Hi there👋! Zakir here😃, Are you looking for an expert Software and Website and Blockchain Developer ? I’m a developer and having more then 5 years of experience on building Software and websites and Blockchain for small and medium-sized businesses. Whether you’re trying to win work, list your services, or create a new online store, software's, I can help. 📊My stats 🏆Top Rated on Upwork 🚀 Fast Response 🚀 100% Job Success 💡My Core Skills: Knows ✅✅✅✅✅✅Full Stack Development Languages✅✅✅✅✅✅ ✅CSS 3 ✅SCSS ✅Microsoft VBScript ✅Dart ✅ASP ✅HTML ✅SQL ✅TypeScript ✅Sass ✅CSS ✅HTML5 ✅JavaScript ✅Python ✅C++ ✅Java ✅PHP ✅GraphQL ✅Twilio API ✅C# ✅ Visual Basic ✅✅✅✅✅✅ Web Servers ✅✅✅✅✅✅ ✅Cloudflare ✅Apache Tomcat ✅Microsoft IIS ✅Apache HTTP Server ✅NGINX ✅✅✅✅✅✅ Databases ✅✅✅✅✅✅ ✅SQLite ✅PostgreSQL ✅Oracle Database ✅MySQL ✅Microsoft Access ✅✅✅✅✅✅ Full Stack Development Skills ✅✅✅✅✅✅ ✅ASP.NET Web API ✅SaaS ✅Vue.js ✅Amazon Web Services ✅webpack ✅.NET Framework ✅Django ✅Netlify ✅ChatGPT ✅Spring MVC ✅Tailwind CSS ✅GitHub ✅React Bootstrap ✅RESTful API ✅.NET Compact Framework ✅Custom PHP ✅ASP.NET MVC ✅AJAX ✅ExpressJS ✅ASP.NET Core ✅ASP.NET ✅.NET Core ✅D3.js ✅Next.js ✅Git ✅CodeIgniter ✅Laravel ✅HTTP ✅Symfony ✅WordPress ✅XML ✅Google Cloud Platform ✅Vercel ✅React ✅Node.js ✅Responsive Design ✅jQuery ✅npm ✅Bootstrap ✅Apache Maven ✅Shopify ✅Figma ✅Elementor ✅Webflow ✅✅✅✅✅✅ Full Stack Development Deliverables ✅✅✅✅✅✅ ✅API Integration ✅Desktop Application ✅Website Redesign ✅Web Development ✅Chatbot ✅API Development ✅WordPress Plugin ✅Google Chrome Extension ✅Browser Extension ✅Web Application ✅Ecommerce Website ✅Full-Stack Development ✅Database Development ✅Postman ✅Python Test Automation ✅Framework Selenium ✅Git ✅Dapp Developer 🪄What I offer: - I use a data-driven approach to fully understand my target audience and project goals during development. - I prioritize user needs and preferences throughout the design process, ensuring intuitive and user-friendly interfaces. -I bring strong collaborative skills, working seamlessly with stakeholders, developers and cross-functional teams to bring designs from concept to implementation. - I conceptualize and design high-performing customer acquisition and retention pages with a focus on conversion rate optimization (CRO). I am truly excited about the possibility of contributing to the success of your project👩‍💻😁 Full project management from start to finish Regular communication is important to me, so let’s keep in touch. 📩 Sounds like a good fit? - Next Steps: Click the green ‘Send Message’ button in the top right-hand corner. 💫🚀Shoot me a message, let's create magic together!🤟 Md Zakir Hossain

𝐈 𝐟𝐢𝐱 𝐰𝐡𝐚𝐭 𝐀𝐈 𝐭𝐨𝐨𝐥𝐬 𝐜𝐚𝐧'𝐭 𝐟𝐢𝐧𝐢𝐬𝐡 𝙊𝙣𝙚 𝙒𝙚𝙚𝙠 𝙁𝙧𝙚𝙚 𝙒𝙤𝙧𝙠 𝙏𝙧𝙞𝙖𝙡 (𝗔𝗡𝗬 𝗗𝗘𝗩𝗘𝗟𝗢𝗣𝗠𝗘𝗡𝗧 𝗥𝗘𝗟𝗘𝗧𝗘𝗗 𝗪𝗢𝗥𝗞)🔥🔥🔥🔥🔥🔥 ✅ Artificial Intelligence & Generative AI Developer Specializing in GPT-4, RAG & OpenAI Integrations ✅ 15+ Years of Experience 🥇 Why Clients Recommend Me "Hiren was perfect for this job. He had skills and motivation to solve everything we faced. A++" "Hiren is awesome, thank you very much! Will hire again." "Is the first time that I work with Hiren, and he was absolutely amazing. I will rehire him for sure." 👨‍💻 My Specialized Services ✔️ Cloud Solution Architecting ✔️ Scaling your projects ✔️ Cloud and Data Migration ✔️ App Modernisation ✔️ Technical architecture and Product Solution ✔️ Startup Tech Consulting | Software Architecture ✔️ SaaS & MVP Development ✔️ AI/ML Integrations with Existing Software Projects ✔️ Product Development & Maintenance 🛠️ Skillsets & Experience ★ Consulting Startups: 10+ years ★ AWS and Google Cloud Solutions: 6+ years ★ Full Stack (MERN | React | Node.js | TypeScript): 8+ years ★ Next.js | API Development | Web3 Integrations: 5+ years ★ Building REST APIs: 5+ years ★ Third-party API / AI Integrations: 5+ years ★ PHP | Laravel: 7+ years ★ Ionic | Angular | Typescript: 3+ years ★ Databases (MySQL | Redis | MongoDB): 5+ years ★ HTML | CSS | JavaScript | jQuery: 8+ years 🏆 Achievements I Am Proud Of ● Led various client projects accumulating 300k users & $18m+ revenue ● Built AI integrations (GPT, ChatGPT, Vector Embeddings) for multiple projects ● Developed a Payroll Processing System for a Tax Department, Central Government of India ● Worked on System Design, Code Organization, and Architecture for 50+ software projects ● Built end-to-end systems: ERP, CRM, eCommerce, Marketing Automation, Web Scraping, etc. 🌟 What You Can Expect I fully understand your project requirements before starting, properly architect your product, build a solution which can scale to thousands of users.

- Highly skilled Software Engineer with 20+ years of experience in developing application for customers from different parts of the world. - I have successfully designed, developed, and supported live use applications. I provide exceptional contributions to customer service for all customers. - With a Software Engineering degree and being a Scrum Certified specialist, - I have a full understanding of the full life cycle of a software development project. I also have experience in learning and excelling at new technologies as needed. My Portfolio of WEB3/Blockchain Projects in Freelancing is available at dexbotdev.framer.ai - Technical Expertise & Frameworks: - React , NodeJS, Blockchain, Solidity, SpringBoot, Microservices, Web3, Java/J2EE, SOA, Oracle OSB, Webservices (Rest/SOAP), Digital Web, JavaScript, , XML,XSD,Jaxb, Ajax, Struts, PL/SQL, Spring MVC,Spring Boot, Hibernate, JPA,JSF,PrimeFaces,Ibatis, C#, VB.NET,D2K,Coolgen,EKBE,JUnit, Mockito,Android, Oracle 9i App server, Tomcat, BEA WebLogic, Oracle 8i,9i, MySQL 4.5,Informix, NoSQL, MongoDB , Node.js Smart Client 6.5.1 (AJAX RIA), EXTJs, jQuery, React.Js, React Native Development, GWT , GXT, ExtJs, Vaadin, Sencha ,Junit,Cucumber,PhantomJs, Nodejs,CasperJs ,EJB 3.0 - DB Expertise: MySQL, PostgreSQL, Oracle, MS Access, MongoDB

I build AI-powered software systems that help businesses automate operations, qualify opportunities, and scale faster without increasing manual workload. Over the last 7+ years, I’ve worked as a full-stack engineer building SaaS platforms, CRMs, and automation systems where AI is not just a feature — it’s part of the core decision-making process. Most of my work sits at the intersection of backend engineering, workflow automation, and LLM-based intelligence systems. In simple terms: I help businesses replace repetitive processes with smart, automated pipelines that actually make decisions. 𝗪𝗵𝗮𝘁 𝗜 𝘁𝘆𝗽𝗶𝗰𝗮𝗹𝗹𝘆 𝗯𝘂𝗶𝗹𝗱 I work across three main areas: 𝗔𝗜 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻 𝗦𝘆𝘀𝘁𝗲𝗺𝘀 I design workflows where LLMs (GPT, Claude, Gemini, etc.) handle classification, scoring, routing, and decision logic. This includes AI assistants, internal tools, and automation engines connected to real business APIs. 𝗦𝗮𝗮𝗦 & 𝗖𝗥𝗠 𝗣𝗹𝗮𝘁𝗳𝗼𝗿𝗺𝘀 Multi-tenant applications, dashboards, and subscription-based systems with Stripe billing, role-based access, and analytics layers. 𝗪𝗼𝗿𝗸𝗳𝗹𝗼𝘄 & 𝗕𝗮𝗰𝗸𝗲𝗻𝗱 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻 Custom Node.js / API-driven systems using n8n, webhooks, background jobs, and integrations that connect CRMs, databases, and third-party tools. 𝗙𝘂𝗹𝗹-𝘀𝘁𝗮𝗰𝗸 𝗱𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 I also handle end-to-end engineering when needed: React / Next.js frontends Node.js / NestJS / Express backends PostgreSQL / MongoDB systems Authentication (JWT, OAuth, RBAC) REST & GraphQL APIs Scalable system architecture For faster MVPs or Products, I also work with 𝗕𝘂𝗯𝗯𝗹𝗲.io and 𝗪𝗼𝗿𝗱𝗣𝗿𝗲𝘀𝘀— but always with proper backend structure behind them. 𝗦𝗲𝗹𝗲𝗰𝘁𝗲𝗱 𝗲𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 Built AI-powered chatbot systems using GPT-4 for real-time business interactions Developed CRM dashboards with automated lead qualification pipelines Designed SaaS platforms with Stripe billing, user segmentation, and analytics Created automation systems combining APIs, scraping, and LLM-based decision engines Delivered Web3 integrations including ERC-20 and DApp-based systems 𝗪𝗵𝗼 𝗜 𝘄𝗼𝗿𝗸 𝗯𝗲𝘀𝘁 𝘄𝗶𝘁𝗵 Founders building SaaS products or AI tools Businesses looking to automate operations or lead workflows Agencies scaling outreach or qualification systems Teams that want systems, not just websites 𝗛𝗼𝘄 𝗜 𝘄𝗼𝗿𝗸 I usually start by understanding the workflow first — not the feature list. 𝗧𝗵𝗲𝗻 𝗜 𝗯𝗿𝗲𝗮𝗸 𝗶𝘁 𝗶𝗻𝘁𝗼: What can be automated Where AI adds decision-making value How the backend should be structured for scale How the system should evolve over time The goal is always the same: reduce manual work and increase system intelligence. 𝗣𝗵𝗶𝗹𝗼𝘀𝗼𝗽𝗵𝘆 Software shouldn’t just execute tasks — it should help decide what happens next. That’s the type of systems I build.

Web3 and full-stack engineer building AI-integrated decentralized products. I ship smart contracts, LLM-powered agents, and the TypeScript infrastructure that connects them, from Solidity hooks to Next.js dashboards. What I built: - Smart contracts — Solidity with Foundry and Solady, gas-optimized ERC standards, DeFi primitives (AMMs, fee hooks, staking, liquidity management), Uniswap V2/V3/V4 integrations. - AI agents and integrations — LangChain, Claude, OpenAI, RAG systems, Model Context Protocol (MCP) servers, agentic automation pipelines that combine on-chain data with LLM reasoning. - Full-stack apps — TypeScript, Next.js, NestJS, Prisma, PostgreSQL, Express, Supabase, monorepo architectures with Turborepo. - Wallets and Web3 integrations — multi-chain (Ethereum, Polygon, Base & BNB, wallet development, ad-hoc scripting. Recent work: - Uniswap V4 Dynamic Fee Hook — volatility-aware LP fees using EWMA, built with Foundry and Solady - Gas-optimized ERC-20 deployment toolkit — published open source - Multi-LLM SaaS architecture (NestJS + React + Prisma monorepo) designed for agentic development workflows How I work: Architecture-first, security-conscious, documented as I go. I run two-week Scrum sprints with async standups, scope cleanly, and ship without needing hand-holding. Comfortable owning a project end-to-end or plugging into an existing engineering team. I work best with founders and technical teams who care about both the protocol layer and the product layer, and want one engineer Who can move across both? If you're building at the intersection of AI and Web3, send me a message and let's see if it fits.

I build blockchain and AI-powered fintech systems, DeFi platforms, crypto wallets, NFT marketplaces, and LLM-driven tools that run in production. 12+ years full-stack. 5+ years in blockchain and AI. I’ve worked on production-grade systems using Talisman, BCB, and Fireblocks handling real transactions, not prototypes. Recent work: -DeFi platforms with gas-optimized smart contracts and live liquidity systems -Custom crypto wallets with MetaMask, WalletConnect, and Fireblocks integration -AI automation tool writes, publishes, and ranks content on Google and LLM models, fully operated -from mobile -Fintech platforms with 40% user engagement lift and 25% cost reduction -LLM integrations and conversational AI systems for SMB workflows What I deliver:  -NFT marketplaces (minting, bidding, royalties, lazy minting)  -DeFi protocols (staking, swaps, AMMs, liquidity pools)  -Crypto wallets and payment systems (ERC-20, ERC-721, ERC-1155)  -Smart contract audits, security reviews, gas optimisation  -LLM and AI integrations on top of Web3 infrastructure  -Full-stack fintech platforms and MVPs  -Token development across Ethereum, Solana, Polygon I work hands-on. I get into the code when it's needed and make architecture calls when it's not. Clients say I'm easy to work with and that I actually know what I'm doing which in this space, matters more than it should. I also support founders on technical strategy and investor calls. I've been in those rooms before and can speak to architecture, security, and scalability in language investors understand. Stack: Stack: Solidity, Rust, Node.js, Python, TypeScript, React, Ethers.js, Web3.js, AWS, OpenAI Send me a message with what you're building. I'll tell you if I'm the right fit and if I'm not, I'll point you to someone who is. 𝐅𝐀𝐐𝐬 𝐐: Are you an agency? 𝐀: No. I don't have my own developers, nor am I affiliated with any development agency. This allows me to hire the 𝐛𝐞𝐬𝐭 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫𝐬 or 𝐚𝐠𝐞𝐧𝐜𝐢𝐞𝐬 for my clients. 𝐐: Can you work as a Developer? 𝐀: Yes. If a client wants to build an 𝐌𝐕𝐏 with minimum resources, I love to 𝐜𝐨𝐝𝐞. Q: How many hours will you spend on my project? 𝐀: As many as needed to deliver the 𝐬𝐜𝐨𝐩𝐞 we agreed on. I meet 𝐝𝐚𝐢𝐥𝐲 with most of the teams I work with. 𝐐: I raised capital. Can you join me on investor calls? A: Of course. I have gone through the 𝐟𝐮𝐧𝐝𝐫𝐚𝐢𝐬𝐢𝐧𝐠 𝐫𝐨𝐥𝐥𝐞𝐫𝐜𝐨𝐚𝐬𝐭𝐞𝐫 more than once. 𝐐: What do you think about technology XYZ? 𝐀: It's the 𝐛𝐞𝐬𝐭 𝐭𝐡𝐢𝐧𝐠 𝐞𝐯𝐞𝐫 but only if the problem it solves is the problem you actually have. 𝐀𝐯𝐚𝐢𝐥𝐚𝐛𝐢𝐥𝐢𝐭𝐲: Flexible, 𝐟𝐮𝐥𝐥-𝐭𝐢𝐦𝐞, 𝐩𝐚𝐫𝐭-𝐭𝐢𝐦e, or 𝐜𝐨𝐧𝐬𝐮𝐥𝐭𝐢𝐧𝐠 based on client needs. 𝐂𝐨𝐬t: Monthly billing or 𝐡𝐨𝐮𝐫𝐥𝐲, tailored to your project.

Senior Blockchain Developer | Smart Contracts | Web3 | DeFi | Solidity | Rust 𝐈’𝐦 𝐚 𝐅𝐮𝐥𝐥-𝐒𝐭𝐚𝐜𝐤 𝐖𝐞𝐛 & 𝐁𝐥𝐨𝐜𝐤𝐜𝐡𝐚𝐢𝐧 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 𝐰𝐡𝐨 𝐡𝐞𝐥𝐩𝐬 𝐛𝐮𝐬𝐢𝐧𝐞𝐬𝐬𝐞𝐬 𝐛𝐮𝐢𝐥𝐝 𝐬𝐞𝐜𝐮𝐫𝐞 𝐖𝐞𝐛𝟑 𝐬𝐲𝐬𝐭𝐞𝐦𝐬, 𝐡𝐢𝐠𝐡-𝐩𝐞𝐫𝐟𝐨𝐫𝐦𝐚𝐧𝐜𝐞 𝐌𝐄𝐑𝐍 𝐚𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬, 𝐚𝐧𝐝 𝐚𝐮𝐭𝐨𝐦𝐚𝐭𝐞𝐝 𝐜𝐫𝐲𝐩𝐭𝐨 𝐬𝐨𝐥𝐮𝐭𝐢𝐨𝐧𝐬. With 5+ years of experience and 10+ successful projects, I deliver clean, scalable and production-ready systems that drive real results. 𝐂𝐨𝐫𝐞 𝐒𝐞𝐫𝐯𝐢𝐜𝐞𝐬: 🔹𝐁𝐥𝐨𝐜𝐤𝐜𝐡𝐚𝐢𝐧 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 1. Smart Contracts (Ethereum, Solana, BSC, Polygon) 2. Token Development (ERC-20, BEP-20) 3. Presale & Launchpad Platforms 4. NFT Marketplaces & Web3 dApps 5. Arbitrage, Sniping, Volume & Copy-Trading Bots 6. Crypto Wallet Integrations 🔹𝐅𝐮𝐥𝐥-𝐒𝐭𝐚𝐜𝐤 𝐖𝐞𝐛 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 1. ReactJS, Next.js, Typescript 2. NodeJS, ExpressJS, GraphQL 3. MERN Stack Applications 4. REST APIs, Microservices 5. Python Integrations 6. High-performance UI/UX 🔹𝐁𝐨𝐭𝐬 & 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧 Trading Bots (CEX + DEX) Telegram Bots (Alerts, Trading, Automation) AI-Powered Automation Workflows 𝐖𝐡𝐲 𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐇𝐢𝐫𝐞 𝐌𝐞: 1. Built Web3 platforms reaching $20M+ token market cap 2. Delivered 40+ crypto trading bots 3. Migrated 50+ React/Next.js apps to latest versions 4. Provided end-to-end deployments for global clients 5. Fast communication + daily updates + documented code 𝐓𝐞𝐜𝐡 𝐒𝐭𝐚𝐜𝐤: 1. ReactJS • Next.js • Typescript • NodeJS • Express • GraphQL • Python 2. MongoDB • MySQL • PostgreSQL 3. Ethereum • Solana • BSC • Polygon • TRON 4. AWS • Docker • Kubernetes • CI/CD 𝐌𝐲 𝐖𝐨𝐫𝐤 𝐒𝐭𝐲𝐥𝐞: ✔ Clean, scalable, and secure code ✔ On-time delivery ✔ Transparent communication ✔ Full deployment & post-launch support 𝐋𝐞𝐭’𝐬 𝐖𝐨𝐫𝐤 𝐓𝐨𝐠𝐞𝐭𝐡𝐞𝐫 If you need a reliable developer for blockchain projects, full-stack applications, or automation systems, feel free to message me. I’m available to discuss your project anytime. 𝐁𝐞𝐬𝐭 𝐫𝐞𝐠𝐚𝐫𝐝𝐬, #Blockchain #BlockchainDeveloper #Web3 #Web3Developer #Crypto #Cryptocurrency #SmartContracts #Solidity #Ethereum #EVM #DApp #DAppDeveloper #DeFi #DeFiDeveloper #Web3Engineering #TokenDevelopment #CryptoWallet #NFT #NFTDevelopment #NFTMarketplace #Metaverse

🚀 Fullstack Solution Architect | 12+ Years Building Scalable Web, Mobile & SaaS Products I help founders and businesses turn ideas into high-performance, production-ready applications. If you need someone who can architect your system, build it end-to-end, optimize performance, and support long-term growth — I’m the person for the job. I’ve delivered 100+ projects across SaaS platforms, mobile apps, enterprise systems, and blockchain solutions. ✅ What I Build 💻 SaaS Platforms & Web Applications • System architecture and backend engineering • Microservices, REST/GraphQL APIs • High-performance dashboards, admin panels, automation systems • Scalable cloud infrastructure (AWS, Docker, CI/CD) 📱 Mobile App Development • Cross-platform apps (React Native, Flutter) • Native iOS & Android (Swift, Kotlin) • eCommerce, on-demand, fintech, logistics, healthcare 🔌 API Development & Integrations • Payment systems (Stripe, PayPal) • Real-time tech: WebSockets, Firebase, Pusher • CRM & ERP: HubSpot, Salesforce, QuickBooks 🔗 Blockchain & Web3 • Smart contracts (Solidity) • NFT platforms, wallet integration, DeFi tools • Secure Web3 APIs and dApps 🎯 Why Clients Choose Me • 12+ years of full-cycle development experience • 100+ successful projects delivered worldwide • Strong architecture & system design background • Clean, scalable, maintainable code • Clear communication and ongoing support options 📩 Let’s Work Together Whether you need an MVP, a full product build, or a long-term technical partner, I’m ready to help. Send me a message — let’s bring your idea to life.

Welcome to my profile. I am a Blockchain developer and help my clients to build dapps and make business grow. What I have experienced are EVM, Solana, Xrp and Ton. I already completed DEX, Bridges, NFT, Presale, Airdrop and Staking on several chains. I have played pivotal role in the development, project architecture, marketplace design and game mechanics - My Service will include 🔹DApp development: Develop ICOs, IDOs, staking, multi swap, bridges, DEXs and CEXs. 🔹 NFT Solutions: Develop NFT minting website, NFT staking, Launchpad and marketplaces 🔹 Smart Contract Auditing: Audit smart contracts with solidity, Rust and Func 🔹 Bot development: Already have Volume bot, Copy trading bot and holder maker bots and ready to help bot you want I will prioritize the safety and bug-free project for your business and ensure your requirements to perfect products and make it successful.

Hi 🟢 𝗔𝘃𝗮𝗶𝗹𝗮𝗯𝗹𝗲 𝗡𝗼𝘄 🚀 Softstack, 🇩🇪 Industry Leader in S𝗺𝗮𝗿𝘁 𝗖𝗼𝗻𝘁𝗿𝗮𝗰𝘁 𝗔𝘂𝗱𝗶𝘁s & Full-Stack 𝗪𝗲𝗯𝟯 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 with 𝗭𝗘𝗥𝗢 𝗘𝗫𝗣𝗟𝗢𝗜𝗧 record 🤝 ✨ Over 9 years of dedicated Web3 engineering and security audit experience 💡 Specialized in Smart Contract Audits with 𝗭𝗘𝗥𝗢 𝗘𝗫𝗣𝗟𝗢𝗜𝗧𝗦 across 1,200+ reviews 💻 Built and secured dApps on Ethereum, Solana, Aptos, Sui, TON and Layer 2 networks 🌠 Delivered vetted engineer support to Ripple, BitGo, Anchorage Digital and more ⏱ Rapid-response engagements with turnkey teams ready in 48 hours 📈 Proven track record of high-assurance code, gas optimization and MiCA compliance 🗣 Fluent English & German and seamless collaboration under short-term agency agreements