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Arpit User

@arpituser7

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Senior AI & Full-Stack Engineer building RAG-based product Q&A and document-to-answer workflows with ChromaDB and LLMs.

India

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At Arborgold Software, I engineered a RAG-based product knowledge Q&A pipeline grounded in product documentation and developed AI-powered automation workflows using LLM APIs and ChromaDB.

As a Freelance Full-Stack Developer, I’ve implemented document-to-answer workflows from parsing and chunking through semantic search and context-aware LLM responses. Earlier, I led frontend development at Farenexus Solutions, where my work on a B2C platform contributed to a 40% increase in user engagement.

Experience

Work history, roles, and key accomplishments

Current

Freelance Full-Stack Developer

Current

Freelance

May 2026 - Present (5 months)

Developed and integrated responsive web interfaces and frontend UI components. Implemented end-to-end document-to-answer workflows with RAG, vector storage, and LLM response generation.

React Next.js TypeScript Python fastAPI ChromaDB RAG Prompt Engineering Semantic Search LLM

Frontend Developer (Senior Scope)

Arborgold Software

Jan 2025 - Apr 2026 (1 year 3 months)

Developed production-ready web application features using React.js, Next.js, Python, FastAPI, and REST APIs. Engineered a RAG-based product knowledge Q&A pipeline and AI-powered automation workflows.

React Next.js Python fastAPI REST APIs RAG ChromaDB OpenAI Gemini Anthropic OAuth Amazon Cognito S3

Software Engineer (Frontend Lead)

Farenexus Solutions

Dec 2023 - Dec 2024 (1 year)

Led frontend development and UI integration for a high-traffic B2C platform. Built data-driven interfaces and complex REST API integrations, driving a 40% increase in user engagement.

React Next.js TypeScript Tailwind REST APIs Performance Optimization Core Web Vitals

Frontend Developer

eSoftware Solutions

Sep 2022 - Aug 2023 (11 months)

Built and maintained scalable web applications using React.js, Node.js, NestJS, TypeScript, PostgreSQL, and MongoDB. Integrated real-time features using WebSockets and Socket.io, improving execution speed by approximately 30%.

React NodeJS NestJS TypeScript PostgreSQL MongoDB REST APIs WebSockets Socket.IO Database Optimization

React Developer

Socialpubli Influencer Marketing

Jul 2021 - Aug 2022 (1 year 1 month)

Developed responsive React.js web applications integrated with RESTful and GraphQL APIs. Built supporting backend integrations using Node.js and Express.js, and implemented secure payment processing with Stripe and Razorpay.

React REST APIs GraphQL NodeJS ExpressJS Stripe Razorpay Webhooks