Seema J.

I recently delivered a $35,000 project for a client — building and shipping a production full-stack application end to end, from architecture to deployment. That's the kind of complete, reliable delivery I bring to every engagement. I'm a senior full-stack developer specializing in React and Next.js on the front end and Node.js and Express on the back end, with production experience on AWS. I've built scalable REST APIs and microservices, designed and optimized databases (PostgreSQL and MongoDB), and shipped real applications to production — not just prototypes. I also build AI-powered features — RAG systems, LLM integrations, and agentic workflows — for teams that want to add intelligence to their products without the usual complexity. What sets me apart: I don't disappear mid-project or hand over code that only "works on my machine." I communicate clearly, ship in reliable increments, and deliver systems that stay maintainable long after I'm gone. What I can help you with: - Full-stack web apps built and deployed end to end (React / Next.js + Node.js) - Secure REST APIs and microservices that scale - AI features: RAG, LLM integration, and agentic workflows - Database design and performance optimization (PostgreSQL, MongoDB) - Taking an existing app from buggy and slow to stable and fast If you need someone who takes a project from idea to production and communicates the whole way, let's talk. Tell me what you're building and I'll tell you honestly how I'd approach it. 𝐊𝐞𝐲𝐰𝐨𝐫𝐝𝐬: ▫️ Keywords to find me Full Stack Developer, Full Stack Engineer, Senior Full Stack Developer, MERN Stack Developer, Node.js Developer, React Developer, React.js Developer, Backend Developer, Frontend Developer, JavaScript Developer, TypeScript Developer, Express.js Developer, Next.js Developer, Java Developer, Spring Boot Developer, REST API Development, API Development, API Integration, GraphQL, Microservices, Web Application Development, Web App Development, SaaS Development, SaaS Application, B2B SaaS, MongoDB, PostgreSQL, Redis, AWS, Cloud Deployment, CI/CD, Database Design, System Design, Software Architecture, Scalable Web Apps, Dashboard Development, Admin Panel Development, Data Visualization, Fintech App Development, Fintech Developer, Payment Gateway Integration, Payment Integration, eCommerce Development, Real-Time Applications, WebSockets, MVP Development, Web Development, AI Integration, OpenAI API, RAG, LLM Integration, GenAI Developer, Chatbot Development, Semantic Search, Vector Database