Engineer specialized in automation, control systems, and embedded tech, with a passion for innovation.

Want to work with an experienced Blockchain developer who can bring your smart contract and decentralized application (dApp) vision to life? Are you looking for a Solidity or Rust developer to build gas-optimized smart contracts? Whether you need ERC20, SPL tokens, ERC721, ERC1155, NFTs with custom features, secure high-value contracts, comprehensive contract tests, or scripts to interact with major DEX protocols — I’ve got you covered. 🖐 Some of my previous clients’ feedback: ✔️ “Excellent technical skills and consistently good communication... Completed the project in a timely fashion, exceeding our original deadline.” ✔️ “His work was phenomenal... made sure I understood every step along the way...” ✔️ “Took this project on as if it was his own... Great professional skills, always there to answer questions and suggest the best solutions.” ✔️ “Every facet of his work was impressive. WOW!” ✔️ “Goes above and beyond. Md's professionalism and expertise in blockchain are unmatched.” ✔️ “Communication is excellent, delivery is fast, and his knowledge of smart contracts is impressive.” With expertise across EVM-compatible chains like Ethereum and BSC, as well as Solana, I specialize in delivering high-performance, secure, and gas-efficient smart contracts and dApps tailored to each project’s requirements. I help clients build contracts that are resilient against vulnerabilities and optimized for long-term maintainability. I might be the right fit if you’re thinking: ✅ “I need the best developer who treats my project like his own.” ✅ “I want someone who can guide me through smart contract interactions step by step.” ✅ “Gas fees are too high — I need contracts that are efficient and cost-effective.” ✅ “I need a professional who can make my contracts secure and production-ready.” ✅ “I don’t have time to struggle with Ethereum, Solana, or multi-chain integrations.” ✅ “I need an expert who can handle both Solidity and Rust for cross-chain applications.” Working with me, you will: 💎 Work with a developer skilled in Python, JavaScript, TypeScript, Rust, Solidity, Brownie, Hardhat, Next.js, Foundry, and Anchor 💎 Reduce vulnerabilities and optimize gas usage during deployment and on-chain interactions 💎 Strengthen your dApp’s security with testing, auditing support, and continuous improvements 💎 Avoid hiring multiple specialists — I can handle smart contracts, scripts, backend, and frontend as a full-stack blockchain developer 💎 Receive custom scripts for swapping, lending, borrowing, liquidity management, staking, and DEX interactions 💎 Build seamless multi-chain and cross-chain solutions across Ethereum, BSC, and Solana 🖐 My Skills & Expertise in Blockchain ☑️ Solidity development for EVM-compatible smart contracts ☑️ Rust development for Solana programs ☑️ Experience with Chainlink, OpenZeppelin, and multiple ERC standards ☑️ Token development (ERC20 / BEP20 / SPL) with features like mintable, burnable, reflections, transaction fees, whitelist/blacklist, IDO/ICO support ☑️ NFT development (ERC721, ERC1155, ERC404) with whitelist, royalties, presale, public sale, Dutch auctions, IPFS hosting, and dynamic NFT logic ☑️ Full-stack blockchain development with Solidity, Rust, Python (Brownie), JavaScript/TypeScript (Hardhat), Next.js, Foundry, and Anchor ☑️ Scripts and programs for deploying and interacting with protocols such as Aave, Uniswap, Raydium, and PancakeSwap Why Work With Me 💎 Extensive experience: I’ve designed and built many smart contracts from scratch and developed backend deployment and interaction scripts for real blockchain products. 💎 Problem solver: I’m comfortable taking projects from idea to architecture to production while solving complex blockchain engineering challenges. 💎 Gas optimization focus: I use proven strategies to reduce gas costs, improve execution efficiency, and thoroughly test contracts to prevent exploits. My Background in Numbers ✔️ 5+ years of blockchain experience ✔️ Built smart contracts, DApps, and scripts across ERC20, BEP20, SPL, ERC721, and ERC1155 standards ✔️ Worked on crowdfunding platforms, airdrop systems, DEXs, insurance products, ICO/IDO platforms, lottery systems, and NFT marketplaces ✔️ Created and tested a wide variety of production-ready smart contracts ✔️ Wrote extensive test suites using Foundry, Hardhat, Brownie, and Anchor Sound Like a Fit? Next Steps Click the green “Invite to Job” button in the top right-hand corner or send me a message, and let’s schedule a call to discuss your project. You can also book a consultation directly. Keywords Blockchain Developer, Smart Contract Developer, Solidity Developer, Rust Developer, Solana Developer, Ethereum Developer, EVM Developer, Web3 Developer, DApp Developer, Full Stack Blockchain Developer, Gas Optimization, Smart Contract Security, Smart Contract Testing, Foundry Developer, Hardhat Developer, Brownie Developer, Anchor Developer, Next.js Developer, TypeScript Developer, JavaScript Develop

Are you seeking a blockchain developer who can turn your smart contract and dApp vision into reality? I'm a seasoned Solidity and Rust expert specializing in crafting gas-optimized smart contracts. Whether you need to develop custom ERC20/SPL tokens, create advanced NFTs (ERC721, ERC1155, or ERC404) with unique features, secure your high-value contracts against vulnerabilities, write rigorous test suites, or build scripts to interact with leading DEX protocols, I have the expertise to deliver robust, efficient solutions. Let’s collaborate to build secure, scalable, and innovative blockchain solutions that drive your project's success. With expertise in EVM-compatible chains (like Ethereum, BSC) and Solana, I specialize in delivering high-performance, gas-optimized smart contracts and dApps tailored to your specific requirements. I help my clients build secure and highly resilient smart contracts, minimizing vulnerabilities and ensuring your code is fortified against exploits. I might be the perfect fit if you're thinking of any of these: ✅ Is as passionate about your success as their own. ✅ Guides you through every step of smart contract development and dApp integration. ✅ Delivers lightning-fast, gas-optimized solutions that minimize costs. ✅ Ensures 100% security for your smart contracts with expert vulnerability mitigation. ✅ Offers streamlined support for Ethereum, Solana, and multi-chain applications. ✅ Can rescue projects after previous dApp failures with proven expertise. ✅ Provides comprehensive solutions for both EVM-compatible and cross-chain blockchain needs. Here's what my clients have to say: ✔️ "Excellent technical skills and consistently good communication—completed the project ahead of schedule." ✔️ "Phenomenal work; he ensured I understood every step of the process." ✔️ "He took this project on as if it were his own—always ready with the best solutions." ✔️ "Every facet of his work was impressive. WOW!" ✔️ "His professionalism and blockchain expertise are unmatched." ✔️ "Communication is excellent, delivery is fast, and his smart contract knowledge is impressive." Let's build secure, scalable blockchain solutions together! Collaborating with me means you’ll tap into the expertise of a full-stack blockchain developer proficient in Python, JavaScript, TypeScript, Rust, Solidity, Brownie, Hardhat, NextJS, Foundry, and Anchor. I build secure smart contracts that reduce vulnerabilities and lower gas fees during deployment and interactions, while continuously enhancing your dApp's security. Save time and resources—no need to hire separate developers for back-end, front-end, or blockchain-specific tasks. I also deliver custom scripts for liquidity management, lending, borrowing, and seamless integration with top dApp protocols. Whether you need to bridge Ethereum, BSC, or Solana, I design multi-chain solutions that work flawlessly across networks. Blockchain Expertise & Skills: • Solidity development for EVM-compatible contracts • Rust programming for Solana blockchain • Experience with Chainlink, various ERC standards, and OpenZeppelin • Custom token development (ERC20/BEP20/SPL) with advanced features • Advanced NFT creation (ERC721, ERC1155, ERC404) with royalties, presale, and dynamic features • End-to-end blockchain solutions using Solidity, Python (Brownie), JavaScript (Hardhat), TypeScript, Rust (Anchor), NextJS, and Foundry • Development of scripts to deploy and interact with protocols like Aave, Uniswap, Raydium, and PancakeSwap Why Choose Me: • Proven Expertise: I’ve developed hundreds of smart contracts from scratch, creating robust back-end systems for seamless deployment. • Problem Solver: Skilled in designing projects from the ground up and executing rapid, iterative prototyping to resolve complex challenges. • Gas Optimization: I implement professional strategies to minimize gas fees and rigorously test smart contracts to prevent exploits. With over 3 years in blockchain technology, I've successfully developed numerous dApps, tokens, and protocols, including crowdfunding platforms, DEXs, NFT marketplaces, and more. Ready to elevate your blockchain project? Click the "Invite to Job" button or send me a message to schedule a consultation call. Let's build something extraordinary together!

I build things that actually ship. In the last year, I co-founded a Web3 payroll platform now live on Stellar mainnet, won a $100K Stellar Community Fund grant, secured real paying clients, and at JP Morgan I cut enterprise bug resolution time from one week to one day with a RAG pipeline I built from scratch. I am a final-year CS student at IIIT Guwahati (GPA: 9.1/10) and I have been building in production the entire time. What I do best: I operate across the full stack, from Rust smart contracts and blockchain protocol engineering to TypeScript backends, Next.js frontends, and cloud infrastructure. My edge is speed and adaptability: I have shipped on BNB, Arbitrum, Base, Stellar Soroban, and Mantle, picking up each new ecosystem under live hackathon or mainnet pressure. I do not learn first and build second. I learn by building. Where I have delivered real results: At PayZoll (my startup), I built the entire product single-handedly for the initial hackathon win, then led the team from zero to mainnet in four months post-grant. The platform processed $11K/month at peak, integrated zk-KYC and gasless meta-transactions, and is now migrating to Sui with $100K/month projected volume. I built the core Rust/Soroban infrastructure, payment queues, recoverability systems, and a real-time transaction health dashboard. At JP Morgan (Asset and Wealth Management), I built a RAG-based ticket triage system on AWS using Confluence and Jira as the knowledge base. Resolution time dropped from roughly a week to about one day. I also built Snowflake pipelines that eliminated a multi-team reporting bottleneck, cutting manual effort by over 60%. Tech I reach for regularly: TypeScript, Rust, Node.js, Next.js, React Native, PostgreSQL, Redis, Docker, Kubernetes, Stellar SDK, Python, AWS, Snowflake, and LLMs/RAG tooling. What working with me looks like: I take full ownership. I do not need hand-holding on architecture decisions, and I will push back if something does not make sense technically or for the business. I ship fast, communicate clearly, and treat client problems like my own. I am fully remote, India-based, and available to start immediately. If you need someone who will figure it out and deliver, let us talk.

I’m a blockchain developer experienced in building blockchain applications for small and medium-sized businesses. Whether you’re trying to win work, list your services, or create a new online store, I can help. Knows HTML and CSS3, PHP, jQuery, Wordpress, and SEO, Rust and Solidity Full project management from start to finish Regular communication is important to me, so let’s keep in touch.

I am an experienced developer specializing in the creation of desktop scripts, smart contracts and chatbots. My background includes developing smart contracts in Solidity, FunC and Rust. Furthermore, I have participated in hackathons, contributing to the development of bots for various purposes, including blood donors and home care services.Besides my work on Upwork, I've also completed numerous successful projects on platforms like Kwork. I'm always excited to use my skills to help out anyone who needs it. I take pride in delivering top-notch results and look forward to teaming up with folks to get things done :)

Hi 👋 I’m a Senior Full-Stack Engineer with 8+ years of experience, now specializing in building AI-powered systems, autonomous agents, and workflow automation that replace manual work and scale operations. I help startups and enterprises design and ship AI agents, LLM-powered apps, and automation pipelines (n8n, APIs, event-driven systems) that actually deliver business impact; not just demos. 🤖 What I Do Best: ✅ AI Agents & Automation Systems * Build autonomous AI agents using LLMs (GPT, Claude, open models) * Multi-step workflows (decision-making, tool usage, memory, orchestration) * n8n / custom orchestration pipelines (API → AI → action loops) ✅ LLM & AI Product Development * RAG systems, embeddings, vector DBs * Chatbots, copilots, internal AI tools * Prompt engineering + evaluation pipelines * Fine-tuning & domain-specific AI workflows ✅ Workflow Automation (Replace Manual Ops) * n8n / Zapier-style systems at scale * Event-driven architectures (SQS, EventBridge, queues) * Data ingestion pipelines, ETL, AI-driven processing ✅ Full-Stack AI Applications * FastAPI / Django backend + React/Next frontend * Secure APIs, real-time systems, SaaS platforms * AI integrated into real products (not isolated scripts) ⭐ Proven Impact * Built AI agents that reduced manual operations by 60–80% * Designed event-driven AI pipelines handling large-scale data ingestion * Delivered production-grade LLM systems (RAG + tools + automation) * Helped startups launch MVPs fast and scale to real users * 170+ successful projects across SaaS, AI, and enterprise systems 💡 Why Clients Hire Me: ✅ I think like a product engineer, not just a coder → I design systems that solve business problems (cost, speed, scale) ✅ Strong in AI + Backend + Infra (rare combo) → I don’t just plug APIs — I build reliable, scalable AI systems ✅ Automation-first mindset → If something is repetitive, I’ll replace it with AI ✅ Clear communication & ownership → You won’t need to micromanage 🧠 Core Tech (AI-Focused): 🚀 Tech-Stack: 👉 Back-End Development: Python, Django, FastAPI, Flask, Node.js, Express.js, NestJS, PHP, Laravel, Ruby on Rails, Java, Spring, Golang, Rust, C++, Zig, Firebase, Kotlin, Swift, Flutter 👉 Front-End Development: React.js, Vue.js, JavaScript, TypeScript, Tailwind CSS, HTML, Angular, jQuery, Next.js, Nuxt.js, Stimulus, Bootstrap 👉AI / LLM / Agents: OpenAI (GPT), Claude, Gemini, LLaMA, LangChain, RAG, Vector DBs, Prompt Engineering, AI Agents, Tool Use, Memory Systems 👉Automation & Orchestration: n8n, event-driven systems, queues (SQS/Kafka), workflow engines 👉 Database Management: PostgreSQL, MySQL, MongoDB, Redis, Firebase, BigchainDB 👉 Blockchain: Ethereum, Solana, Solidity, Anchor, Smart Oracles, Chainlink, DeFi, DEX, Crypto, Hyperledger Fabric, Web3.js, Ethers.js 👉 Messaging/Queuing: Apache Kafka, RabbitMQ, Amazon SQS, Redis Streams, NATS, Adaptive Aeron 👉 API Integration: RESTful APIs, REST, GraphQL, gRPC, OpenAPI, WebSockets, FastAPI, HubSpot API, Microservices 👉 Machine Learning (AI/ML): AI Agent, AI Bot, Python, TensorFlow, PyTorch, LangChain, OpenAI GPT, FastAPI, Apache Spark, Hugging Face, AWS SageMaker, OpenCV, PIL, Vertex AI, RAG, LLM finetuning, NLP, spaCy, NLTK, ML, Deep Learning, YOLO, Faster R-CNN 👉 AWS Tools: Lambda, CloudFront, EC2, S3, Kinesis, SageMaker, Kubernetes, Docker, Nginx 👉 Version Control: Git, GitHub, Bitbucket ⭐ Startup + Impact Experience: *Worked with early-stage startups to build MVPs from scratch and scale them *Built AI automation systems reducing manual work by 60–80% *Delivered production-grade SaaS + AI platforms used by real customers *Strong experience in 0→1 builds, rapid iteration, and product thinking 🚀 What You Can Hire Me For: * Build AI agents (customer support, ops automation, internal tools) * Automate workflows using n8n + LLMs * Create AI SaaS / MVP (0 → 1) * Integrate AI into existing products * Design scalable backend systems for AI applications 📩 Let’s Build Something Valuable If you’re looking to automate workflows, build AI agents, or ship AI products fast, I can help you go from idea → production.

Hello, I am a senior blockchain developer with proficiency in NFT marketplace, Smart Contract development, ICO& IDO, Smart Contract Audits, DeFi/DApp development. My blockchain experience is extensive, having worked with blockchain since 2017. I am well-versed in the following services: ✓ Smart Contract Development - ERC20, ERC721, ERC721A, ERC1155, BEP20, BEP721 Standards, Solana, EOSIO, WAX networks. - Contract Test and Audit in development environment by using Truffle, Hardhat - Anti-Bot, Whitelist functions integration for Token, NFT contracts - Wrap Token Contract development from BTC, NDAU, Doge, etc. ✓ Smart Contract Audits - Code checking line by line - High/Middle/Low level severity Audit test on the testnet, devnet - Provide audit with functional example ✓ Defi/ DApp Development - Forking Dex tools like Uniswap, Sushiswap, Pancakeswap, Rubic with special requirement - Crypto Escrow System development (Frontend: React, Backend: Laravel, Python/Flask, Escrow Contract development) - ICO & IDO, Token airdrop & presale service platform with custom supply, Liquidity, whitelist - Wallet connection using web3.js or ether.js ✓ NFT minting & staking, marketplace Development - Minting, Staking Contract on ERC721, ERC1155 standards on Ethereum, Polygon, Avalanche, BSC, Harmony, Solana network - P2E (Play to Earn) contract development ✓ Cross-Chain-Bridge Development. - Child Token, Bridge Contract development - Relay service integration like Moralis, Chainlink, Chainstack - Well-made Cross-Bridge DApp development using react.js, web3.js, MongoDB ✓ CEX Development - Spot & Margin Trading option, Multi-Chain Support - Fiat Withdraw, Deposit function by using PayPal, Stripe, CoinPayment, Perfect Money Api integration - Well-Structured DB Design Best Regards. We will meet on the Crypto-Verse

Summary Topnotch IT professional with HUGE experience in different IT areas: - Software development: More than two decades of experience, many large-scale projects, in Golang, C#/.NET, C/C++, Python, MATLAB, JavaScript, etc. - Specialized in performance-must industries where microseconds count, especially trading. I was working for two of the biggest trading companies in the world: "QuantRes" from Bahamas and "Jump Trading". - Blockchain and crypto: Huge experience in crypto-trading software and blockchain intergration. - DevOps: Planning and deploying efficient development workflows and CI/CD pipelines. - Containerization: HUGE experience with Docker and Kubernetes, both AWS managed EKS and on-premise vanilla Kubernetes. - Public cloud: AWS certificated, planning, implementing and managing cost-effective cloud deployments, tailored for specific client's needs. - Private cloud: Ten years of experience in planning, deploying and maintaining virtual infrastructures based on VMware and Hyper-V. - Hybrid cloud: Maintaining complex private+public cloud infrastructures. - System administration: Combined Linux/Windows environments, networking, monitoring, centralized configuration management, etc. Unique combination of experience and knowledge in many different IT areas makes me an ULTIMATE IT PROBLEM SOLVER. I can solve a problem no matter if it's caused by software bug, networking, DB load, firewalls, or simply bad karma. Certificates - Microsoft: MCP, MCAD - AWS Certified Developer - Associate (DVA-C01) - AWS Certified Solutions Architect - Associate (SAA-C01) - Certified Solidity Developer (CSD) - Certified Smart Contract Developer (CSCD) - Certified NFT Developer - Certified Polygon Developer DevOps Skills Besides DevOps skills mentioned above in AWS section, I also need to mention: - GitHub, Bitbucket; - Other Atlassian products (JIRA, Confluence, FishEye, Bitbucket, etc.); - Code quality tools like SonarQube; - Automated build tools like AppVeyor, Jenkins; - And much more. Software Development Skills - Strong software architecture skills. Planned many large-scale projects from scratch (selecting the appropriate architecture, databases, technology, patterns and practices, integrating third-party packages, etc.). - Programming languages: Golang (5 years of experience), C#/.NET (20 years of experience), MCAD in .NET from 2004; C/C++ on different platforms (Windows, Linux, OS X), with different compilers (Visual C++, GCC, Intel, Clang), Qt framework, C++/WinRT, for UWP; Other languages: Python, MATLAB, JavaScript, etc. I can quickly adopt any other language if needed. - Databases: MS SQL Server and PostgreSQL in RDBMS world; Cassandra, ScyllaDB, Elasticsearch and AWS DynamoDB in NoSQL world, KairosDB, OpenTSDB, InfluxDB in time-series DB systems. I can quickly adopt any other database. I'm able to suggest, plan, deploy and utilize the most appropriate DB system based on the client's needs. - Experience in architecting and developing large-scale distributed systems that are running on multiple servers, exchanging hundreds of thousands of messages per second, with real-time processing, with huge ingestion rates (dozens of thousands of data points per second). - Developing for micro-service architecture, Docker and Kubernetes. Also for modern "serverless" environments in the cloud. - Performance-first development for trading and system applications. Solution Architecture Skills Huge experience in software architecture, combined with huge infrastructure engineering experience (public, private, hybrid clouds), makes e a perfect Solution Architect. SysOps Skills - On-Premise virtualization based on VMware and Hyper-V; - System administration in combined (Win/Lin) environments; - Networking (private networks, DMZ, firewalls, routers, VPN connections with remote offices, VLANs, subnets, etc.). - Advanced monitoring with Zabbix and similar tools; - Centralized configuration management with Puppet or Ansible. Blockchain-specific development skills - Solidity smart contracts developer, following security and other best practices. - Using well-known third-party contracts and libraries like OpenZeppelin. - Using off-chain oracles like Chainlink. - Deploying ERC-20 tokens, initial coin offerings (ICO), ERC-721 and ERC-1155 non-fungible tokens (NFT). - Experience with Ethereum and Polygon blockchains, able to adapt to any other. - Unit testing and deployment automation by using tools like Truffle suite and Ganache. I can also adapt to Python tools like `brownie`. - Integrating smart contracts to development / production workflows by using Web3.js. Looking forward to hearing from you!

As an experienced developer with intensive production experience, I've successfully delivered over fifty projects at the intersection of Web3 technology and practical business applications. My work spans blockchain development, AI integration, and full-stack engineering, with specialized expertise in building decentralized applications that drive real value. In the Web3 space, I've developed numerous production-ready dApps including DeFi platforms and NFT marketplaces using Solidity, web3.js, and Hardhat. One of my significant achievements includes engineering cross-chain bridge solutions between Ethereum and Polygon that have processed over $5 million in transactions. My smart contract optimization work has consistently helped clients reduce gas fees by 40% or more through careful auditing and technical refinements. My full-stack capabilities are demonstrated through scalable systems built with Next.js, React, Node.js and Python that reliably serve more than 50,000 monthly active users. I take particular pride in optimizing API performance to achieve consistent sub-200ms response times, and have implemented robust AWS Cloud9 environments with efficient CI/CD pipelines that streamline deployment processes. The AI and automation solutions I've developed have delivered measurable business impact, including multiple successful integrations of OpenAI API and custom LLM implementations. My workflow automation projects using n8n and Make.com have saved clients more than 100 hours of manual work each month, while AI chatbot implementations have reduced customer support costs by 35% for several organizations. What sets me apart is my combination of technical depth and business-focused results. Based in the Philippines, I offer Silicon Valley-grade development at competitive rates, with a 95% client retention rate that speaks to the quality and reliability of my work. I maintain a strong commitment to staying at the forefront of Web3 and AI developments, ensuring my clients benefit from the latest technological advancements. I'm currently available for new projects and would welcome the opportunity to discuss how I can contribute to your Web3, AI, or full-stack development initiatives. Please feel free to reach out to explore how we might work together to bring your vision to life. Client testimonials and portfolio samples are available upon request.