• Web Development: PHP, Laravel, JavaScript, TypeScript, React, Next.js, jQuery, AJAX, HTML5, CSS3, Bootstrap, TailwindCSS • WordPress & eCommerce: Custom WordPress Plugins, WordPress & WooCommerce CRM Systems, Custom Database Tables, Action Scheduler, Shortcodes, Admin Dashboards, Lead Tracking, Request Lifecycle Management, Quote Versioning, Payment Tracking, Email Workflows, PII Lifecycle Management • Backend & APIs: REST APIs, Third-Party API Integrations, Payment Gateway Integration, Webhooks, Authentication Systems, Node.js, Express.js, REST API Design, API Contract Validation, DTOs, Async Job Processing, Workers, Webhooks, HMAC Signatures, Idempotency Keys, Rate Limiting, Provider Integrations, Reverse Engineering, Scraping, Playwright Automation • Architecture & System Design: Multi-Provider Architecture, Provider/Adapter Pattern, Registry Pattern, Strategy Pattern, Orchestrator Pattern, Repository Pattern, Anti-Corruption Layer, Canonical Data Modeling, Cache-Aside Strategy, DB-First Caching, Stale Fallback, Request Coalescing, Observability by Design • Security & Privacy: API Keys, Client ID Guards, HMAC-SHA256, Anti-Replay Validation, PII Encryption, SHA-256 Hashing, Consent Tracking, TTL-Based Purge Rules, Anonymization Flows, Security Audit Trails • Performance & SEO: Technical SEO, Core Web Vitals Optimization, Website Performance Tuning, Caching Strategies, Mobile Optimization, PageSpeed Optimization, Google Analytics 4 (GA4), Google Tag Manager (GTM) • Cloud & DevOps: AWS (EC2, Lambda, S3, RDS, API Gateway, CloudFront), GCP, Azure, Docker, Kubernetes, Terraform, GitHub Actions, GitLab CI, Jenkins, CI/CD Pipelines • Databases & Caching: PostgreSQL, MongoDB, MySQL, Redis, SQLite, DynamoDB • AI & Automation: AI-Assisted Development, GitHub Copilot, Architecture Planning, Source-Code Audits, Technical Documentation, Prompt Engineering, Workflow Automation, Implementation Planning • Testing & QA: TDD, BDD, Jest, Mocha, Cypress, Playwright, Super