Hire the Best Blockchain Developers in Surat, IN

• Developed a decentralized trading platform enabling secure, fast, and trustless cryptocurrency exchanges. • Built an automated smart contract system for seamless real-estate transactions, removing intermediaries and reducing processing time. • Created a blockchain-powered supply chain solution that increases transparency, traceability, and operational efficiency across all stages.

80+ successful clients with 100% Success Score, developed web and mobile apps for them. I offer a 💯% money-back guarantee for 2 weeks if you are not satisfied with my work. I help startups and businesses build fast, scalable, and production-ready web and mobile applications. If you are looking for a versatile development partner who can help you from brainstorming or ideation to finalising requirements, to help you during the market research phase, from the frontend to the backend, and while choosing a tech stack, I am here as a Full Stack Developer with solid experience in React, Next, Node.js, TypeScript, APIs, react native, and modern web architecture. What I can help you build Custom Web Applications Cross-Platform Mobile Apps (iOS & Android) SaaS Platforms & Admin Dashboards E-commerce Solutions REST APIs & Backend Systems Payment Gateway Integrations Real-Time Applications Cloud-Based Scalable Infrastructure Technical Expertise 🚀 Frontend: React.js, Next.js, Vue.js, TypeScript, Tailwind CSS ⚙️ Backend: Node.js, Express.js, NestJS, REST APIs, Auth Systems 📱 Mobile: React Native, iOS/Android Apps, Push Notifications 🗄️ Database: MongoDB, PostgreSQL, MySQL, Redis ☁️ Cloud: AWS, Docker, CI/CD, Vercel, DigitalOcean Also, I can help you build: ✅ SaaS Platforms ✅ Custom Web Applications ✅ Dashboards & Admin Panels ✅ Startup MVPs ✅ AI-Powered Products ✅ API Integrations ✅ Authentication Systems ✅ Payment Integrations (Stripe, PayPal, and more) ✅ Scalable Backend Systems 👉Why clients work with me: ✔ Strong communication ✔ Fast response time ✔ Reliable delivery ✔ Clean & scalable code ✔ Product-focused development Also, I have experience with blockchain-based applications, wallet integrations, and Web3 products. I have built and maintained multiple DAOs, DeFi, and Crypto wallets for my clients from the USA, Canada, the UK, Poland, Germany, Saudi Arabia, and Spain. If you are building or improving a React.js, Next.js, or Node.js application, feel free to invite me to your project. Let's connect to discuss.

I am a highly skilled blockchain developer with over 7 years of experience specializing in Ethereum development, smart contract auditing, and blockchain security. I bring a deep understanding of Solidity, Web3, and decentralized applications (DApps) to deliver secure, efficient, and scalable blockchain solutions. My expertise includes: Smart Contract Development & Auditing: Comprehensive audits to identify vulnerabilities, ensure security, and optimize gas usage. Token Development: Expertise in creating ERC-20, ERC-721, and ERC-1155 tokens, with fully customized functionality. DeFi and NFT Projects: Proven experience in building and auditing DeFi protocols and NFT marketplaces. DApp Development: Building intuitive, decentralized applications using modern tools like Truffle, Web3.js, and Ethereum. Blockchain Security: Employing tools like Remix, MythX, and Slither for in-depth code analysis and gas optimization. With a strong focus on client satisfaction, I take pride in delivering clean, well-documented code and detailed audit reports. My past work includes successful collaborations on projects handling millions of dollars in Total Value Locked (TVL), ensuring the highest standards of quality and security. Why Choose Me? ✔ Thorough and detailed smart contract audits ✔ Proactive communication and timely delivery ✔ Industry-leading expertise in blockchain security Whether you're looking to build your next DApp, launch a DeFi protocol, or ensure your smart contracts are bulletproof, I’m here to help. Let’s create something exceptional together!

Building an AI agent or RAG demo is easy. Making it reliable, secure, observable, and cost-predictable in production is where most projects fail. I design, build, and rescue production AI systems on AWS for SaaS and enterprise teams. Expert-Vetted (Top 1% on Upwork) | 100% Job Success | $80K+ earned 2,700+ hours | 41 jobs | 3x AWS Professional certified (Generative AI, Solutions Architect, DevOps) | 4x AWS Community Builder | 9+ years CLIENTS BRING ME IN WHEN - An AI agent works in a demo but breaks with real users, tools, permissions, retries, or live business data - A RAG system retrieves the wrong context or produces weak citations - AI inference and cloud spend swing unpredictably month to month - A proof of concept needs production architecture, security, and a safe deploy and rollback path - Claude, OpenAI, or Amazon Bedrock must connect to real workflows - An AWS platform has reliability, scaling, security, or cost problems WHAT I BUILD AI Agents and Agentic Workflows - Multi-agent systems with LangChain, LangGraph, tool calling, and MCP - State management, tracing, approvals, and human-in-the-loop escalation - Deterministic fallback paths for when the model is the wrong tool Enterprise RAG and Knowledge Systems - Hybrid retrieval (dense embeddings + BM25), reranking, and citations - Vector stores: OpenSearch, Pinecone, Qdrant, pgvector, FAISS - Tenant isolation and access control for multi-tenant data LLM Integration and Evaluation - Claude, OpenAI, Amazon Bedrock, and open-source models - Prompt engineering, guardrails, evals, and regression tracing - Cost and latency optimization for production inference AWS Platform and Serverless - Event-driven systems: Lambda, API Gateway, DynamoDB, SQS, EventBridge, Step Functions - ECS, EKS, RDS, OpenSearch, ElastiCache - Terraform, AWS CDK, CloudFormation, SAM - IAM least-privilege, observability, incident recovery, cost optimization TECHNICAL STACK Python, Node.js, TypeScript | LangChain, LangGraph, MCP | Claude, OpenAI, Amazon Bedrock | OpenSearch, Pinecone, Qdrant, pgvector | AWS Lambda, DynamoDB, Step Functions, EventBridge | Terraform, CDK, Docker, Kubernetes SELECTED PRODUCTION OUTCOMES - 43% reduction in monthly Lambda cost - 55% improvement in processing time - Event-driven ordering platform handling millions of transactions per month with strict uptime and recovery requirements - Production integrations across Claude, OpenAI, and Amazon Bedrock I AM A GOOD FIT IF - You want a system that survives real users, not another demo - You have real workflows, data, or a running product to build on - You want senior ownership and clear architectural decisions I AM NOT THE FIT IF - You are exploring AI with no use case yet - Price matters more than reliability and outcomes HOW I WORK I do not start with a framework. I start with your workflow, your data, your permission model, your failure modes, and your operating cost. That includes telling you when not to build something. I have advised clients against AI agents where a deterministic workflow was safer, against RAG where a direct query was enough, and against managed services that add cost or lock-in without earning it. Guardrails, evals, and tenant isolation reduce risk and improve reliability; they do not eliminate hallucinations, and I will not claim they do. Send me your architecture, repo context, or the production issue you are stuck on. I will identify the highest-risk path to production and the smallest safe step to fix it.

👨🏻‍💻 Expert full-stack developer with 12+🕙 years of working experience in JavaScript web frameworks (Vue.js, Angular.js, React.js, Node.js, GraphQL, TypeScript, JavaScript, MySQL, PostgreSQL, etc) 😃 Enjoy the unparalleled proficiency of my development services, delivering extraordinary results! 📝 Prompt responses to any contract/invite within a span of two hours or less. 💯 100% Job Success Rate - Upwork 🔝🏅 Top Rated Developer - Top 10% at Upwork 🏆Top rated in D3.js Data Visualization 👨🏻‍💻 On-time development, top-notch code, flawless architecture, test-driven full-stack JavaScript developer. I am a passionate developer and have worked on many different kinds of systems, like an education management system, an e-commerce multi-vendor marketplace, enterprise resource planning systems, integration of Google APIs and other payment gateways. I am deeply interested in website, app, and mobile development with various advanced frameworks and programming languages. My Skills: ☑️ Programming Languages: PHP, JavaScript, TypeScript, Golang, Rust ☑️ Strong Knowledge of JavaScript Frameworks: Vue.js, React.js, Node.js, D3.js, Next.js ☑️ Strong Knowledge of PHP Frameworks: Laravel, CakePHP, Codeigniter. ☑️ Strong implementation Knowledge of HTML, HTML5, CSS, CSS3, Sass, Bootstrap ☑️ Strong Knowledge of Database: SQL (MySQL, SQLite, MsSQL, PostgreSQL) and NoSQL (MongoDB, Redis) ☑️ Payment Gateway Integration: Stripe, PayPal, RazorPay, Authorize.net, WorldPay ☑️ Version Control: SVN, GIT ☑️ Project Tracking: Atlassian, Jira, Trello, Asana Expect a professional approach from me as a Full-Stack JavaScript Developer with expertise in Vue, React, and Node.js development. I'm committed to an 8-hour workday, producing clean code, delivering optimal solutions, and contributing numerous innovative and creative ideas tailored to your requirements. 🏆 The client feedback on my profile illustrates the calibre of work and value you can anticipate when collaborating with me. 💡 Insider Hint: - If I do a job in 30 minutes, it's because I spent 12 years learning how to do that in 30 minutes. You owe me for the years, not the minutes. 😆 Much appreciated for learning about my profile! Reach out by inviting me to your Upwork job or sending a direct message, and let's begin this journey together. Best Regards! Khushang Bhavnagarwala

Building a successful blockchain product requires more than writing smart contracts. You need a developer who understands the entire ecosystem from secure contract development and wallet integrations to scalable backend systems and intuitive user experiences. That's where I can help. I am a Full Stack Developer with expertise in blockchain development and experience in building decentralized applications (dApps), DeFi platforms, NFT marketplaces, token ecosystems, staking platforms, crypto payment solutions, and Web3-enabled products. I combine modern blockchain development with strong full-stack engineering expertise to deliver secure, scalable, and user-friendly applications. What I Can Help You Build 🚀 Decentralized Applications (dApps) 🚀 DeFi Platforms 🚀 NFT Marketplaces 🚀 Staking & Yield Farming Systems 🚀 DAO Platforms 🚀 Token Launch Platforms 🚀 Crypto Payment Solutions 🚀 Web3 SaaS Applications 🚀 Blockchain Integrations 🚀 Smart Contract Development & Deployment Whether you're building an MVP, launching a new protocol, or expanding an existing blockchain product, I can help turn your vision into a production-ready solution. Blockchain & Technical Expertise • Solidity • Smart Contract Development • ERC-20 Tokens • ERC-721 NFTs • ERC-1155 NFTs • Ethereum • Polygon • Binance Smart Chain • Arbitrum • Base • Web3.js • Ethers.js • Hardhat • Foundry • OpenZeppelin Full Stack Development Skills Frontend: • React.js • Next.js • TypeScript • Vue.js • Tailwind CSS • HTML5 & CSS3 Backend: • Node.js • Express.js • NestJS • REST APIs • WebSockets • Authentication Systems Database & Infrastructure: • PostgreSQL • MongoDB • Redis • AWS • Docker • CI/CD Pipelines Why Work With Me? The blockchain space moves fast, but successful products are built on strong fundamentals. My combination of blockchain expertise and full-stack development experience allows me to bridge the gap between decentralized technologies and real-world business applications. If you're looking for a developer who can build secure smart contracts, create exceptional Web3 experiences, and contribute to your product's success, let's discuss your project and how I can help bring it to life. Let's connect to discuss.