Hi, I'm Jay Gajera, a Software Development Engineer with 2.5+ years of experience in designing and building scalable software applications. My primary expertise is in backend engineering with Node.js, Express.js, TypeScript, PostgreSQL, MySQL, MongoDB, and REST APIs. I also work with React.js on the frontend and have hands-on experience with Docker, Kubernetes, Git, and microservice architectures. Currently, I work in the Open Banking and FinTech domain, where I build secure APIs, implement authentication and digital signature workflows, and develop banking integrations following industry standards. Beyond my day job, I'm passionate about AI and open source. I've built AI-powered applications using LangChain, vector databases, RAG architectures, and modern LLMs, and I actively maintain open-source projects that help developers. I enjoy helping fellow engineers with: * MERN Development (Node.js, Express.js, TypeScript,React.js) * AI Integrations (RAG, LangChain, LLMs) * Software Engineering Career Guidance Whether you're preparing for interviews, looking for guidance on backend architecture, debugging production issues, or planning your software engineering career, I'd be happy to help through practical, experience-driven discussions.