About the Role We are hiring an experienced MERN Stack Developer who can independently build and scale full-stack applications from scratch The ideal candidate must have solid skills in TypeScript React js Node js Redux and REST APIs along with a solid understanding of microservices architecture mobile API integrations and responsive design Experience with LLMs RAG architecture Kafka Redis webhooks and database systems like PostgreSQL MySQL and MongoDB is essential You ll be working on scalable systems enterprise-grade platforms and AI-integrated products Key Responsibilities Develop and maintain full-stack web applications using React js with TypeScript and Node js Express NestJS Build and document robust RESTful APIs and mobile-ready endpoints Implement and consume webhooks for third-party integrations and internal event-based workflows Ensure responsive design principles across devices and screen sizes Integrate with mobile applications via secure and scalable APIs Work with databases including PostgreSQL MySQL and MongoDB Integrate Large Language Models LLMs and Retrieval-Augmented Generation RAG pipelines Build and deploy microservices architecture using Kafka Redis Docker etc Manage application state using Redux or Redux Toolkit Write test cases using Mocha Chai Jest or similar frameworks Participate in system design architecture discussions and scalability planning Follow Agile practices perform code reviews and contribute to CI CD pipelines Collaborate with cross-functional teams including UI UX DevOps QA and Product Management Required Skills Experience Minimum 4 years of hands-on experience with the MERN stack Strong proficiency in TypeScript React js Node js and Redux Proven experience in building and consuming REST APIs and webhooks Deep knowledge of responsive UI UX development Hands-on experience with mobile-first API design and integrations Strong knowledge of PostgreSQL MySQL and MongoDB Experience with Kafka Redis Docker and microservices Exposure to LLM GPT RAG or similar AI models Solid understanding of software architecture and ability to build systems from the ground up Working knowledge of API security JWT OAuth and rate-limiting Familiar with test-driven development and QA practices Familiarity with Git version control and collaborative workflows Good to Have Experience with GraphQL and gRPC Experience in building SaaS or AI-integrated platforms Familiarity with ElasticSearch or RabbitMQ Experience with AWS GCP or Azure Understanding of serverless and event-driven architectures Benefits Competitive compensation with performance-based hikes Flexible remote or hybrid work options Opportunity to work on cutting-edge technologies including AI and scalable SaaS platforms Strong leadership and learning-driven environment Learning budget for courses certifications and conferences Apply Now on Careers Kayjayglobal com Job Type Full-time Pay From 15 000 00 per month Benefits Provident Fund Work Location In person