Hi, I am Gurpreet, a Senior Full-Stack Developer and Solution architect with 12+ years of experience building scalable web and mobile applications for startups, SaaS companies, enterprises, and growing businesses.
I specialize in designing and developing high-performance applications that are scalable, maintainable, and focused on delivering exceptional user experiences.
Whether you need a new product built from scratch, an existing application improved, or a technical leader to drive development, I can help turn your ideas into production-ready solutions.
Core Expertise
๐๐ฟ๐ผ๐ป๐๐ฒ๐ป๐ฑ ๐๐ฒ๐๐ฒ๐น๐ผ๐ฝ๐บ๐ฒ๐ป๐
โ React.js
โ Next.js
โ TypeScript
โ JavaScript (ES6+)
โ Redux Toolkit
โ React Native
โ HTML5 & CSS3
โ Material UI
โ Tailwind CSS
โ Responsive & Mobile-First Design
๐๐ฎ๐ฐ๐ธ๐ฒ๐ป๐ฑ ๐๐ฒ๐๐ฒ๐น๐ผ๐ฝ๐บ๐ฒ๐ป๐
โ Node.js
โ NestJS
โ Express.js
โ Python (Django, FastAPI, Flask)
โ REST APIs
โ Microservices Architecture
โ Authentication & Authorization
โ API Integrations
๐๐ฎ๐๐ฎ๐ฏ๐ฎ๐๐ฒ ๐ง๐ฒ๐ฐ๐ต๐ป๐ผ๐น๐ผ๐ด๐ถ๐ฒ๐
โ PostgreSQL
โ MongoDB
โ MySQL
โ DynamoDB
โ Redis
๐๐น๐ผ๐๐ฑ & ๐๐ฒ๐๐ข๐ฝ๐
โ AWS
โ Lambda
โ EC2
โ S3
โ API Gateway
โ Docker
โ CI/CD Pipelines
โ Serverless Applications
๐๐ ๐๐ฝ๐ฝ๐น๐ถ๐ฐ๐ฎ๐๐ถ๐ผ๐ป ๐๐ฒ๐๐ฒ๐น๐ผ๐ฝ๐บ๐ฒ๐ป๐
I help businesses integrate AI into their products and workflows using:
โ OpenAI GPT
โ AI Chatbots
โ AI Assistants
โ Workflow Automation
โ Document Processing
โ Custom AI-Powered Applications
๐๐น๐ผ๐ฐ๐ธ๐ฐ๐ต๐ฎ๐ถ๐ป ๐๐ ๐ฝ๐ฒ๐ฟ๐๐ถ๐๐ฒ
In addition to full-stack development, I have hands-on experience building blockchain-based solutions, including:
โ Smart Contracts (Solidity)
โ Hyperledger Fabric
โ dApps Development
โ Token Development
โ NFT Platforms
โ Wallet Integrations
โ Supply Chain Solutions
โ Private Blockchain Networks
โ Web3 Integrations
๐ช๐ต๐ฎ๐ ๐ ๐๐ฒ๐น๐ถ๐๐ฒ๐ฟ
โ Clean, Maintainable Code
โ Scalable Architecture
โ Modern User Experience
โ Fast Communication
โ Reliable Project Delivery
โ Long-Term Support & Maintenance
โ Agile Development Practices
๐๐ป๐ฑ๐๐๐๐ฟ๐ถ๐ฒ๐ ๐ฆ๐ฒ๐ฟ๐๐ฒ๐ฑ
โข SaaS Platforms
โข FinTech
โข E-Commerce
โข Healthcare
โข Logistics & Supply Chain
โข Enterprise Applications
โข AI Products
โข Blockchain & Web3
With over 12 years of development experience and team leadership responsibilities, I understand both the technical and business aspects of software development.
Let's discuss your project and build something exceptional together.
Blockchain Architecture
Blockchain Development
Distributed Ledger Technology
Smart Contract
React
Node.js
React Native
Python
Golang
JavaScript
Solidity
Supply Chain Management
DApps User Experience
digvijay T.
Chandigarh, India
$15/hr
4.7
51 jobs
L๐๐ญโ๐ฌ ๐๐จ๐ฅ๐ฅ๐๐๐จ๐ซ๐๐ญ๐ ๐๐ง๐ ๐ญ๐ฎ๐ซ๐ง ๐ฒ๐จ๐ฎ๐ซ ๐ข๐๐๐๐ฌ ๐ข๐ง๐ญ๐จ ๐ซ๐๐๐ฅ-๐ฐ๐จ๐ซ๐ฅ๐, ๐๐ฎ๐ง๐๐ญ๐ข๐จ๐ง๐๐ฅ ๐ฉ๐ซ๐จ๐๐ฎ๐๐ญ๐ฌ.
โ Top Rated AI Automation Expert | Blockchain Expert | AI | ML | RAG | JavaScript Developer
โ Completed 40+ projects as an AI Automation Expert, Blockchain Expert, AI/ML Engineer, RAG Expert, and JavaScript Developer with outstanding client feedback
โฑ๏ธ 4000+ hours delivered with consistent 5โญ ratings
๐ฌ Fluent English communication
๐ Available to start immediately โ Click "INVITE"
โโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโโ
My Services as an AI Automation Expert | Blockchain Expert | AI | ML | RAG | JavaScript Developer:
โบ AI Automation Expert for intelligent workflow automation, AI agents, business process automation, browser automation, CRM automation, and enterprise AI solutions
โบ AI Automation Expert building AI agents and autonomous workflows using OpenAI, Claude, Gemini, DeepSeek, Llama, CrewAI, AutoGen, LangGraph, and custom AI pipelines
โบ Blockchain Expert for smart contract development, decentralized applications (dApps), Web3 integrations, crypto wallets, token development, and blockchain-based enterprise solutions
โบ Blockchain Expert with experience integrating Ethereum, Solana, Polygon, BNB Chain, and other EVM-compatible blockchain networks
โบ AI & ML Expert developing machine learning models, predictive analytics, recommendation systems, NLP applications, computer vision solutions, and intelligent data-driven systems
โบ AI & ML Expert using TensorFlow, PyTorch, Scikit-learn, Hugging Face Transformers, and modern AI frameworks for production-ready solutions
โบ RAG Expert building Retrieval-Augmented Generation (RAG) systems using LangChain, LangGraph, LlamaIndex, OpenAI, Claude, Gemini, and vector databases
โบ RAG Expert for AI-powered search, semantic search, enterprise knowledge retrieval, intelligent assistants, and custom AI chatbots
โบ RAG Expert for AI chatbots trained on PDFs, websites, databases, Notion, SharePoint, Confluence, internal documentation, and proprietary business data
โบ RAG Expert using Pinecone, ChromaDB, FAISS, Weaviate, Qdrant, and Milvus for scalable vector search and knowledge management
โบ JavaScript Developer building modern, scalable web applications using JavaScript, TypeScript, React, Next.js, Node.js, Express.js, NestJS, Tailwind CSS, Shadcn/UI, REST APIs, GraphQL, PostgreSQL, MongoDB, and cloud-native architectures
โบ JavaScript Developer creating high-performance full-stack applications, SaaS platforms, dashboards, AI-integrated web apps, and enterprise-grade solutions with responsive UI/UX
๐๐๐ฏ๐ ๐๐ง ๐ข๐๐๐ ๐ข๐ง ๐ฆ๐ข๐ง๐? ๐๐๐ญโ๐ฌ ๐๐ซ๐ข๐ง๐ ๐ข๐ญ ๐ญ๐จ ๐ฅ๐ข๐๐ โ ๐๐๐ฌ๐ญ, ๐๐ฎ๐ง๐๐ญ๐ข๐จ๐ง๐๐ฅ, ๐๐ง๐ ๐๐ฎ๐ญ๐ฎ๐ซ๐-๐ซ๐๐๐๐ฒ.
Blockchain
ML Automation
Python
AI Development
Automation
Artificial Intelligence
API Integration
Deep Learning
React
Microsoft Azure
Automated Workflow
Retrieval Augmented Generation
Python Script
JavaScript
FastAPI
AI Bot
CRM Development
CRM Automation
API
Marketing Automation
Utkarsh K.
Chandigarh, India
$20/hr
5.0
19 jobs
๐ Full Stack Developer specializing in MERN, React & Scalable Web Applications
โ ๐โญ ๐๐ฅ๐ข๐๐ง๐ญ ๐ ๐๐๐๐๐๐๐ค | โ ๐ ๐๐ฌ๐ญ ๐๐๐ฅ๐ข๐ฏ๐๐ซ๐ฒ | โ ๐๐๐ฅ๐ข๐๐๐ฅ๐ ๐๐ซ๐จ๐๐ฅ๐๐ฆ ๐๐จ๐ฅ๐ฏ๐๐ซ
If you're looking for a developer who can ๐ช๐ฎ๐ข๐๐ค๐ฅ๐ฒ ๐๐ข๐ฑ ๐ข๐ฌ๐ฌ๐ฎ๐๐ฌ, ๐๐ฎ๐ข๐ฅ๐ ๐๐๐๐ญ๐ฎ๐ซ๐๐ฌ, ๐จ๐ซ ๐๐๐ฏ๐๐ฅ๐จ๐ฉ ๐ฒ๐จ๐ฎ๐ซ ๐ฐ๐๐ ๐๐ฉ๐ฉ๐ฅ๐ข๐๐๐ญ๐ข๐จ๐ง ๐๐ซ๐จ๐ฆ ๐ฌ๐๐ซ๐๐ญ๐๐ก, you're in the right place.
I specialize in ๐๐๐๐๐ญ, ๐๐จ๐๐.๐ฃ๐ฌ, ๐๐ง๐ ๐๐ฎ๐ฅ๐ฅ ๐ฌ๐ญ๐๐๐ค ๐๐๐ฏ๐๐ฅ๐จ๐ฉ๐ฆ๐๐ง๐ญ, helping clients build fast, scalable, and efficient applications.
๐ผ ๐๐๐๐ ๐ ๐๐๐ ๐๐๐๐ ๐๐๐ ๐๐๐๐
๐น ๐๐๐๐ ๐๐ญ๐๐๐ค ๐๐๐ฏ๐๐ฅ๐จ๐ฉ๐ฆ๐๐ง๐ญ
โข React.js frontend development
โข Node.js & Express backend
โข MongoDB database design & optimization
๐น ๐๐ฎ๐ ๐ ๐ข๐ฑ๐ข๐ง๐ & ๐๐ฆ๐ฉ๐ซ๐จ๐ฏ๐๐ฆ๐๐ง๐ญ๐ฌ (๐๐จ๐ซ๐ ๐๐ญ๐ซ๐๐ง๐ ๐ญ๐ก)
โข Fixing React & JavaScript issues quickly
โข Debugging and improving existing applications
โข Performance and code optimization
๐น ๐๐๐ & ๐๐๐๐ค๐๐ง๐ ๐๐๐ฏ๐๐ฅ๐จ๐ฉ๐ฆ๐๐ง๐ญ
โข REST API development & integrations
โข Third-party API integrations
โข Secure and scalable backend systems
๐น ๐๐๐ ๐๐ฉ๐ฉ๐ฅ๐ข๐๐๐ญ๐ข๐จ๐ง๐ฌ
โข Custom web app development
โข Feature enhancements and maintenance
โข Clean, responsive UI implementation
๐น ๐๐ฅ๐จ๐๐ค๐๐ก๐๐ข๐ง (๐๐๐ฅ๐๐๐ญ๐ข๐ฏ๐ ๐๐ฑ๐ฉ๐๐ซ๐ญ๐ข๐ฌ๐)
โข Smart contract integration
โข Web3-based application features
๐ ๐๐๐ ๐๐๐๐๐๐๐ ๐๐๐๐ ๐๐
โข Quick turnaround for urgent fixes
โข Strong problem-solving skills
โข Clients recommend and rehire
โข Clear communication and updates
๐ ๐๐๐๐๐๐๐๐๐๐ ๐๐๐๐๐๐๐๐๐๐
โข Successfully delivered React bug fixing and feature tasks
โข Completed long-term full stack projects (100+ hours)
โข Built and improved scalable web applications
โข Worked on blockchain-based solutions
๐ค ๐๐๐ญโ๐ฌ ๐๐จ๐ซ๐ค ๐๐จ๐ ๐๐ญ๐ก๐๐ซ
๐๐๐๐ ๐ก๐๐ฅ๐ฉ ๐ฐ๐ข๐ญ๐ก:
โ Fixing your React app
โ Building a scalable web application
โ Backend or API development
๐ฉ ๐๐๐ง๐ ๐ฆ๐ ๐ ๐ฆ๐๐ฌ๐ฌ๐๐ ๐ โ ๐โ๐ฅ๐ฅ ๐ซ๐๐ฌ๐ฉ๐จ๐ง๐ ๐ช๐ฎ๐ข๐๐ค๐ฅ๐ฒ ๐๐ง๐ ๐ก๐๐ฅ๐ฉ ๐ฒ๐จ๐ฎ ๐ฌ๐จ๐ฅ๐ฏ๐ ๐ข๐ญ ๐ฐ๐ข๐ญ๐ก๐จ๐ฎ๐ญ ๐๐๐ฅ๐๐ฒ๐ฌ.
React
Node.js
JavaScript
MongoDB
ExpressJS
Full-Stack Development
MERN Stack
API Development
API Integration
Web Application Development
Bug Fix
Front-End Development
Back-End Development
HTML5
CSS 3
Responsive Design
Next.js
web3.js
WordPress
Webflow
Vinod G.
Chandigarh, India
$45/hr
5.0
16 jobs
Most blockchain projects don't fail because of bad smart contracts, they fail because the frontend can't communicate with the chain reliably, the wallet integration breaks under real users, or the on-chain architecture wasn't designed for the product from day one.
I build full stack blockchain applications where the smart contract logic, Web3 frontend, and backend infrastructure are designed together not bolted together after the fact.
What I've shipped:
ERC-20/721 smart contracts, DeFi protocols, and NFT marketplaces handling real transaction volume on Solana and EVM chains
Full stack Web3 platforms with wallet integrations, token economies, and cross-chain DApp architecture
Blockchain-integrated game systems, on-chain asset ownership, NFT-based progression, and token reward mechanics
React and Next.js frontends for fintech and Web3 products with complex data flows and real-time performance
AI-connected blockchain tools, on-chain automation agents and LLM-connected workflows where relevant
Where I'm strongest:
Solidity and EVM smart contracts built for security and auditability, not just functionality
React and Next.js frontend and backend for Web3 UIs that handle real users
DeFi protocol integrations and NFT platform builds
Blockchain game development, on-chain mechanics, asset systems, and token economies
How I work:
I ask why before I write code. Every architecture decision, chain selection, contract structure, wallet integration approach gets validated against your product requirements before development starts. I've worked with startups, gaming studios, and DeFi teams. I don't just build features, I help you think through the architecture first.
Tech Stack:
Solidity | EVM | Solana | Web3.js | Ethers.js | IPFS
React | Next.js | Node.js | MongoDB | REST APIs
MetaMask | WalletConnect | NFT Standards | DeFi Protocols
OpenAI API | AI Agents | LLM Workflows
GitHub Actions | Performance Optimization
If you need a blockchain developer who understands the full stack from smart contract to user interface, let's talk.
Regards
Vinod
Last Updated on June 05, 2026
Blockchain Development
Ethereum
Smart Contract
AI Chatbot
AI App Development
Web3
React
Node.js
MongoDB
Game Development
Web Development
App Development
Solidity
DeFi
Blockchain, NFT & Cryptocurrency
Gaming NFT
Ethers.js
IPFS
Mosajjid K.
Chandigarh, India
$20/hr
4.7
10 jobs
I am a highly skilled Blockchain Developer with 4 years of experience in developing and deploying Smart Contracts, Decentralized Finance (DeFi) applications, and NFT Marketplaces. I possess a deep understanding of blockchain technology and its applications in various domains.
I am proficient in a wide range of programming languages and frameworks, including Solidity, React, Node.js, and MongoDB. I have experience working with various blockchain technologies, such as Ethereum, Polkadot, and Binance Smart Chain, and I am also skilled in building web applications and websites using HTML, CSS, JavaScript, and other popular technologies.
Here's a brief overview of my skills and expertise:
----------------------------------------------------------
โ Blockchain Development: I have a solid foundation in blockchain technologies such as Ethereum, Binance Smart Chain, and Tron Chain. I excel at developing custom blockchain solutions, integrating blockchain networks, and implementing blockchain protocols.
โ Smart Contracts: I am proficient in writing smart contracts using Solidity. I have hands-on experience in developing and auditing smart contracts for various use cases, including token creation, ICOs, decentralized exchanges (DEXs), lending protocols, and more.
โ DeFi (Decentralized Finance): I have a strong understanding of the DeFi ecosystem and have developed and deployed several DeFi protocols. I am well-versed in concepts like liquidity pools, yield farming, automated market makers (AMMs), flash loans, and lending platforms.
โ NFT Marketplaces: I specialize in building NFT marketplaces on blockchain networks, enabling users to buy, sell, and trade non-fungible tokens. I have expertise in integrating popular NFT standards like ERC-721 and ERC-1155, and developing features like auctions, royalties, and metadata management.
โ Web3 Development: I am skilled in Web3 development, allowing seamless integration of blockchain functionality into web applications. I can create intuitive user interfaces (UIs) for DApps using frameworks like React, Angular, or Vue.js, and connect them with smart contracts using libraries like Web3.js or Ethers.js.
โ Full Stack Development: I have a strong command over both front-end and back-end development. I excel at building dynamic and responsive web applications using the latest technologies and frameworks.
โ React JS: I'm highly proficient in React JS and have hands-on experience in developing modern and interactive user interfaces. I have worked on various projects leveraging React JS, Redux, and other related libraries to create engaging and high-performance web applications.
My areas of expertise:
โ Ethereum Smart Contracts and Dapps (Solidity, Truffle, Web3.js, MetaMask)
โ Token implementations (ERC20, BEP20, TRC20, ERC721, etc.)
โ Ethereum and other cryptocurrencies
โ Private Blockchain Solutions using Hyperledger Fabric
โ Payment's integrations with Stripe, Coinbase (Bitcoin, Ethereum, etc.)
โ Created MLM software using blockchain for Staking and Mining
If you're looking for a Blockchain Developer who can create secure and scalable blockchain solutions for your business, I am here to help. Let's work together to bring your ideas to life on the blockchain!
Thanks for viewing my Profile!
Blockchain
Ethereum
JavaScript
React
Node.js
Web Development
Web3
web3.js
NFT
Blockchain, NFT & Cryptocurrency
NFT Marketplace
Solidity
TRON
Truffle
Etherscan
Sohit S.
Chandigarh, India
$25/hr
4.8
10 jobs
7+ years skilled Blockchain Developer creating secure, scalable dApps and smart contracts on Ethereum, Solana, and other cutting-edge platforms, delivering innovative Web3 solutions.
๐ฅ ๐๐ฒ๐ ๐ฒ๐ ๐ฝ๐ฒ๐ฟ๐๐ถ๐๐ฒ
-- ๐๐ฆ๐๐ซ๐ญ ๐๐จ๐ง๐ญ๐ซ๐๐๐ญ ๐๐๐ฏ๐๐ฅ๐จ๐ฉ๐ฆ๐๐ง๐ญ: Proficient in Solidity & Rust with Hardhat, Foundry, and Anchor for secure, gas-optimized, and audit-ready smart contracts
-- ๐๐๐ฉ๐ฉ ๐๐๐ฏ๐๐ฅ๐จ๐ฉ๐ฆ๐๐ง๐ญ: Full-stack Web3 apps using top JavaScript/TypeScript frameworks with wallet connectivity, contract integrations, and event handling
-- ๐๐ ๐๐ฌ & ๐๐๐ซ๐ค๐๐ญ๐ฉ๐ฅ๐๐๐๐ฌ: Expertise in ERC-721, ERC-1155, NFT minting, metadata on IPFS, on-chain/off-chain metadata, and scalable NFT marketplaces
-- ๐๐จ๐ค๐๐ง๐ข๐ณ๐๐ญ๐ข๐จ๐ง: TCustom ERC-20, ERC-721, ERC-1155 tokens for governance, rewards, staking, membership, collectibles, and more
-- ๐๐๐ ๐ข ๐๐จ๐ฅ๐ฎ๐ญ๐ข๐จ๐ง๐ฌ: DEXs, staking, yield farming, liquidity pools, vaults, reward mechanisms, and custom financial primitives
-- ๐๐ซ๐จ๐ฌ๐ฌ-๐๐ก๐๐ข๐ง & ๐๐๐๐ ๐๐ง๐ญ๐๐ ๐ซ๐๐ญ๐ข๐จ๐ง: Smart contract + frontend integration with MetaMask, Phantom, WalletConnect, Solana RPC, and decentralized protocols
๐ฅ ๐ง๐ฒ๐ฐ๐ต ๐ฆ๐๐ฎ๐ฐ๐ธ
* Blockchain: Ethereum, Solana, Polygon, Binance Smart Chain (BSC), Avalanche
* Languages: Solidity, Rust, JavaScript, TypeScript
* Tools: Hardhat, Foundry, Anchor, Ethers.js, Web3.js, Wagmi, Viem, IPFS, Pinata, Moralis
* Frameworks: React.js, Next.js, Vite, TailwindCSS, GraphQL
๐ฅ ๐๐๐๐๐๐๐ ๐๐๐๐ ๐๐ ๐๐๐๐๐:
- Handle the tech wonโt waste time on micromanagement
- Always have a reliable partner
- Enjoy collaborating with 24/7 availability
Reach out, and we can start shaping success.
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