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Ranveer Singh

@ranveersingh8

Full Stack Engineer at Appic Softwares building Gemini AI features and RAG search systems with LangChain.js and Pinecone.

India

Message

At Appic Softwares, I develop and maintain full-stack applications and integrated Gemini AI features for document summarization, smart search, and conversational interfaces. I also implemented RAG pipelines with LangChain.js and Pinecone for context-aware responses.

I built Python and FastAPI services for AI inference and data processing, and designed secure REST APIs with JWT authentication, OAuth 2.0, and role-based access control. Redis caching reduced API response times by up to 40%.

At Dotsquares, I built MERN applications, reusable React component libraries, and Node.js microservices integrated with payment gateways and third-party APIs. My projects include an OpenAI-powered chat system, an AI document search system, and full-stack marketplace and booking applications.

Experience

Work history, roles, and key accomplishments

Current

Full Stack Engineer

Current

Appic Softwares

Oct 2023 - Present (3 years)

Developed and maintained full stack web applications using React.js, Next.js, Node.js, and MongoDB. Integrated Gemini AI API and implemented RAG pipelines for context-aware AI responses.

React Next.js NodeJS MongoDB Gemini API LangChain.js Pinecone fastAPI JWT OAuth Redis AWS Agile

Associate Programmer / Full Stack Engineer

Dotsquares

Oct 2021 - Jul 2023 (1 year 9 months)

Built scalable MERN stack applications and developed reusable React.js component libraries. Worked on 10+ projects for UK, US, and AUS-based clients, handling full SDLC.