Full Stack Developer SaaS AI powered platform Node.js React.js Stripe AWS

We are looking for an experienced Full Stack JavaScript Developer to support the ongoing development of an existing AI-powered web platform. The application is already built and running, so the primary focus will be working with the existing codebase: fixing bugs, improving current functionality, implementing new features, and maintaining integrations with OpenAI and Stripe. We are looking for someone who is comfortable quickly understanding an existing application, troubleshooting issues across the frontend and backend, and delivering reliable solutions. Responsibilities - Develop and improve features using React.js, Next.js, Node.js, and TypeScript - Troubleshoot and fix bugs across the frontend and backend - Maintain and improve OpenAI API integrations and AI-powered workflows - Develop and maintain Stripe integrations, including payments, subscriptions, webhooks, and billing-related functionality - Build, maintain, and optimize REST APIs and third-party integrations - Implement new functionality and improve existing product features - Improve application performance, reliability, and user experience - Work with the existing database and backend architecture - Collaborate with the team to deliver stable, production-ready solutions Requirements - Strong hands-on experience with React.js, - Next.js, Node.js, and TypeScript - Proven experience developing and maintaining full stack web applications - Practical experience integrating and working with the OpenAI API - Experience with Stripe API, payments, subscriptions, and webhooks - Strong understanding of REST APIs and third-party integrations - Good understanding of frontend state management - Ability to quickly understand and work within an existing codebase - Strong debugging and problem-solving skills - Ability to work independently and communicate clearly Nice to Have - Experience with PostgreSQL or other relational databases - Experience working on SaaS or AI-powered products - Knowledge of cloud environments and deployment processes - Experience maintaining and debugging production applications