Hire the Best Ethereum Developers

Your blockchain project will generate $500K+ revenue through secure, scalable Web3 solutions that outperform 90% of competitors. I transform complex blockchain ideas into profitable, battle-tested applications with verified smart contracts and measurable business impact. 𝗥𝗲𝗰𝗲𝗻𝘁 𝗖𝗹𝗶𝗲𝗻𝘁 𝗥𝗲𝘀𝘂𝗹𝘁𝘀: -Deployed DeFi protocol managing $2.3M TVL with zero security breaches over 18 months -Built an NFT marketplace processing $800K+ in transactions within the first 6 months -Optimized smart contracts, reducing gas fees by 42% for 50K+ users -Created a cross-chain bridge handling 15K+ transactions monthly with 99.97% uptime 𝗖𝗼𝗿𝗲 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲: 𝗦𝗺𝗮𝗿𝘁 𝗖𝗼𝗻𝘁𝗿𝗮𝗰𝘁𝘀 & 𝗦𝗲𝗰𝘂𝗿𝗶𝘁𝘆: Ethereum, Polygon, BNB Chain, Solana using Solidity and Rust. Expert in gas optimization, security auditing, and vulnerability prevention with 200+ deployed contracts. 𝗗𝗲𝗙𝗶 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁: Staking protocols, lending platforms, liquidity pools, and automated market makers (AMMs). Specialized in tokenomics design and yield farming mechanisms. 𝗡𝗙𝗧 & 𝗧𝗼𝗸𝗲𝗻 𝗦𝗼𝗹𝘂𝘁𝗶𝗼𝗻𝘀: ERC-20, ERC-721, ERC-1155 implementations, NFT marketplaces, and custom tokenomics. Experience with 40+ successful token launches. 𝗱𝗔𝗽𝗽 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲: React/Next.js frontends with Web3.js/Ethers.js integration, MetaMask and WalletConnect implementations, and responsive Web3 user experiences. We deliver full-cycle, end-to-end blockchain development solutions, spanning DeFi protocols, NFT marketplaces, RWA tokenization, Layer-2 integrations, and advanced Web3 dApp development. Our expertise includes custom smart contract development, enterprise-grade blockchain infrastructure, and seamless integration with modern Web3 ecosystems. We architect secure, scalable, and high-performance decentralized systems designed for real-world adoption and long-term impact. Our approach emphasizes smart contract audits, zero-trust security architecture, gas optimization, MEV-resistant design, cross-chain interoperability, and on-chain governance models. By implementing rigorous security standards, protocol-level safeguards, and performance optimization strategies, we build blockchain products that meet evolving industry standards and ensure sustainable scalability. If you are ready to turn your Web3 vision into a production-ready solution, we can support your tokenomics design, DAO framework development, blockchain infrastructure planning, and scalable Web3 roadmap execution, delivering resilient, future-proof decentralized ecosystems aligned with next-generation blockchain innovation.

10 years of progressive work experience in software development and product management in the fintech industry. Interested in AI and Web3 projects. I design and build AI-powered applications. Hold Bachelor's degree in Computer Science. Live in Calgary, Canada. • AI: Google AI Studio, Gemini API, Imagen for generative image pipelines, Anthropic Claude API, OpenAI API for LLM integration, prompt engineering, AI-powered product development • AI-Assisted Dev Tools: Claude Code, GitHub Copilot, Codex • Web3: Solidity, Foundry, Web3.js/Ether.js, ERC-20, ERC-721, EVM, dApps, DeFi, NFT, Blockchain APIs • Languages: HTML/CSS, JavaScript, TypeScript, JSON, PHP, MySQL, PostgreSQL, Python • Developer Tools: Next.js, Git, Figma, Jira, Trello, Scrum, Cloudflare, Azure, Visual Studio Code

Senior Web3 Blockchain & AI Engineer I build at the intersection of decentralized systems and artificial intelligence where smart contracts meet machine learning, and on-chain infrastructure powers intelligent, autonomous applications. With deep expertise across blockchain development and AI engineering, I deliver production-ready solutions that are secure, scalable, and designed for the real world. What I Build Blockchain & Web3 Solidity smart contracts, DeFi protocols, NFT marketplaces, DAOs, token launches, staking systems, DEX integrations (Uniswap / PancakeSwap), cross-chain bridges, Layer-2 solutions, crypto payment systems, and full-stack dApps across Ethereum, BNB Chain, Polygon, and Arbitrum. AI Engineering LLM-powered applications, RAG pipelines, AI agents and autonomous workflows, fine-tuned models, natural language interfaces for Web3, AI-integrated smart contract monitoring, on-chain data intelligence, and predictive analytics for DeFi. AI × Web3 Convergence AI-driven trading and arbitrage bots, intelligent contract auditing assistants, on-chain anomaly detection, LLM-powered DAO governance tools, AI agents interacting with blockchain protocols, and real-world asset (RWA) platforms with embedded intelligence. Core Expertise:- Blockchain Solidity · ERC-20 / ERC-721 / ERC-1155 · Hardhat · Foundry · Wagmi · Viem · Web3.js · Ethers.js · Gas Optimization · Smart Contract Security · Token Vesting · Tokenomics · Wallet Integration · On-Chain & Off-Chain Architecture AI & Machine Learning LLMs (GPT-4, Claude, Gemini, open-source) · LangChain · LlamaIndex · RAG Systems · Vector Databases (Pinecone, Weaviate, Chroma) · Fine-Tuning · AI Agents · OpenAI API · Hugging Face · Prompt Engineering · Embeddings · Semantic Search Full Stack & Infrastructure TypeScript · Node.js · React · Next.js · Python · Rust · MongoDB · PostgreSQL · Docker · AWS · Firebase · CI/CD Pipelines · Blockchain Deployment Pipelines What I've Shipped ✔ Decentralized Applications (dApps) with AI-powered user interfaces ✔ DeFi Platforms with intelligent yield optimization and risk scoring ✔ NFT Ecosystems with AI-generated content and rarity analysis ✔ DAO Governance Systems with LLM-assisted proposal drafting and summarization ✔ AI Trading & Arbitrage Bots with real-time on-chain signal processing ✔ Token Presale & Launchpad Platforms ✔ Crypto Wallet Applications with smart transaction suggestions ✔ Real World Asset (RWA) Platforms with AI document verification ✔ Web3 SaaS Platforms with embedded AI assistants ✔ Blockchain Dashboards with NLP querying and predictive analytics ✔ Liquidity & Farming Systems with automated rebalancing logic ✔ Smart Contract Auditing Tools augmented by AI analysis Why Clients Choose Me Security-first — every contract and AI pipeline is built with attack surfaces and edge cases in mind. Clean architecture — maintainable code, clear separation of concerns, well-documented systems. AI × Web3 natively — not bolted on, but designed together from the ground up. Fast communication — transparent, async-friendly, timezone-aware. Long-term partner— I support what I ship, from testnet to mainnet to production at scale. Business-oriented — I understand your product goals, not just the technical spec. Startup to enterprise — I've worked across the full spectrum and know what each stage needs. I build blockchain products and AI systems that are reliable, efficient, and ready for real-world adoption and increasingly, I build them as one unified thing Let's connect and talk about your next project

🏆 𝗡𝗢𝗧𝗔𝗕𝗟𝗘 𝗔𝗖𝗛𝗜𝗘𝗩𝗘𝗠𝗘𝗡𝗧𝗦 🤖 Deployed production multi-agent systems on OpenClaw, 8+ autonomous agents running live business operations 24/7 ⚡ Shipped PULSE : autonomous X/Twitter growth agent executing without human intervention. 🎬 Engineered AI Reality Show : AI Shark Tank, Real founders pitching live on Google Meet to AI-avatar VCs. Built with ElevenLabs (voice) and Hedra (video). 🔗 Shipped AI Trading Agent : Trading agent executing real on-chain transactions across Solana and EVM via natural language interaction. 🏅 Hackathon and Grant Winner : Starknet Thailand 2024, A51 Finance 🚀 Production systems delivered for Dafi Protocol, Lokr, Zygnus, Kerberus and TrustSwap. 🧠 7 years across AI, Data Science, Web3 and Blockchain, veteran engineer and builder by nature. I have been writing code for 7 years. I followed the technology wherever the engineering was hardest and built there before the market caught up. It started in blockchain: smart contracts, DeFi protocols, liquidity management systems. Made countless open-source contributions, plus tried building and growing my own products. Then moved on to AI before it had this much hype. I love to research and learn new things which pull me in a different direction. I was tracking LLM development as a technical discipline, every model release, every architecture paper, while layering AI into what we were already building: DeFAI protocols with natural language execution layers, crypto bots driven by LLM reasoning, automation pipelines on-chain. The real inflection point was AI Shark Tank. We architected a full multi-agent simulation founders pitching live on Google Meet to autonomous investor avatars, each running independently, performing real-time due diligence through coordinated inter-agent collaboration. Voice, avatar generation, and LLM reasoning fully orchestrated. Halfway through that build I realized: I was not adding a feature. I was engineering a new category of software. ⚙️ 𝗧𝗛𝗘 𝗔𝗚𝗘𝗡𝗧 𝗦𝗧𝗔𝗖𝗞 & 𝗔𝗨𝗧𝗢𝗡𝗢𝗠𝗢𝗨𝗦 𝗪𝗢𝗥𝗞𝗙𝗟𝗢𝗪𝗦 : 🤖 𝗢𝗽𝗲𝗻𝗖𝗹𝗮𝘄 𝗔𝗴𝗲𝗻𝘁 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿𝗶𝗻𝗴: Orchestrator and POD architecture, inter-agent communication, shared memory, event routing, VPS deployment 🧠 Multi-Agent Orchestration: Coordinated agent fleets, task routing, autonomous and approval-gated operational modes ⚙️ 𝗕𝘂𝘀𝗶𝗻𝗲𝘀𝘀 𝗣𝗿𝗼𝗰𝗲𝘀𝘀 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻: Workflow pipelines replacing manual ops, outreach, lead generation, content, CRM syncing 🔗 𝗟𝗟𝗠 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻: Claude/OpenAI APIs, local LLM deployments, tool use, function calling, persistent memory, RAGs 🎯 𝗣𝗿𝗼𝗺𝗽𝘁 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿𝗶𝗻𝗴: Multi-agent frameworks, persona conditioning, voice-matched messaging at systems level 📡 𝗔𝗣𝗜 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻: Node.js and TypeScript across REST, Discord, LinkedIn, X API v2, WordPress, and CRM platforms 🎙️ 𝗩𝗼𝗶𝗰𝗲 𝗮𝗻𝗱 𝗔𝘃𝗮𝘁𝗮𝗿 𝗔𝗜: ElevenLabs, Hedra, Whisper, live call-style agentic experiences. 🚀 𝗔𝗚𝗘𝗡𝗧𝗦 𝗟𝗜𝗩𝗘 𝗜𝗡 𝗣𝗥𝗢𝗗𝗨𝗖𝗧𝗜𝗢𝗡: 🔹 FleetMind : CBDO Orchestrator + 4 POD agents (Content, Social, Web, SEO/GEO) + US/EU regional agents. 8+ agents, 6+ integrations, 24/7 ops. 🔹 LANCE : 5-touch (build relation first, then sell strategy) LinkedIn outreach agent. Voice-matched, Discord approval-gated, persistent memory, platform-safe. 🔹 PULSE: Autonomous X/Twitter daily actions: threads, trend monitoring, reply engagement, ICP targeting, weekly analytics. 🔹 AI Reality Show: Autonomous investor avatars on Google Meet. Real-time due diligence and investment decisions. Manual override supported. 🔹 AI Twin App: Persona agents mirroring real Web3 figures via public data ingestion and prompt engineering. 🔹 NLP Trading Agent :NLP on-chain trading agent. Swaps, bridges, cross-chain transfers via natural language. x402 payments, multi-chain adapters. 💡 𝗪𝗛𝗬 𝗛𝗜𝗥𝗘 𝗔 𝗛𝗨𝗠𝗔𝗡 𝗪𝗛𝗘𝗡 𝗬𝗢𝗨 𝗡𝗘𝗘𝗗 𝗔𝗡 𝗔𝗚𝗘𝗡𝗧 𝗘𝗡𝗚𝗜𝗡𝗘𝗘𝗥 ❓ 1. Agents don't deploy themselves: The right engineer is the difference between broken automation and a 24/7 production system. 2. Most agent failures are architecture failures: I map ownership, communication, memory, and failure points before anything runs. 3. No fragile agents: Real money, production standards, zero tolerance, every agent I ship is held to that bar. 4. One engineer, full stack: Architecture to deployment, no handoffs, no gaps. 5. I Ship: Honest scope, real timelines, no half-built handoffs. 🤝 𝗟𝗘𝗧'𝗦 𝗣𝗨𝗧 𝗬𝗢𝗨𝗥 𝗙𝗜𝗥𝗦𝗧 𝗔𝗚𝗘𝗡𝗧 𝗧𝗢 𝗪𝗢𝗥𝗞 If you are building an Agentic AI product, an OpenClaw agent system, or an AI automation pipeline and need an engineer who has actually shipped these systems in production, you are in the right place. I become a complete engineering partner, not just a freelancer. From architecture and agent design to deployment, monitoring, and iteration, I am in it until it works.

Need a full-stack product built fast without sacrificing scalability? With 15 years as a Full-Stack Developer and AI Engineer, I’ve delivered 16k+ hours and $1M+ earnings across web and mobile products. For startups and SaaS teams, I build React, Next.js, Node.js, and Flutter solutions that launch cleanly and scale confidently. 🎯 HOW I CAN HELP YOU FULL-STACK WEB APPLICATION DEVELOPMENT Launch scalable web products that convert users faster and support long-term growth. I build React, Next.js, Node.js, and TypeScript applications with architecture choices that have supported $1M+ in Upwork earnings and 100% Job Success. AI AGENT AND OPENAI INTEGRATION Add intelligent features that automate work, reduce manual effort, and create new product value. I integrate OpenAI APIs and AI workflows into existing platforms to accelerate delivery and turn ideas into usable AI-powered products. MOBILE APP DEVELOPMENT Ship iOS and Android apps that give users a smooth experience across devices and help you reach more customers. I develop with Flutter, React Native, Swift, and Kotlin, with proven experience delivering apps published to both Apple and Google app stores. SAAS PLATFORM DEVELOPMENT Turn complex ideas into secure, scalable SaaS products that are ready to monetize. I have built multi-tenant platforms with authentication, billing, APIs, and dashboards for startups and enterprise teams in as little as MVP timelines. API AND BACKEND ENGINEERING Increase system stability, speed up integrations, and support growth with robust backend foundations. I design Node.js, NestJS, Express, PostgreSQL, and cloud-based systems that handle real-world product demands across web, mobile, and AI features. 🏆 RESULTS "Thanks to Cinnamon's efforts, the app's server response times were excellent, and the end client was thrilled with the results. The team was responsive and pragmatic in responding to needs, communicating via virtual meetings, emails, and messages. Their talented engineering team was impressive." – Gregory W., Founder, Mojave Interactive LLC "Thanks to Cinnamon's work, the client has seen a 25% higher completion rate and 40% less completion time. The pricing calculators have reduced the error rates by 50%. The team delivers timely items, responds quickly to messages, and addresses requests effectively. Their support is unique." – Premnath M., Head of Software Development Digital Bank, BAWAG AG "The Android app has thousands of downloads and impressive online ratings, which reflects Cinnamon Agency's technical expertise. The team is willing to work long hours to meet deadlines. They excel at project management and have a robust reporting system in place." – Garin Toren., Founder, Ping 🎖 JavaScript Algorithms and Data Structures Certification 🎖 React Developer Certification 🎖 AI Engineering and LLM Integration Certification See full case studies in my portfolio below. 🤝 𝗚𝗘𝗧 𝗜𝗡 𝗧𝗢𝗨𝗖𝗛 Have an app idea or product to launch? Message me on Upwork today for a free consultation and a clear plan to move forward. I typically respond within 4 hours and can offer quick turnaround for urgent projects. 𝗛𝗼𝘄 𝗜 𝗪𝗼𝗿𝗸 I build in React, Next.js, and TypeScript to ship fast, maintainable web apps, then use Node.js, PostgreSQL, and AWS to keep the backend reliable and scalable. For AI features, I integrate OpenAI APIs and Cursor into workflows that automate tasks and add real product value. I also use Flutter when a project needs a polished cross-platform mobile app. I build full-stack web applications with React and Next.js, integrate Node.js APIs, and deliver mobile app development with Flutter and AI development that scales.

Is your blockchain product ready for real users, or is it a prototype that breaks under live transactions? Most Web3 projects fail at the boundaries between smart contracts, wallets, trading operations, and backend systems. 🏆 20+ years architecting production systems at principal engineer level 📊 $200K+ earned on Upwork across 32 architecture projects 🎯 100% Job Success Score, Top Rated Plus on Upwork ⚡ 11 years architecting Fintech / Trading / Accounting solutions ⚡ 8 years architecting blockchain products across Bitcoin, EVM, Solana ecosystems 💼 CEO at Osambit, a 20-person engineering team ✅ Enterprise Blockchain Architect certified, former Sr Principal Engineer at Nordstrom ⭐⭐⭐⭐⭐ "We've had the opportunity to collaborate with the Osambit team, and it's been a great experience. They're highly professional, responsive, and truly understand the final goal. Their technical expertise and ability to deliver on time have been key to the success." (Alwyn V., IXO World) As a Blockchain Architect with 20+ years of production engineering experience and two years focused on Web3, I design blockchain and fintech products that operate reliably beyond a demo. I work across Solana and EVM networks—including Ethereum, Polygon, Base, BSC, and Arbitrum—as well as enterprise platforms such as Hyperledger Fabric and Besu. My work connects secure smart-contract, wallet, payment, and remittance flows with the backend systems, operational controls, and user experiences a real product needs. Every engagement starts with architecture: chain selection, custody and transaction boundaries, compliance-aware workflows, failure modes, scalability, and security. That architecture-first approach helps blockchain and neobanking products withstand live usage, not just testnet scenarios. 🔶 Centralized exchange: architecture for trading operations, wallet flows, and reliable backend integration 🔶 Custodial wallets: secure custody, transaction handling, and multi-wallet platform architecture 🔶 Trading automation system: real-time blockchain-integrated trading workflows with operational safeguards 🔶 Liquidity automation system: DeFi and liquidity-management automation across Solana and EVM ecosystems 🔶 Fintech, neobanking & remittance apps: payment, account, wallet, and cross-border transfer architecture 🔶 Bitcoin mining facility control panel: operational dashboard and control-system architecture for mining infrastructure 🔶 Blockchain-integrated game: NFT features, token and wallet integrations, and production-ready game backend design 🔶 Enterprise blockchain solutions: permissioned-network architecture and public-chain integrations using Hyperledger Fabric or Besu 🔶 Nordstrom (Sr Principal Engineer, 5 years): architected 9+ enterprise systems | led 10 offshore engineering teams | supply chain, payment, logistics domains WHAT I DO ✅ Blockchain Architecture: chain selection, system design, security boundaries, and production rollout planning ✅ Solana Development: Rust programs, SPL standards, RPC integrations, and high-throughput DeFi systems ✅ EVM & Smart Contracts: Solidity development and integrations for Ethereum, Polygon, Base, BSC, and Arbitrum ✅ Wallet & Custody Systems: custodial wallet architecture, secure transaction handling, and multi-wallet integrations ✅ Fintech, Neobanking & Remittance: payment flows, account and wallet systems, cross-border transfers, and operational controls ✅ DeFi, Trading & Liquidity Automation: trading workflows, liquidity systems, DEX integrations, and operational controls ✅ NFT & Tokenized Products: NFT minting, metadata, marketplace and royalty logic, and blockchain-integrated game features ✅ Enterprise Blockchain: Hyperledger Fabric and Besu solutions, permissioned-network architecture, and API or oracle integrations ✅ Full-Stack Web3 Platforms: React interfaces, Node.js or Python backends, web3 integrations, and real-time transaction services ✅ Production Infrastructure: AWS, Docker, Kubernetes, CI/CD, observability, automated testing, and scalable data systems WHO I WORK WITH 🎯 B2B and B2C companies building blockchain products, fintech and neobanking apps, exchanges, wallets, DeFi platforms, or games 🎯 Founders and CTOs who need Web3, payment, or remittance systems running in production with real users and real assets 🎯 Teams with multi-week engagements (4+ weeks minimum), not 5-minute tasks 🎯 Companies that understand blockchain architecture is a system design and security problem, not just a smart-contract problem 🎯 Clients who value senior engineering judgment over the cheapest hourly rate MY PROCESS 1️⃣ Architecture Review: 24-hour turnaround on an initial system map, risk review, and scope estimate for your blockchain or fintech product. Close collaboration with business and deep domain immersion. 2️⃣ Design: chain selection, smart-contract, wallet, payment, and remittance boundaries, backend integration, and security plan 3️⃣ Build: production blockchain or fintech