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I have expertise in Blockchain, Web and Mobile Applications, AI, SaaS, and custom solutions. We deliver scalable and secure products with Full Stack Development (MERN, React, Node.js, Vue), Mobile Applications (React Native, Flutter), Web3, Smart Contracts, and AI Platforms. We provide technical, industrial and result oriented development of products which scale and perform, taking example of one of our projects, a coffee shop based in Mexico which is generating revenue through a Custom Menu App which is developed by us and they are raising money through a Fundraising Platform built by our team, they have successfully raised 500k+ USD proving the scalability and business model. WHAT WE OFFER Blockchain and Web3: We offer Blockchain Development and Smart Contracts ( ERC1155 / ERC721 / ERC20 ), Marketplaces, and NFT Platforms. We have our expertise in ICO and Token Launches, dApps, and Wallet Integration. Web and Mobile Application Development: SaaS platforms and customized apps, including Mobile Apps (iOS and Android) and Web Applications, are what we are experts in. Moreover, we make admin dashboards and different portals as well. AI, ML & Generative AI: AI Applications, Chatbots, AI search, Vector databases, Semantic search, ChatGPT integration and Open AI are some technologies we work on. Furthermore, we provide fine Prompt Engineering and LLM solutions. UI/UX & Video Production: We provide Prototyping, UI/UX, Product and Explainer videos to help you grow. Support & Maintenance: We offer ongoing technical support, performance monitoring, security updates, bug fixes, and system optimization to ensure long-term stability and scalability of your digital products. Technology Stack Frontend: React.js, Next.js, Redux, Vue.js, Vuex, Nuxt.js, Tailwind CSS, Bootstrap, GatsbyJS Backend: Node.js, Express, NestJS, Sails, Python, Django, Flask, PHP, Laravel, Ruby on Rails Mobile: React Native, Flutter, Swift, iOS, Android. AI & ML: Generative AI, LLM, LangChain, Cohere, Vector Databases, Semantic Search Cloud & DevOps: AWS (EC2, S3, Lambda, DynamoDB, MWS), Firebase, Google Filestore, Docker, Kubernetes. Database: MySQL, PostgreSQL, MongoDB, Firebase. Integrations: Stripe, Google Maps, Mapbox. CMS & eCommerce: WordPress, Shopify, WooCommerce, Webflow. Why Clients Choose Us: Clients choose because they look for the founder's involvement & agile approach including daily and weekly project updates and clarity. We offer unlimited design revisions and free post launch support for 2 months. We provide custom, scalable and SEO friendly solutions. We work across different time zones with devoted project managers and QAs. Serving diverse industries: EdTech, FinTech, Healthcare, Travel, Sports, Entertainment, Fashion, Food & Beverages, and more Global collaboration: working across time zones with dedicated project management and QA We don’t just make applications, we build solutions that impact, perform, and enhance business potential. LAST UPDATED: 2/20/2026 #WebDevelopment #FullStackDevelopment #SoftwareDevelopment #CustomSoftware #ProductDevelopment #EnterpriseSoftware #SystemArchitecture #LegacyMigration #ApplicationDevelopment #MERN #JavaScriptStack #ModernWebStack #T3Stack #ServerlessStack #VercelStack #JavaScript #TypeScript #PHP #Python #GoLang #Rust #CPlusPlus #SQL #React #NextJS #VueJS #Angular #FrontendDevelopment #UIUXDesign #ResponsiveDesign #TailwindCSS #Redux #Zustand #FramerMotion #ShadcnUI #NodeJS #NestJS #Laravel #BackendDevelopment #APIDevelopment #GraphQL #Microservices #ExpressJS #Django #FastAPI #StripeIntegration #MongoDB #MySQL #Redis #Firebase #Supabase #NoSQL #AWS #GoogleCloud #CloudNative #DevOps #CI/CD #GitHubActions #Kubernetes #Vercel #AppDevelopment #MobileAppDevelopment #CrossPlatform #HybridApps #MobileSolutions #PWAs #Flutter #SwiftUI #Kotlin #Dart #Firebase #Supabase #APIDevelopment #BackendDevelopment #CI/CD #AWS #GoogleCloud #DevOps #Shorebird #Web3 #BlockchainDevelopment #BlockchainDevelopment #BlockchainDevelopment #SmartContracts #DAppDevelopment #DeFi #NFTDevelopment #CryptoWallet #DEX #DAO #Ethereum #Solidity #SolidityDeveloper #Hardhat #EthersJS #Anchor #Wasm #GenerativeAI #LLMIntegration #OpenAI #LangChain #AIAgents

Hi! 👋 I’m an Economist and Data Science expert with over 3+ years of experience in Python, R, Stata, Excel (with macros), SQL, Social Science Research, Market Research, Machine Learning, Academic Writing and Proofreading. You’ve come to the right place for high quality research work, data cleaning, visualization, and academic writing. 🎖️ 3+ years of experience 🏆 Top-Rated Upwork talent 🥇 Economics & Data Science Expert 💯 100% Job Success Score ⭐️ All 5-star reviews ⏱️ 100+ hours worked 💼 10+ completed jobs ☑️ Identity verified 🚀 Think tanks, non-profits, and academia expertise I can help you clean real-world messy datasets, analyse them in your programming language of choice with machine learning tools, illustrated with stunning visualizations, insightful interpretation, and extensive report and/or academic writing. I have diverse expertise conducting research and data analysis in social sciences, applied mathematics, markets, and firms. I have worked with academic scholars, industry professionals, entrepreneurs, consultants, businesses, non-profit organizations, and think tanks. Here’s more on what I bring to the table: ✅ A deep understanding of the complete research cycle ranging from writing strong elaborate proposals to publication-ready manuscripts. ✅ Constant gauging of industry-relevant trends and mastery of modern tools ✅ A proven and reliable process to deliver tailored results with plenty of room for feedback and reiteration. Skills: ✅ Data Analytics: Python, R, SQL, SPSS, Excel (with macros), ArcGIS/QGIS ✅ Machine Learning: Libraries (Pandas, NumPy, Matplotlib, Seaborn, PyTorch, TensorFlow, Supervised & Unsupervised Learning) ✅ Fields: Economics, Political Science, Sociology, International Relations, Applied Mathematics, Statistics ✅ Academic Research: Literature Review, Problem/Hypothesis Scoping, Data Cleaning & Analysis, Reporting, Writing, Proofreading ✅ Non-Academic Research: Industry Standard Writing, Report Writing (for specific audiences), Presentation Formatting I can work independently with minimal supervision as well as in a team. I’m also able to work with flexible hours, constant availability, and across different timezones. Let’s connect to discuss how I can be of help to you. ✅ Hire me now or invite me to your job posting. ✅ Message me and tell me about your project. Looking forward to working for you! 🤝 Ashutosh G. Top Rated Freelancer

Blockchain Development 🚀, DeFi Systems 💸, AI Agents & Autonomous Systems 🧠, Tokens & NFTs 🎨, Scalability & Performance ⚡ Hello, I’m Haider, a seasoned developer with 9+ years of experience and over 350 successful projects. I specialize in blockchain and AI development, delivering solutions for startups and established businesses looking to innovate in Solana, DeFi, Smart Contract, Web3, and more. My expertise spans the full lifecycle of product development, from architecture and coding to deployment and scaling. Clients benefit from my deep technical knowledge and commitment to creating secure, scalable, and efficient systems that deliver measurable value. Blockchain Development 🚀 Smart Contracts (Solidity): Secure, gas-optimized contracts with audit readiness Ethereum & EVM Chains: Comprehensive development on EVM-compatible networks dApp Development: Seamless full-stack decentralized application development Web3 Integration: Wallet connectivity and comprehensive on-chain data handling Custom Protocol Design: Tailored blockchain architectures for specific needs DeFi Systems 💸 * Protocols for lending & borrowing, staking, yield farming * Development of DEXs, AMMs, and sophisticated tokenomics AI Agents & Autonomous Systems 🧠 * Design and deployment of AI Agents * On-chain AI integration and LLM usage * Creation of multi-agent systems and automation pipelines Tokens & NFTs 🎨 * ERC-20, ERC-721, ERC-1155 token development * NFT platforms with utility-driven ecosystems Scalability & Performance ⚡ * Implementation of Layer 2 solutions * Strategies for gas optimization and high-throughput architecture Let’s discuss how we can turn your complex ideas into reality. Contact me to start building your next successful project.

Hello, I'm Harsh, an accomplished developer with over 8 years of hands-on experience in crafting dynamic web and app solutions . My journey began in a dynamic IT company where I honed my skills while collaborating on innovative projects. Now, I've embarked on a freelancing adventure to bring my expertise directly to clients like you. ➡️Our Tech-Stack- ➡️Front-end ✅HTML ✅CSS ✅Tailwind Css ✅Material UI ✅Bootstrap ✅JavaScript ✅TypeScript ✅React.js ✅Next.js ✅React Native ✅Redux ➡️Back-end ✅Node.js ✅Express.js ✅Flask ✅Django ➡️Databases ✅MongoDB ✅MySQL ➡️DevOps ✅Linux ✅Git ✅GitHub ✅Docker ✅CI/CD ➡️Cloud Services ✅AWS (EC2, Amplify, S3, Route53, RDS etc.) ✅GCP ✅Digitalocean ✅Hostinger ✅Godaddy ➡️UI/UX Design ✅Figma ✅Adobe XD ➡️Blockchain ✅Solidity ✅Web3.js ✅ Ether.js

Need a secure Solidity smart contract, DeFi module, or crypto payment backend that can safely handle real transactions? I build production-ready Blockchain, Solidity, and Node.js/NestJS systems for Web3 startups backed by 100% Job Success, $10K+ Upwork earnings, and a CEH-certified security background. My strongest fit is where smart contracts and backend infrastructure meet: Solidity logic, wallet flows, APIs, databases, transaction processing, deployment, and post-launch reliability. I work with founders, CTOs, and product teams who need more than code. They need safe contracts, reliable APIs, clean architecture, and systems that can handle real users and real transactions. I also bring a CEH-certified security mindset, so security is considered from architecture stage, not added as an afterthought. What I Can Build for You • Secure Solidity smart contracts for ERC-20, ERC-721, ERC-1155, staking, vesting, escrow, token launches, and DeFi logic • High-performance Web3 backends using Node.js, NestJS, TypeScript, PostgreSQL, Redis, Docker, and AWS • Crypto payment systems including USDT escrow flows, wallet dashboards, deposits, withdrawals, and transaction processing • DeFi products including token swaps, bonding curves, liquidity automation, and real-time pricing • Smart contract integrations with React, Next.js, MetaMask, Ethers.js, Web3.js, Wagmi, and RainbowKit • System improvements including smart contract review, gas optimization, API cleanup, backend hardening, and production deployment Proof From Past Work • 100% Job Success on Upwork • Rising Talent profile status • CEH-certified security background • Experience across crypto escrow, ERC-20 swaps, fair-launch token platforms, NFT marketplaces, SaaS infrastructure, secure APIs, wallet flows, and transaction-heavy Web3 backends Client feedback from past work: “Delivered production-ready code with no hand-holding.” “Technically strong in blockchain concepts and proactive in solving issues.” “Delivered clean, well-structured code on time.” Core Technical Stack Blockchain: Solidity, Ethereum, Polygon, Arbitrum, Base, Hardhat, Foundry, OpenZeppelin, Ethers.js, Web3.js, Wagmi, MetaMask, IPFS, Chainlink Backend & Infrastructure: Node.js, NestJS, TypeScript, PostgreSQL, Redis, Docker, AWS, Nginx, CI/CD Frontend Integration: React, Next.js, wallet flows, dashboards, smart contract integrations Let’s Build It Right Send me your project details... what you’re building, where you’re stuck, or what you need secured. I’ll help you define the safest technical path and build a stable, production-ready system around it.

👑𝐁𝐥𝐨𝐜𝐤𝐜𝐡𝐚𝐢𝐧 𝐂𝐨𝐧𝐬𝐮𝐥𝐭𝐚𝐧𝐭₿⃨ 🥇10+ years of 𝑺𝑶𝑳𝑰𝑫 experience 🕒 24*7 ✨ With over 10+ years of high-demand experience in 𝗯𝗹𝗼𝗰𝗸𝗰𝗵𝗮𝗶𝗻 𝗱𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁, I specialize in delivering robust 𝗳𝗿𝗼𝗻𝘁-𝗲𝗻𝗱 and 𝗯𝗮𝗰𝗸-𝗲𝗻𝗱 solutions for 𝗯𝗹𝗼𝗰𝗸𝗰𝗵𝗮𝗶𝗻-𝗽𝗼𝘄𝗲𝗿𝗲𝗱 𝗮𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻𝘀. My expertise covers comprehensive smart contract development, including 𝗦𝗼𝗹𝗶𝗱𝗶𝘁𝘆 and 𝗥𝘂𝘀𝘁 for platforms like 𝗘𝘁𝗵𝗲𝗿𝗲𝘂𝗺 and 𝗦𝗼𝗹𝗮𝗻𝗮. I excel in architecting, implementing, and auditing 𝗱𝗲𝗰𝗲𝗻𝘁𝗿𝗮𝗹𝗶𝘇𝗲𝗱 solutions tailored for industries like 𝗙𝗶𝗻𝘁𝗲𝗰𝗵, where 𝘁𝗼𝗸𝗲𝗻𝗶𝘇𝗮𝘁𝗶𝗼𝗻, 𝘀𝗲𝗰𝘂𝗿𝗶𝘁𝘆, 𝗮𝗻𝗱 𝘀𝗰𝗮𝗹𝗮𝗯𝗶𝗹𝗶𝘁𝘆 are essential. By leveraging blockchain’s power, I create innovative applications that support 𝗱𝗲𝗰𝗲𝗻𝘁𝗿𝗮𝗹𝗶𝘇𝗲𝗱 𝗳𝗶𝗻𝗮𝗻𝗰𝗲 (𝗗𝗲𝗙𝗶), 𝗻𝗼𝗻-𝗳𝘂𝗻𝗴𝗶𝗯𝗹𝗲 𝘁𝗼𝗸𝗲𝗻𝘀 (𝗡𝗙𝗧𝘀), 𝐒𝐦𝐚𝐫𝐭 𝐂𝐨𝐧𝐭𝐫𝐚𝐜𝐭 𝐀𝐮𝐝𝐢𝐭𝐨𝐫 and 𝗮𝗱𝘃𝗮𝗻𝗰𝗲𝗱 𝘀𝗺𝗮𝗿𝘁 𝗰𝗼𝗻𝘁𝗿𝗮𝗰𝘁 functionality, ensuring secure and efficient solutions. My approach includes precise requirement 𝗮𝗻𝗮𝗹𝘆𝘀𝗶𝘀, 𝘀𝘁𝗿𝗮𝘁𝗲𝗴𝗶𝗰 𝗽𝗹𝗮𝗻𝗻𝗶𝗻𝗴, 𝗲𝗳𝗳𝗶𝗰𝗶𝗲𝗻𝘁 𝗰𝗼𝗱𝗶𝗻𝗴, 𝘁𝗵𝗼𝗿𝗼𝘂𝗴𝗵 𝗱𝗲𝗯𝘂𝗴𝗴𝗶𝗻𝗴, 𝗮𝗻𝗱 𝘀𝗲𝗮𝗺𝗹𝗲𝘀𝘀 𝗱𝗲𝗽𝗹𝗼𝘆𝗺𝗲𝗻𝘁. With minimal supervision, I ensure each stage aligns with project goals, producing solutions that are both innovative and reliable. 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀 : - ============================================================================= 🔥𝗕𝗹𝗼𝗰𝗸𝗰𝗵𝗮𝗶𝗻: 𝗕𝗶𝘁-𝗰𝗼𝗶𝗻, 𝗘𝘁𝗵𝗲𝗿𝗲𝘂𝗺, 𝗦𝗼𝗹𝗮𝗻𝗮 ,𝗘𝗢𝗦, 𝗛𝘆𝗽𝗲𝗿𝗹𝗲𝗱𝗴𝗲𝗿, 𝗦𝘂𝗯𝘀𝘁𝗿𝗮𝘁𝗲, 𝗡𝗙𝗧, 𝗦𝗼𝗹𝗶𝗱𝗶𝘁𝘆: 𝗲𝗿𝗰𝟮𝟬/𝗗𝗲𝗙𝗶, 𝗲𝗿𝗰𝟳𝟮𝟭/𝗡𝗙𝗧. 🔥𝗙𝗿𝗼𝗻𝘁-𝗲𝗻𝗱: 𝗥𝗲𝗮𝗰𝘁.𝗷𝘀, 𝗡𝗲𝘅𝘁, 𝗝𝗮𝘃𝗮𝗦𝗰𝗿𝗶𝗽𝘁 (𝗘𝗦𝟲), 𝗧𝘆𝗽𝗲𝗦𝗰𝗿𝗶𝗽𝘁, 𝗔𝗻𝗴𝘂𝗹𝗮𝗿, 𝗩𝘂𝗲.𝗷𝘀 🔥𝗕𝗮𝗰𝗸-𝗲𝗻𝗱: 𝗡𝗼𝗱𝗲.𝗷𝘀, 𝗣𝗛𝗣 𝗟𝗮𝗿𝗮𝘃𝗲𝗹, 𝗙𝗶𝗿𝗲𝗯𝗮𝘀𝗲. 🔥𝗗𝗕: 𝗠𝘆𝗦𝗤𝗟, 𝗠𝗼𝗻𝗴𝗼 𝗗𝗕 𝗣𝘂𝗯𝗹𝗶𝗰 𝗕𝗹𝗼𝗰𝗸𝗰𝗵𝗮𝗶𝗻 𝗣𝗹𝗮𝘁𝗳𝗼𝗿𝗺𝘀: - ============================================================================= ✔ 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗶𝗻𝗴 𝘀𝗺𝗮𝗿𝘁 𝗰𝗼𝗻𝘁𝗿𝗮𝗰𝘁𝘀 𝘂𝘀𝗶𝗻𝗴 𝗮 𝗦𝗼𝗹𝗶𝗱𝗶𝘁𝘆 𝗽𝗿𝗼𝗴𝗿𝗮𝗺𝗺𝗶𝗻𝗴 𝗹𝗮𝗻𝗴𝘂𝗮𝗴𝗲. ✔ 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗶𝗻𝗴 𝗥𝗣𝗖 𝘂𝘀𝗶𝗻𝗴 𝗰𝗹𝗶𝗲𝗻𝘁 𝗹𝗶𝗯𝗿𝗮𝗿𝗶𝗲𝘀 𝘀𝘂𝗰𝗵 𝗮𝘀 𝗪𝗲𝗯𝟯 ✔ 𝗦𝘁𝗮𝘁𝗶𝗰 𝗮𝗻𝗮𝗹𝘆𝘀𝗶𝘀 𝗼𝗳 𝘀𝗺𝗮𝗿𝘁 𝗰𝗼𝗻𝘁𝗿𝗮𝗰𝘁𝘀 𝗳𝗼𝗿 𝗴𝗮𝘀 𝗰𝗼𝗻𝘀𝘂𝗺𝗽𝘁𝗶𝗼𝗻 𝗮𝗻𝗱 𝗼𝗽𝘁𝗶𝗺𝗶𝘇𝗮𝘁𝗶𝗼𝗻 𝘂𝘀𝗶𝗻𝗴 𝗥𝗲𝗺𝗶𝘅 𝗜𝗗𝗘. ✔ 𝗦𝗲𝗰𝘂𝗿𝗶𝗻𝗴 𝘀𝗺𝗮𝗿𝘁 𝗰𝗼𝗻𝘁𝗿𝗮𝗰𝘁𝘀 𝘂𝘀𝗶𝗻𝗴 𝗹𝗶𝗯𝗿𝗮𝗿𝗶𝗲𝘀 𝗹𝗶𝗸𝗲 𝗢𝗽𝗲𝗻𝗭𝗲𝗽𝗽𝗲𝗹𝗶𝗻. ✔ 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗶𝗻𝗴 𝗘𝘁𝗵𝗲𝗿𝗲𝘂𝗺 𝗱𝗮𝗽𝗽𝘀 𝘂𝘀𝗶𝗻𝗴 𝘁𝗵𝗲 𝗧𝗿𝘂𝗳𝗳𝗹𝗲 𝗳𝗿𝗮𝗺𝗲𝘄𝗼𝗿𝗸. ✔ 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻 𝘄𝗶𝘁𝗵 𝗰𝗿𝘆𝗽𝘁𝗼 𝘄𝗮𝗹𝗹𝗲𝘁𝘀 𝘀𝘂𝗰𝗵 𝗮𝘀 𝗠𝗲𝘁𝗮𝗺𝗮𝘀𝗸. ✔ 𝗦𝗸𝗶𝗹𝗹𝗲𝗱 𝗶𝗻 𝗹𝗲𝘃𝗲𝗿𝗮𝗴𝗶𝗻𝗴 𝗦𝗣𝗟 𝗹𝗶𝗯𝗿𝗮𝗿𝗶𝗲𝘀 𝗳𝗼𝗿 𝗿𝗮𝗽𝗶𝗱 𝗱𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 ✔ 𝗗𝗲𝗽𝗹𝗼𝘆𝗶𝗻𝗴 𝘀𝗺𝗮𝗿𝘁 𝗰𝗼𝗻𝘁𝗿𝗮𝗰𝘁𝘀 𝗼𝗻 𝘁𝗲𝘀𝘁 𝗻𝗲𝘁𝘄𝗼𝗿𝗸𝘀 𝘀𝘂𝗰𝗵 𝗮𝘀 𝗿𝗼𝗽𝘀𝘁𝗲𝗻/𝗿𝗶𝗻𝗸𝗲𝗯𝘆 𝗮𝘀 𝘄𝗲𝗹𝗹 𝗮𝘀 𝗘𝘁𝗵𝗲𝗿𝗲𝘂𝗺 𝗺𝗮𝗶𝗻𝗻𝗲𝘁. I'm always ready to provide efficient, impactful assistance and to take on new challenges swiftly. If you need any of the services mentioned, feel free to reach out—I'm prepared to dive in and deliver exceptional results! I pride myself on identifying the most cost-effective, high-quality solutions for every opportunity I encounter. Thank you for considering my profile! #BlockchainConsultant #SmartContracts #DecentralizedApps #Solana #Ethereum #Bitcoin #DeFi #NFT #Web3 #CryptoDevelopment #BlockchainExpert #FullStackBlockchain #SolidityDev #FintechSolutions #Tokenization #SmartContractAuditing #FrontEndBlockchain #BackendArchitecture #ReactJS #NodeJS #Laravel #MongoDB #MySQL #MetamaskIntegration #OpenZeppelin #TruffleFramework #CryptoWalletIntegration #BlockchainInnovation #TechnologyConsultant #TechLeadership #CostEffectiveSolutions #ReadyToCode