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Full Stack Web Application Developer – React, Node.js & AI Chatbots

Orçamento: $100.0 FIXED / ⭐ 0.00 (0) United Kingdom

javascript, html5, react-js, node.js, api-integration, next.js, python, web-programming

We are seeking a skilled Full Stack Developer to enhance and scale our web application. The ideal candidate should have strong experience in both front-end and back-end development, along with a solid understanding of modern web technologies and best practices. You will be responsible for developing new features, optimizing application performance, maintaining clean and scalable code, and delivering a seamless user experience. You will collaborate closely with our design team to transform UI/UX designs into responsive, visually appealing, and high-performing web interfaces. Develop and maintain responsive frontend applications using modern frameworks such as React.js, Next.js, Vue.js, or Angular. Build scalable backend services and REST/GraphQL APIs using Node.js (Express/NestJS), Python (Django/FastAPI), PHP (Laravel), or .NET. Integrate databases such as PostgreSQL, MySQL, MongoDB, or Firebase. Design and implement AI-powered chatbot functionality (OpenAI, Claude, Gemini, or similar LLMs) to provide intelligent customer support and automate user interactions. Build an interactive chat interface with real-time messaging, conversation history, typing indicators, and responsive layouts. Optimize website speed, security, SEO, and overall performance. Collaborate with designers to implement pixel-perfect, user-friendly layouts. Write clean, maintainable, and well-documented code while participating in code reviews and testing. Required Skills: Strong proficiency in HTML5, CSS3, JavaScript/TypeScript. Experience with modern frontend frameworks (React, Next.js, Vue, or Angular). Experience with backend frameworks (Node.js, Express, NestJS, Django, FastAPI, Laravel, etc.). Knowledge of databases, authentication, API development, and cloud deployment. Experience integrating AI chatbots and third-party APIs. Familiarity with Git, Docker, CI/CD, and cloud platforms such as AWS, Azure, or Google Cloud. We are looking for someone who can deliver a modern, scalable, and user-friendly web application with an integrated AI chatbot and a polished chat-based website interface.
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