Professional Summary Fullstack Developer with commercial experience building scalable web applications using Next.js, React, TypeScript, Node.js, PostgreSQL and MongoDB. Experienced in REST API development, authentication and authorization systems, WebSockets, real-time applications, AI integrations (RAG, LLMs), payment systems, performance optimization, SSR applications and modern frontend architecture. Background in performance marketing with responsibility for advertising budgets up to $120,000/month Technical Skills Frontend: React, Next.js (App Router, SSR), TypeScript, JavaScript, HTML5, CSS3, Tailwind CSS, Zustand, TanStack Query, Formik. Backend: Node.js, Express.js, REST API, WebSockets (Socket.IO), JWT Authentication, Role-Based Access Control, Middleware Architecture, Validation (Zod/Joi). Databases: PostgreSQL, MongoDB, Prisma ORM, SQL Design, Query Optimization. AI & Infrastructure: RAG, LLM Integrations, Vector Search, Qdrant, Vercel AI SDK, Docker, CI/CD, Git, GitHub. Architecture: Fullstack Applications, Real-Time Systems, SaaS Platforms, Payment Processing, Secure Authentication, API Design, Error Handling, Logging.…Professional Summary Fullstack Developer with commercial experience building scalable web applications using Next.js, React, TypeScript, Node.js, PostgreSQL and MongoDB. Experienced in REST API development, authentication and authorization systems, WebSockets, real-time applications, AI integrations (RAG, LLMs), payment systems, performance optimization, SSR applications and modern frontend architecture. Background in performance marketing with responsibility for advertising budgets up to $120,000/month Technical Skills Frontend: React, Next.js (App Router, SSR), TypeScript, JavaScript, HTML5, CSS3, Tailwind CSS, Zustand, TanStack Query, Formik. Backend: Node.js, Express.js, REST API, WebSockets (Socket.IO), JWT Authentication, Role-Based Access Control, Middleware Architecture, Validation (Zod/Joi). Databases: PostgreSQL, MongoDB, Prisma ORM, SQL Design, Query Optimization. AI & Infrastructure: RAG, LLM Integrations, Vector Search, Qdrant, Vercel AI SDK, Docker, CI/CD, Git, GitHub. Architecture: Fullstack Applications, Real-Time Systems, SaaS Platforms, Payment Processing, Secure Authentication, API Design, Error Handling, Logging.WWWW…