Krunal M.

I help businesses build generative AI applications, AI agents, and RAG systems for customer support, internal knowledge, and workflow automation. My experience also includes enterprise blockchain, Hyperledger, and Solidity smart contract development. I’m Krunal Mangroliya, CTO and co-founder of Rain Infotech. I combine technical leadership with AI and blockchain development to help clients turn product requirements into working applications. My Upwork track record includes $300K+ earned, 94 jobs, 1,800+ hours, and a 100% Job Success Score. Client feedback highlights communication, collaboration, documentation, and continued support. AI DEVELOPMENT & INTEGRATION • Generative AI applications: Integrate large language models into web and mobile products using OpenAI APIs and LangChain, with interfaces built around the intended user workflow. • Retrieval-augmented generation (RAG): Connect language models with business documents and knowledge sources for context-aware answers, internal knowledge assistants, and customer support use cases. • AI agents and workflow automation: Build assistants and connected workflows for sales support, customer service, and internal operations. • Custom LLM implementation: Adapt and integrate large language models around project requirements, including fine-tuning where appropriate. • AI product integration: Connect AI features with application interfaces, backend services, and existing business systems. • Web and mobile development: Support AI applications with React, Next.js, Node.js, TypeScript, and Flutter. PROJECT EXAMPLES FROM RAIN INFOTECH These are Rain Infotech team products; my individual Upwork work history is listed separately. TextileStudio — AI embroidery design and textile visualization The product supports turning text or sketches into embroidery designs, exploring fabric and color variations, and visualizing textile concepts. Features include design editing, pattern repeats, background removal, scan cleanup, and garment visualization. It supports English, Hindi, and Gujarati inputs. Voymage — AI image generation and editing The product brings together image generation, enhancement, and editing tools for portraits, product imagery, and other visual content. Features include text-to-image and sketch-to-image generation, background removal, image expansion, upscaling, colorization, and virtual try-on. Leepik — Bank statement parsing and accounting automation This product extracts text from bank statement PDFs, provides editable transactions and balance reconciliation, and supports client-specific ledger rules. It exports Tally XML and CSV and includes multi-client workspaces and team access. Its statement processing uses PDF text extraction, not OCR or LLM calls. These examples cover creative AI applications and practical business automation. For your project, we can discuss which approach fits your data and existing systems. BLOCKCHAIN & WEB3 DEVELOPMENT • Enterprise blockchain solutions using Hyperledger Fabric and Besu. • Solidity smart contracts and decentralized applications on Ethereum, Polygon, and BSC. • Token development, asset tokenization, staking platforms, and NFT marketplaces. • Wallet integrations and blockchain-connected web and mobile applications. My completed Upwork work includes smart contracts, blockchain websites, token explorers, cryptocurrency codebase updates, and blockchain-supported energy trading. This experience complements my current AI focus. TECHNOLOGIES & CERTIFICATIONS AI: OpenAI API, LangChain, RAG, TensorFlow, Whisper, AI agents Blockchain: Hyperledger Fabric, Besu, Solidity, Ethereum, Polygon, BSC, Web3.js Web and mobile: React, Next.js, Node.js, TypeScript, Flutter Development and deployment: Docker, GitHub, CI/CD Linux Foundation certifications: • BCP: Besu Certified Professional • HFCP: Hyperledger Fabric Certified Practitioner WORKING TOGETHER Whether you need an AI feature in an existing application, a document-based assistant, or a custom product, the starting point is a clear use case. Share your current workflow, available data, existing technology, and the outcome you want to achieve. As CTO of Rain Infotech, I can also discuss team support when a project requires multiple development disciplines. We can identify a practical starting scope and discuss integration requirements before expanding the solution. Send me a message about your project, and let’s discuss the next step.