to analyze content analytics data, generate comprehensive reports, identify performance trends, calculate ROI and revenue attribution, and provide actionable insights for content optimization.

Complete financial clarity for indie businesses: profit analysis, tax planning, cash flow forecasting, and multi-venture tracking. \n \n Calculates true profitability using a structured formula that accounts for COGS, operating expenses, owner salary, and tax reserves \n Tracks finances separately across multiple businesses with comparative P&L analysis and runway forecasting \n Provides quarterly estimated tax planning with payment schedules and S-corp vs. sole proprietor guidance \n Inclu

Philosophy: Non-opinionated, correctness-focused. This skill provides facts, verified patterns, and Apple-documented best practices — not architecture mandates. It covers iOS 13+ as a minimum deployment target, with modern recommendations targeting iOS 17+ and forward-looking guidance through iOS 26 (post-quantum). Every code pattern is grounded in Apple documentation, DTS engineer posts (Quinn "The Eskimo!"), WWDC sessions, and OWASP MASTG — never from memory alone.

Expert guidance for Django backend development covering models, views, APIs, testing, and production deployment. \n \n Covers model design, ORM optimization, query performance tuning, and migration strategies with focus on preventing N+1 problems \n Supports Django REST Framework development including serializers, viewsets, pagination, filtering, and authentication patterns \n Includes security best practices for CSRF/XSS prevention, permissions, and production-ready configuration \n Provides te

Playwright E2E testing specialist for writing maintainable browser tests, debugging flaky tests, and CI/CD integration. \n \n Emphasizes role-based selectors and auto-waiting to avoid brittle tests and arbitrary timeouts \n Provides Page Object Model patterns for test organization, fixture setup, and configuration guidance \n Includes debugging workflow using trace viewer, screenshots, and retry strategies to identify and fix flaky tests \n Covers API mocking, visual regression testing, and para