I've been working on Blockchain-related projects since 2019. Besides that, I've been doing back-end / embedded / system software development since 2011. I designed and develop many back-end applications for Windows and Linux Platform. Major programming languages I've used are Solidity/Solana(Rust)/Web3/JavaScript/Go-lang/C/C++, plus few popular scripting languages. I've also experienced Truffle, Hardhat, Ganache, STL, Boost, multithreading, IPC, Socket Programming, etc My areas of expertise: ✅ Token Implementation: ERC-20, ERC-721, ERC-721A, ERC1155, ERC-1363, Web3 ✅ Smart contract security audit (EVM and SOLANA) ✅ Block-chain dApps: Defi, Metaverse, NFT, DAO, IDO LaunchPad, Staking, Lending/Borrow. ✅ Payments integrations with Stripe, Coinbase (Bitcoin, Ethereum, etc.) ✅ Block-chain Plugin: metamask, trustwallet, Binance Wallet, etc. ✅ VoIP Software: SIP, H.323, Kamailio, OpenSIPS, rtpengine, RTPProxy, FreeSWITCH, Asterisk. ✅ Networking firewall designing (IPTables, DHCP, PPPOE, STUN, ICE.) Programing Language: Solidity, Solana(Rust), Vyper, Web3, JavaScript, Go-Lang, C, C++ Blockchain Stack: Web3, Ether.js, Truffle, Hardhat, MetaMask/Remix, BTC, ETH, IBM Hyperledger, IPFS I really appreciate your quick response and love to discuss this project further with you.

I build, deploy, fix, and scale real blockchain products. Smart contracts, DeFi systems, token infrastructure, trading bots, and full EVM and Solana dApps. Not toy contracts and not slide-deck promises, working systems that get deployed and used. I have spent 4+ years working hands-on with smart contracts and on-chain systems. I have written and shipped Solidity contracts, designed token launch mechanics, built and refactored DeFi logic, integrated contracts with real frontends and backends, and built off-chain tooling like Telegram trading bots and wallet analytics that has to keep up with live markets. I can take a founder from a rough idea to a deployed, tested, integrated system without needing three other people to fill the gaps. What I build: Smart contracts and token systems. ERC20 tokens, ERC721 and ERC1155 NFTs, and hybrid token-NFT designs. Plus the infrastructure most launches actually need: staking, vesting, presale and fair-launch logic, token lockers, and LP lockers. I care about the details that get projects burned, like making a token genuinely non-mintable when that is the goal, getting ownership and access control right, and removing the footguns before they become an exploit. DeFi and Uniswap. Extensive work with Uniswap v3 and v4, including v4 hooks, where the interesting design space is. Basket and index mechanics, fee routing through hooks, and DeFi systems with real game-theory rather than copy-paste forks. I am comfortable refactoring an existing Solidity system into something cleaner and safer, which is usually what a founder with a half-finished codebase actually needs. Trading bots and on-chain intelligence. Telegram trading and sniper bots with multi-wallet support, deployer and funding wallet separation, bulk dispersal, same-block execution targets, PnL tracking, and encrypted key handling. Wallet tracking that surfaces profitable wallets, and detection bots that flag bundled launches, concentrated developer wallets, and abnormal sell behavior. Built for uptime with Node.js, TypeScript, MongoDB, and Railway. Solana. Beyond EVM, I build on Solana too: token locking dApps, SocialFi and trading-agent concepts, and AI-driven on-chain tooling. Infrastructure and chains. Rollup and Rollup-as-a-Service work on the OP Stack and Superchain approach (Ethereum L2, Optimism L3, Base L3), plus a web-based rollup deployer. I have also done lower-level chain work: a custom consensus chain in Go moving toward EVM compatibility, with node, wallet, RPC endpoints, chain ID setup, MetaMask compatibility, faucet, and block explorer integration. Product, not just code. A contract is only useful when people can interact with it. I integrate contracts with Web3 frontends using ethers.js and web3.js, build the backend and API layer real apps need, and build admin dashboards and deployment automation. I work in Hardhat and Foundry, write tests and deployment scripts, and deploy to testnet and mainnet properly. Who I work well with: founders launching tokens, DeFi and DEX teams, Telegram bot founders, and Web3 startups that need an MVP shipped fast but built right. Also teams with a codebase that is broken, half-finished, or inherited from a developer who disappeared. How I work: I am direct. I would rather tell you something will not work, or will cost more than you hoped, than agree to everything and disappoint you later. I scope clearly, communicate in plain language, and flag risks early. I do not use investment-promise language, I do not guarantee a token will succeed, and I will not claim a contract is unhackable, because no honest engineer says that. What I do not claim: I have not audited a major protocol, and I am not a certified auditor, so I will not pretend to be one. I can do audit-style review, write proof-of-concept exploits, and harden a contract, and for anything mission-critical I will tell you straight when a formal third-party audit is the right move. If you are building something serious and want one developer who can hold the contract, the product, and the deployment in their head at once, send me the details. Tell me what you have, what is broken or missing, and where you want to be, and I will tell you honestly whether I am the right fit and how I would approach it.

As a top-tier AI (Artificial Intelligence), machine learning (ML), and blockchain developer on Upwork, I have a proven track record of delivering cutting-edge solutions for a wide range of clients. With a deep understanding of the latest technologies and frameworks in these rapidly evolving fields, I am well-equipped to handle even the most complex and challenging projects. My AI and machine learning expertise allows me to build intelligent systems that can learn and adapt, enabling businesses to automate processes, improve decision-making, and drive innovation. Meanwhile, my blockchain development skills allow me to create secure, transparent, and immutable decentralized applications (DApps) and smart contracts. Regarding technology stacks, I am proficient in various programming languages and frameworks, including but not limited to Python, TensorFlow, Keras, PyTorch, and Ethereum. I have also worked with multiple blockchain platforms such as Bitcoin, Hyperledger, and Corda, and I am familiar with cryptographic protocols such as SHA-256 and Secp256k1. My combination of technical expertise and real-world experience makes me an invaluable asset for any business looking to leverage the power of AI, machine learning, ChatGPT, and blockchain to drive growth and success. Whether working on a project related to AI, machine learning, ChatGPT, or blockchain, I always strive to deliver the highest quality results for my clients. I am dedicated to staying up-to-date with the latest developments in these fields and to continuously learning and improving my skills. With my expertise and dedication, I am confident that I can help businesses of all sizes harness the power of these technologies to drive innovation and achieve success. If you need a top-tier AI, machine learning, or blockchain developer, I encourage you to consider me for your project. 🤝 Please feel free to ask me any questions or share your problem or idea. I am always here to help and would be glad to hear from you!

𝗜 𝗮𝗺 𝗖𝗵𝗮𝗵𝗮𝘁 a Full-stack and Blockchain Developer with nearly 𝗮 𝗱𝗲𝗰𝗮𝗱𝗲 𝗼𝗳 𝗲𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 in providing blockchain solutions to Startups and enterprises in DApp, Blockchain technology, Web application, Game, and Mobile app development. We're an expert team of developers 𝗶𝗻 𝗜𝗻𝗱𝗶𝗮, 𝗦𝗮𝘂𝗱𝗶 𝗔𝗿𝗮𝗯𝗶𝗮 𝗮𝗻𝗱 𝗨𝗔𝗘, reviewing business models across the globe and helping them to adjust their businesses within the growing blockchain ecosystem. Since diving into blockchain in 2016, we’ve built crypto exchanges (P2P and CEX) to NFT marketplaces and advanced smart contracts. Whether you’re launching a DeFi protocol, tokenizing assets, or building a metaverse app, we can make it happen. Tools & Tech Stack: 🔹𝗟𝗮𝗻𝗴𝘂𝗮𝗴𝗲𝘀: Solidity, Rust, JavaScript, TypeScript, Python, Node.js 🔹𝗕𝗹𝗼𝗰𝗸𝗰𝗵𝗮𝗶𝗻 𝗧𝗼𝗼𝗹𝘀: Web3.js, Ethers.js, Solana Web3, Truffle, Hardhat, IPFS 🔹𝗙𝗿𝗮𝗺𝗲𝘄𝗼𝗿𝗸𝘀: React, Next.js, React Native, Express.js 🔹𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲𝘀: MongoDB, PostgreSQL, MySQL, Redis 🔹𝗜𝗻𝗳𝗿𝗮𝘀𝘁𝗿𝘂𝗰𝘁𝘂𝗿𝗲: AWS, Docker, Kubernetes, CI/CD pipelines 🔹𝗧𝗲𝘀𝘁𝗶𝗻𝗴: ETH (Goerli), Binance (BNB), Polygon (Matic), Tron (Sasta) What we can do? 🔹𝗕𝗹𝗼𝗰𝗸𝗰𝗵𝗮𝗶𝗻 & 𝗪𝗲𝗯𝟯 𝗦𝗼𝗹𝘂𝘁𝗶𝗼𝗻𝘀: Design and deploy dApps, smart contracts (Solidity, Rust), NFTs (ERC-721, ERC-1155, BEP20), DeFi protocols, DAOs, cross-chain integrations, metaverse development (VR/AR, virtual worlds), and blockchain game development (GameFi, play-to-earn). 🔹𝗦𝗼𝗹𝗮𝗻𝗮 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁: High-performance smart contracts, DEXs, and dApps using Rust, SPL tokens, and Solana’s ecosystem for fast, low-cost transactions. 🔹𝗘𝘁𝗵𝗲𝗿𝗲𝘂𝗺 & 𝗠𝗼𝗿𝗲: Expertise in Ethereum, Binance Smart Chain, Polygon, Tron, Layer 2 solutions (Optimism, Arbitrum, zkSync), and enterprise blockchains (Hyperledger, Quorum) for secure deployments. 🔹𝗙𝘂𝗹𝗹-𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁: Build intuitive web and mobile apps using MERN (MongoDB, Express.js, React, Node.js), Next.js, React Native, and AI-blockchain integrations for smart automation. 🔹𝗦𝗽𝗲𝗰𝗶𝗮𝗹𝗶𝘇𝗲𝗱 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀: NFT marketplace development (including Whitelabel solutions), token development, stablecoin development (USDT, USDC, custom), cryptocurrency development, ICO/IDO/IEO launchpads, real estate tokenization, cross-platform wallets (multi-currency, custodial/non-custodial), DEX development (Automated Market Making, liquidity pools), payment gateway integration, and security-focused smart contract audits (using MythX, Slither). 🔹𝗜𝗻𝗱𝘂𝘀𝘁𝗿𝗶𝗲𝘀 𝘄𝗲'𝘃𝗲 𝘄𝗼𝗿𝗸𝗲𝗱 𝘄𝗶𝘁𝗵: FinTech, Healthcare, Supply Chain, Real Estate, Insurance, Retail, and CBDC/enterprise blockchain solutions. 𝗚𝗼𝘁 𝗮 𝗽𝗿𝗼𝗷𝗲𝗰𝘁 𝗶𝗻 𝗺𝗶𝗻𝗱? We’d love to hear about it. ✉️My TAT is short, hit the "𝗜𝗻𝘃𝗶𝘁𝗲" at the top of my profile for a quick chat. 𝗣𝗦: Blockchain consultancy available for free.

I build backend systems that actually work in production — especially in Web3, trading, and financial applications. I’m a developer with strong experience in Node.js and blockchain systems, focused on building real-world solutions such as: * Wallet infrastructure (deposit / withdraw systems) * Trading bots (TradingView + API execution) * Smart contract integrations * Crypto payment systems (USDT, USDC, ETH) * API integrations and automation systems I don’t just write code — I design systems. I’ve worked on: * Web3 wallet platforms with real-time balance tracking * Token and smart contract systems (presale, swap, transfers) * Trading automation systems with strict logic and execution rules * Backend APIs handling financial data and transactions My focus: * Clean and scalable backend architecture * Deterministic systems (especially for trading logic) * Reliable integrations (APIs, blockchain, third-party services) If you need someone who can understand your system and build it properly — I’m the right person. Let’s build something solid.

I am a blockchain focused developer working within TeamQ, delivering Solidity smart contracts, Web3 applications, and full stack MERN dApps. Alongside blockchain engineering, I also build and integrate AI driven backend systems using modern LLM tools and Python frameworks. My work spans smart contract logic, NFT infrastructure, scalable Web3 frontends, and AI powered application modules. - Blockchain | Web3 - ERC20 | ERC721 | ERC1155 smart contracts - NFT minting systems | metadata pipelines | reveal logic - Wallet integration using Ethersjs | Web3js - Hardhat testing | gas usage checks - Deployments on Ethereum | Polygon | BSC - IPFS workflows for NFT assets - Full Stack | Application Layer - React | Node | Express | MongoDB | Typescript - REST API design | backend module development - AWS deployments with S3 | EC2 | Route53 - AI Systems | LLM Integrations - LLM based features using OpenAI GPT - Python Flask AI modules supporting application workflows Data retrieval and validation pipelines for structured inputs Automated user guidance | document handling | analysis modules I have delivered NFT collections up to 10000 items, minting platforms, metadata systems, and scalable production Web3 applications. Within TeamQ, I follow strict contract review, testing standards, and deployment best practices across blockchain and AI based systems. If you need smart contract development, Web3 integration, or AI backed application features, share your scope and chain. I will provide a precise technical plan and milestone structure.

Main Skills: #1 Voice over Internet Protocol - VoIP 📞 #2 Artificial Intelligence (AI) & Machine Learning (ML) 🤖 #3 Internet of Things - IoT 📡 #4 Mobile App, Web App & Software Development Services. 📱💻 ------ VoIP Services: We have rich and proven experience in the VoIP Industry. We can help you with the following services related to this industry. - VoIP-to-VoIP calls, VoIP-to-PSTN calls, WebRTC. - PBX systems: analog, digital, and cloud-hosted. - Using SIP: voice calls, video conferencing, instant messaging, and media distribution. - Platforms: FreeSWITCH, Asterisk, SIP Foundry, Elastix, OpenPBX, FreePBX, 3CX, etc. - Integrations: Twilio, Telnyx, Agora, Jitsi, etc. - AI-powered Voice Assistants: Intelligent virtual assistants for customer service, call routing, and more. ------ AI/ML Development: - Machine Learning: Predictive modeling, classification, regression, clustering. - Deep Learning: Computer Vision, Natural Language Processing (NLP), Neural Networks. - AI-Powered Chatbots: Conversational AI for customer service, sales, and support. - AI-Powered Voice Agents: Intelligent virtual assistants for various applications. - AI in IoT: Predictive maintenance, anomaly detection, and real-time data analysis. ------ IoT: We provide innovative end-to-end solutions in IoT - Firmware Development - IoT based Software, Mobile, and Web Development - Connectivity protocols: Wi-Fi, 2G/3G/4G/5G, Thread, Zigbee®, Z-Wave, LoRaWAN, BLE, Ethernet etc - IoT standards: OpenIoT, HomeKit, Nest, AllJoyn, Brillo, and Weave - AI/ML in IoT: Predictive maintenance, anomaly detection, and real-time data analysis. ------ About Moon Technolabs: - 350+ Developers - 1500+ Projects - Well-layered internal Organization Structure - Well-layered project Development Structure - Since 2009 - Happy Working Environment for our employees

I am a skilled and reliable developer with strong experience in web development, blockchain technologies, and mobile application development. I focus on building secure and high performance solutions using modern tools and frameworks. My goal is to deliver clean, efficient code and results that meet both technical and business needs. Education Bachelor of Computer Science Singapore University of Technology and Design August 2015 - June 2019 Technical skills Frontend: HTML5, CSS3, JavaScript, TypeScript Blockchain: Web3.js, Ethereum, Smart Contracts (Solidity and Solana), NFT, DApps Mobile Apps: Flutter, FlutterFlow, Android, iOS Backend:Node.js, Express, Next.js, PHP

Looking to seamlessly integrate IT with your business goals - and do it fast? 🚀 Whether you need a full product built from scratch, modernization of a legacy application, or staff augmentation to strengthen your in-house team - we’ve done it all for hundreds of clients worldwide. I lead a team of 200+ vetted in-house engineers across every major web and mobile tech stack, ready to match you with the right expert within 24 hours. When you hire from us, you work directly, 1-on-1, with your chosen engineer - no middle layers, no constant handoffs. We back every engagement with clear guarantees and stay available for support. 🧑‍💻 About Me With 10+ years in IT management and a technical background, I’ve grown from developer to Project Manager, to PMO, to Head of Delivery — overseeing over 680 completed projects on Upwork with a 100% Job Success Score and 80+ Clutch reviews (avg. 4.8★). My specialization is in building self-managed teams that deliver end-to-end - from idea to launch - so you can focus entirely on your business while we handle delivery. 🛠 Areas of Expertise Full-Stack Development: React, Angular, Vue, Node.js, PHP, .NET, Python, Java, Ruby, Scala Frontend Development: React, Next.js, Angular, Vue.js Backend Development: Node.js, Express, Java, .NET, PHP, Python Mobile Development: Swift, Kotlin, React Native, Flutter CMS: WordPress, Shopify, Magento, Drupal, Webflow Specialized Services: DevOps, QA Engineering, UI/UX Design, AI/ML, Blockchain Engagement Models: End-to-end delivery, Legacy app modernization, Staff augmentation Industries: Fintech, eCommerce, Media & Entertainment, Healthcare, Automotive, GIS, Education, and more. 🏆 Key Achievements 680+ projects delivered on Upwork with 100% JSS Scaled teams from 2 to 22 members and built 15+ self-managed teams Guided/participated in 300+ additional projects outside Upwork Top-10 US real estate rentals project & Scrum Master for CIBC (Canada’s largest bank) If you’re looking for a reliable partner who can quickly connect you with top talent and ensure smooth, direct collaboration, let’s talk. Let’s connect and discuss your goals - I can match you with the right specialist and have them start within 24 hours.

Hi Employers! I'm Usama Saleem - a university educated web, blockchain developer and graphic designer, working in the business for more than 4 years. Experienced essentially in Website development and UI/UX plan. How about we reach out and make some cool stuff together!