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$20/hr
91% Job Success
$20K+ earned
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🏅𝐓𝐎𝐏 𝐑𝐀𝐓𝐄𝐃 𝐃𝐄𝐕𝐄𝐋𝐎𝐏𝐄𝐑🏅 I am a skilled web developer with 14+ years of experience in Laravel, CodeIginator, and Yii2 along with 5+ years of experience in React.js, Next.js & Nest.js. Electron.js I'm proficient in developing custom websites using the following technologies : 🌟 Experienced in delivering custom web solutions 🌟 Strict adherence to quality & security standards 🌟 Prompt communication 🌟 Thorough understanding of API integrations & DOM Manipulation 🌟 Prompt communication and regular updates 🌟 Ability to manage AWS, Jenkins, CI/CD, security etc. I have often collaborated with other developers, designers, and product managers to understand project requirements and have created custom solutions that meet the needs of clients and the overall project. The following are technologies in which I have a strong proficiency: ========== ⫸ AI ⫸ PHP ⫸ Laravel ⫸ CakePHP ⫸ CodeIgniter ⫸ Symfony ⫸ React.js ⫸ Node.js ⫸ NestJs ⫸ Vue.js ⫸ Angular ⫸ NextJs ⫸ JavaScript ⫸ Typescript ⫸ Electron JS ⫸ AWS ⫸ Jenkins Services I offer for full-stack development:: ========== ✅ Custom web application development ✅ PWA & SaaS application development ✅ SPA (Single page application) development ✅ Interactive UI development for Web and Mobile Apps ✅ Database design and management ✅ Third-party API integration ✅ Optimizing application performance and scalability ✅ QA testing, Load testing, and Bug fixing ✅ Ongoing support and maintenance services ✅ Services I offer:: ✔ Dynamic DOM Manipulation ✔ Push Notification implementation ✔ Tabs & Sidebar manipulation ✔ Event tracking ✔ Cookie storage ✔ Localization implementation ✔ External script embed ✔ Payment integration ✳️ For Electron.js : ⫸ Electron.js application development from scratch or enhancement of existing applications ⫸ Customization, integration, and extension of Electron.js applications ⫸ API integration, database management, and implementation of backend functionalities ⫸ Testing, bug fixing, and performance optimization ⫸ Ongoing support, maintenance, and updates for long-term application reliability I have gained experience working on projects spanning various categories, including : 🏘️ : Real Estate 🍿 : Restaurants 🎓 : Education 🚗 : Cab service 🌴 : Travel 🖥️: Organization or Company based 🏥 : HealthCare 💬 : Social Networking I work on a feedback-oriented development process where my clients are always in the loop with the development process. I look forward to discussing your project details.
$39.99/hr
$10K+ earned
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Hi, I'm Eren — a senior full-stack engineer with 4+ years of experience building production-ready backend, Web3, and full-stack systems. I specialize in NestJS, Node.js, TypeScript, Telegram MiniApps, TON, Ethereum/EVM, fintech systems, Web3 gaming platforms, NFT marketplaces, smart contracts, and automation-heavy products. Over the past four years, I have worked on 15+ production projects, including cashback platforms, Telegram MiniApps, Web3 gaming ecosystems, NFT systems, smart-contract integrations, and trading automation tools. WHAT I DO Backend Architecture I build scalable and maintainable backend systems with clean module boundaries, secure authentication, caching, queues, rate limiting, API documentation, and production-ready deployment setups. Core backend stack: NestJS, Node.js, TypeScript, Express, MongoDB, PostgreSQL, Redis, BullMQ, WebSocket, GraphQL, TypeORM, Mongoose, Prisma, Docker, AWS, CI/CD. Recent backend work includes: - Multi-service Telegram gaming ecosystem - Fintech cashback platform with multi-role user architecture - Wallet login, JWT, refresh token, and secure session flows - Contract-event listener pipelines - OCR-based receipt processing - Payment and transaction integrations Web3 & Blockchain I build Web3 systems that connect smart contracts, wallets, backend services, and frontend applications into usable products. Areas I work with: - Solidity smart contracts for Ethereum/EVM chains - TON smart contracts with Tact and FunC - NFT marketplaces and minting flows - Airdrop and claim systems using Merkle proof verification - Token staking and reward systems - Contract-event indexing - Multi-chain wallet integrations Web3 tools: Ethers.js v6, Viem, Wagmi, TON SDK, TonConnect, RainbowKit, Web3Modal, WalletConnect, Hardhat, Foundry, Tact Sandbox. Telegram MiniApps & Bots I have built multiple production Telegram MiniApps and bot-based systems. I understand the real production details, including secure initData validation, Telegram WebApp lifecycle, wallet connection inside Telegram, referral systems, task and reward systems, leaderboards, bot-to-miniapp communication, Grammy-based bot architecture, and Telegram-native UX. Full-Stack Delivery I can take a product from idea to production without needing multiple handoffs. Frontend stack: React, Next.js, Vite, TailwindCSS, Radix UI, Zustand, TanStack Query, Redux Toolkit. I build clean, responsive interfaces connected to type-safe backend APIs, with attention to performance, maintainability, and user experience. RECENT PROJECT EXPERIENCE Memesis Web3 Gaming Ecosystem Architected and developed backend and frontend systems for a Web3 gaming ecosystem with Telegram MiniApp integration, game services, reward systems, wallet flows, and reusable frontend components. Key work: - Designed scalable service architecture - Implemented Redis caching - Built game and reward backend modules - Integrated Telegram MiniApp flows - Worked on production deployment and stability ePOINT Cashback Platform Built a NestJS backend for a cashback and affiliate-style platform involving customers, dealers, and sales representatives. Key work: - Designed multi-role user architecture - Built authentication and authorization flows - Integrated payment and transaction logic - Implemented QR-code based in-store transaction flow - Added receipt OCR processing - Designed backend logic for commissions and hierarchy tracking HOW I WORK I write code that other engineers can maintain. That means: - Clear module boundaries - Clean project structure - Practical documentation - Swagger/OpenAPI docs - Docker setups that work reliably - Tests that catch real regressions - Clear communication during development My working style is direct and transparent. I prefer to clarify scope early, give regular async updates, share progress at milestones, and flag risks before they become expensive problems. TECH STACK Backend: NestJS, Node.js, TypeScript, Express, Microservices, WebSocket, GraphQL, BullMQ, Grammy Frontend: React, Next.js, Vite, TailwindCSS, Radix UI, Zustand, TanStack Query, Redux Toolkit Databases: MongoDB, PostgreSQL, Redis, TypeORM, Mongoose, Prisma Web3: Solidity, Tact, FunC, Ethers.js v6, Viem, Wagmi, TON SDK, TonConnect, RainbowKit, Web3Modal, WalletConnect DevOps: Docker, AWS, GCS, CI/CD, Nginx, production deployment Testing: Jest, Foundry, Hardhat, Tact Sandbox, MongoDB Memory Server Integrations: Stripe, Telegram Bot API, SendGrid, Firebase, Twitter/X API, YouTube API, Discord, AWS S3, Tesseract.js OCR LET'S BUILD Whether you have a complete technical specification or only a rough idea, I can help you turn it into a working product. Send me a message describing what you want to build. I’ll give you honest feedback on the scope, technical direction, estimated complexity, and whether I’m the right person for the project. — Eren
Maaz M.
$35/hr
100% Job Success
$100K+ earned
Available now
Offers consultations
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🏆 Top 3% Upwork Talent | 80+ Projects Delivered | Trusted by 50+ Global Clients 🚀 5+ Years Experience in Full Stack Web Development, AI Integration, FinTech, EdTech, Healthcare, & Blockchain Solutions Hi, I’m Muhammad Maaz, a Top Rated Plus Full Stack Developer who builds scalable, high performance web and mobile applications using the latest JavaScript frameworks. I help startups and enterprises turn complex ideas into secure, user centric, and revenue driven digital platforms. 🔹 What Makes Me Different ⚡ Free 3-Month Post-Launch Support — long-term success matters. 📈 Proven Track Record: 80+ projects, 95% client satisfaction, 100% commitment. 🎯 Future Ready Tech Stack: React, Next.js, Node.js, TypeScript, GraphQL, MongoDB, AI & Machine Learning, Web3 / Blockchain. 🔹 Frontend Expertise 🎨 React.js, Next.js, and Redux → fast, SEO-friendly, responsive user interfaces. 📱 React Native Development → cross-platform mobile apps for iOS & Android. 💡 UI/UX Optimization → focus on conversion, retention, and accessibility. 🔹 Backend Expertise ⚙️ Node.js, Express.js, NestJS → reliable APIs and microservices. 💾 MongoDB, PostgreSQL, Firebase → secure and scalable databases. ⚡ GraphQL & REST APIs → efficient data transfer and real-time performance. ☁️ Cloud Deployment (GCP, AWS, Vercel) → optimized for speed, security & cost. 🔹 AI & Web3 Capabilities 🤖 AI Integration & Machine Learning → chatbots, recommendation engines, predictive analytics, n8n automations. 🔗 Blockchain / Web3 Development → Solidity smart contracts, NFTs, DeFi platforms, wallet integrations, DApp architecture. 🔹 Industries I Empower 🏦 FinTech → scalable payment and trading platforms. 🎓 EdTech → next-gen LMS and learning automation systems. 🏥 Healthcare → HIPAA-compliant patient portals and EMR apps. 💼 Enterprise SaaS → CRM, ERP, and automation tools. 🌐 Blockchain / Web3 Startups → decentralized products and token ecosystems. 💡 Whether you’re launching an MVP or scaling a global platform, I bring clean architecture, optimized performance, and transparent collaboration to every project.
Maaz M. has worked .
$60/hr
83% Job Success
$5K+ earned
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👋𝓗𝓮𝓵𝓵𝓸, 𝓱𝓸𝓹𝓮 𝔂𝓸𝓾 𝓪𝓻𝓮 𝓭𝓸𝓲𝓷𝓰 𝔀𝓮𝓵𝓵! I'm an experienced developer with extensive experience in Web Scraping, Wallet & Token Tracking, Telegram Bot & Miniapp development and Trading. I specialize in delivering high-quality, scalable solutions tailored to your needs. Let’s build something great together! 🚀 🌟 Key Skills: 𝓣𝓻𝓪𝓭𝓲𝓷𝓰 𝓼𝓸𝓵𝓾𝓽𝓲𝓸𝓷𝓼: I am very familiar with Solana wallet & token tracking bot development. Skilled in developing trading algorithms and strategies across various platforms. 💹 𝓦𝓮𝓫 𝓢𝓬𝓻𝓪𝓹𝓲𝓷𝓰: Comprehensive scraping solutions for websites, E-commerce platforms, social media, and Telegram channels. If you have a specific target link, I can scrape all the data within 1 - 2 days. 📊 𝓣𝓮𝓵𝓮𝓰𝓻𝓪𝓶 𝓜𝓲𝓷𝓲𝓪𝓹𝓹𝓼: Expert in developing engaging miniapps that enhance user interaction on Telegram. 📱 𝓐𝓘 𝓭𝓮𝓿𝓮𝓵𝓸𝓹𝓶𝓮𝓷𝓽: Proficient in creating AI-driven applications using OpenAI technologies, including chatbots and machine learning. 🤖 🔍 Full Summary: With a strong foundation in various programming languages and frameworks, I excel in full-stack development with a focus on web scraping, trading, and TG miniAPP & bot development. My expertise allows me to seamlessly integrate different components of a project, ensuring the final product is functional, optimized for performance, and maintainable. What I Offer: ✔ Comprehensive Web Scraping: From general websites to complex E-commerce platforms and social sites. ✔ Leadership & Collaboration: I thrive in diverse teams as a leader or key contributor, driving projects forward to align with business objectives. ✔ Domain Expertise: My multi-faceted experience across industries helps me understand client needs and deliver strategic solutions. Technologies: ✔ Cryptocurrency APIs such as Bitquery, Cielo, SHYFT gRPC +RPC, Birdeye, Pumpportal and GeckoTerminal. ✔ Selenium, Beautiful Soup, Scrapy, ScraperAPI, Puppeteer, Telethon ✔ MT4. MT5, NinjaTrader, Tradingview ✔ Telegram API, Bot development ✔ OpenAI, LangChain, Gemini, Machine Learning, OCR Let’s Build Something Great Together! 💬 My goal is to build lasting relationships with clients by providing top-tier service and leveraging my skills in web scraping, trading, Telegram bot development, and AI. If you have questions or need further information, I’m here to discuss! I look forward to collaborating with you and contributing to your project's success.
Isaac M. has worked .
$60/hr
100% Job Success
$300K+ earned
Available now
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You hired developers but can't tell if they're building the right thing, or building it right. Or you're a non-technical founder who needs a senior technical voice before you spend the next $50K on the wrong stack. I'm a Fractional CTO and Forward Deployed Engineer for founders building MVPs, SaaS platforms, and AI products. I don't do weekly advisory calls. I embed with your team (daily standups, Slack, code reviews) and own the technology side of your business. I make architecture decisions, manage your developers or agency, and keep delivery on track. Hands-on when it matters, strategic when it doesn't. Track Record⭐ | 100% Job Success 🚀 12+ years shipping production software 💯 100+ projects, $300K+ earned, 11,000+ hours logged How I Work Short sprints, clear goals, daily Loom walkthroughs so you always know what shipped, what's blocked, and what's next. If your team is underperforming, I catch it in week two, not month three. If an agency is padding hours, I see it immediately. Engagement Models:🔸 Embedded Fractional CTO: 10 to 20 hrs/week, monthly retainer, ongoing leadership 🔸 MVP Build + Technical Foundation: 3 to 6 weeks, I architect and ship your v1 on a stack built to scale 🔸 Tech Audit & Rescue: Fixed-scope diagnostic if you've been burned by an agency or your build is stalling 🔸 Fundraising Support: Investor calls, due diligence prep, technical credibility on pitch materials Where I Add the Most Value:✔ Non-technical founders who need a technical co-pilot ✔ Founders managing offshore teams with limited transparency ✔ Replacing a departed technical lead or recovering from a bad build ✔ Pre-seed to Series A going from MVP to product-market fit ✔ Founders preparing for fundraising or technical due diligence Tech Stack Frontend: React, Next.js, TypeScript, Tailwind Mobile: React Native, Expo Backend: Node.js, NestJS, Python (FastAPI), Laravel Databases: PostgreSQL, MongoDB, Redis, Supabase Cloud: AWS, GCP, Vercel, Docker AI: OpenAI, Claude, LangChain, RAG, Pinecone Payments & Auth: Stripe, Twilio, OAuth I'm stack-agnostic when it matters. I choose what fits your stage and budget, not what's trendy. Industries: SaaS · Fintech · Healthcare · CPG · Manufacturing · Supply Chain · Logistics · ERP/CRM · Human Capital Management · Real Estate · Banking/NBFC Specialised Use Cases:✔ AI Chatbot Development (RAG, customer support, lead gen) ✔ AI Automation & Workflow Agents (internal tools, ops, sales) ✔ AI Demand Forecasting (CPG, retail, supply chain) ✔ Warehouse Management Systems (WMS, inventory, fulfilment) ✔ Cargo & Logistics Platforms (fleet, shipment, dispatch) ✔ Facility & Property Management Software ✔ Custom ERP & CRM Builds ✔ Healthcare Platforms (compliance-aware, HIPAA-conscious) FAQs Q: How many hours per week will you actually work? Most engagements average 10 to 20 hrs/week, but I don't cap by hours. I embed daily and stay as engaged as the deliverable requires. Think "available every day," not "logged in for X hours." Q: Do you write code or just review it? Both. For MVPs I write significant code myself. For scaled teams I review, architect, and unblock. I won't charge a CTO rate to do junior work. If a task doesn't need my level, I'll tell you. Q: I already have developers, what would you actually do? Make sure they're building the right thing, the right way. Review their code, challenge scope creep, catch problems before they get expensive, and translate between your business goals and their technical decisions. Q: Can you join investor calls or due diligence? Yes. Pitch calls, technical DD, written updates investors can understand. You can list me on pitch materials as your technical advisor for the duration of our engagement. Q: Zero-risk start? First 2 days, if you're not happy, full refund. No questions. I'd rather lose a project than waste your time. Send me a message with what you're building and what's going wrong. I'll reply within a few hours with honest thoughts on fit, scope, and what it'll take to get you unstuck. If I'm not the right person, I'll tell you that too. Click "Invite to Job" or "Hire Now." Let's build.
APPWRK IT Solutions LLC
Associated with
APPWRK IT Solutions LLC
$4M+
earned
Faizan A.
$27/hr
99% Job Success
$800K+ earned
Available now
Offers consultations
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AI Consulting, CTO Expertise, Full Stack Development. Workflow Automations and Digital Transformations 🏆 Helped LulaCommerce Raise $10M in funding starting from scratch and now 1000+ stores on board 🏆 AUAV powered by software developed by us now used by clients like Rio Tinto, Energy Australia reducing the need of manpower by over 80% 🏆 Worked with leading marketplaces for therapists like Mental Health Match and UK Therapy Guide with thousands of therapists and customers on board 🏆 Setup and Manage dedicated team for LOCL.AI that power local seo for leading chains and travel destinations ⭐⭐⭐⭐⭐ "Faizan and his team were excellent! They were an extension of our team and were able to cover full-stack development across our web and mobile presence. ⭐⭐⭐⭐⭐ "Faizan, has a great team of professional developers. Part from his skill foremost I loved his attitude to work and manage product needs" ⭐⭐⭐⭐⭐ "Faizan is great and very reliable, I knew he was a great fit for our project as soon as we jumped on the phone. If you're looking for someone to turn your idea into a reality then Faizan and his team are your answer. I don't know very much about software, and most people I interviewed made everything way overcomplicated and asked me questions I wouldn't know how to answer in a million years. Faizan gave me no BS, and spoke to me in terms I could understand." As a CTO, I provide guidance on product roadmap planning, architecture design, and technology stack selection, enabling businesses to achieve sustainable growth. Web Development: Transforming ideas into reality through cutting-edge web technologies and design. AI Consulting: Strategic integration of AI technologies to enhance operational efficiency and innovation. CTO Expertise: Leadership in product roadmap planning, architecture design, and tech stack selection. Full Stack Development: Comprehensive development using technologies like Python, React, NextJs, Node, and more. Let’s collaborate to take your project to the next level. Contact me today to discuss how I can bring your vision to life.
ESketchers
Associated with
ESketchers
JEGEDE A.
$60/hr
100% Job Success
$7K+ earned
Available now
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I build production-grade blockchain systems that move fast and execute precisely flash loan arbitrage contracts, MEV bots, on-chain DeFi protocols, and automated trading infrastructure across Ethereum and Solana. With deep expertise in Solidity and the Solana ecosystem, I work directly with DeFi protocols including Aave, Uniswap V3, Curve, Balancer, and Jupiter integrating flash loans, swap routing, liquidity management, and MEV extraction into auditable, gas-optimised smart contracts. What I Build ▸ Flash Loan Arbitrage Systems Multi-hop arbitrage contracts using Aave V3 / Balancer flash loans, routed through Uniswap V3, Curve, and Sushiswap. Atomic execution with on-chain profit validation before every transaction. ▸ MEV & Trading Bots (Solana + EVM) Jito-based Solana MEV bots, sandwich detection, backrunning strategies, and Ethereum mempool monitoring bots built with Ethers.js and web3.py. ▸ DeFi Protocol Development Custom AMMs, yield aggregators, staking contracts, token launchpads, vesting schedules and DAO governance fully tested with Hardhat and Foundry. ▸ Smart Contract Auditing & Optimization Gas profiling, reentrancy protection, access control review, and vulnerability assessments for existing Solidity codebases. Tech Stack Solidity · Rust · TypeScript · Python Ethers.js · Web3.js · Anchor Framework Hardhat · Foundry · Truffle Aave V3 · Uniswap V3 · Curve · Balancer · Jupiter · Raydium Chainlink · The Graph · IPFS Node.js · PostgreSQL · Redis Why Clients Choose Me ✔ I write clean, auditable code not copy-paste scripts ✔ I communicate clearly and hit deadlines ✔ Every contract ships with tests and documentation ✔ I understand both the code and the financial logic behind DeFi Whether you need a flash loan bot deployed at anytime or a full DeFi protocol Built from the ground up, let's talk about what you're building.
John B.
$90/hr
100% Job Success
Offers consultations
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If your app is broken, behind schedule, or stuck with bugs you can’t diagnose, I can help. I’m a senior full-stack developer with 30+ years of experience fixing, stabilizing, and finishing production systems—especially React, Node.js, APIs, and databases. I’m often brought in when: • A project is partially built but stuck • A previous developer disappeared • Bugs are blocking launch • APIs or integrations aren’t working My focus is fast diagnosis, clear communication, and shipping fixes—not rewrites. I’m a hands-on developer with 35 years of experience delivering production software across web, backend, and infrastructure systems. In recent work, I’ve been building and fixing applications using React, Node.js, MongoDB, and modern cloud environments. I also work with Web3 systems when needed, including Ethereum and Solana smart contracts, token integrations, and wallet-based workflows. With experience across many languages and platforms, I adapt quickly to the problem at hand and focus on getting things working reliably. Common fixes I handle: • API integrations that fail, timeout, or return incorrect data • Third-party API auth, webhooks, and data sync issues • React rendering, state, and performance issues • Node.js / Express backend errors and crashes • MongoDB schema, query, and data issues • Finishing half-built MVPs I’m available for short-term fixes or ongoing support.
John B. has worked .
Ashish C.
$25/hr
99% Job Success
$1M+ earned
Available now
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I help healthcare, enterprise, and SaaS teams turn complex requirements into secure, scalable, production-ready software. Senior SaaS Software Architect & FullStack Developer for Case Management, Files, Compliance Platform With 22+ years of experience, I have built and optimized HealthTech platforms, enterprise SaaS applications, AI-enabled workflows, API integrations, analytics dashboards, and data pipelines for clients across the US, Canada, Australia, Europe, UAE, and other markets. My core strength is combining business analysis, product thinking, and technical execution to deliver practical solutions that are aligned with real operational needs. I work across AI, agentic automation, LLMs, RAG, NLP, ML, system integration, and full-stack development. I have extensive experience in: Healthcare software: EHR/EMR, telehealth, patient engagement, patient monitoring, RCM, HEDIS, risk adjustment, care gap analytics, lab systems, practice management, and insurance workflows Enterprise SaaS: multi-tenant platforms, dashboards, workflow automation, analytics, and secure integrations AI enablement: OpenAI, Azure AI Foundry, LLM applications, RAG systems, XAI, intelligent automation, and decision support Integration work: HL7, FHIR, CCDA, Mirth Connect, EMR/EHR integrations, and enterprise APIs Data and reporting: Power BI, Tableau, SSRS, SQL, PostgreSQL, MongoDB, MySQL, and operational analytics My preferred stack includes .NET Core 8 9 & 10, ASP.NET C#, Python, FastAPI, ReactJS, Angular, JavaScript, PHP, Laravel, and SQL-based architectures, with cloud experience across Azure and AWS. I also represent a team with deep healthcare domain experience, supported by senior system analysts and a doctor (Critical Care Specialist). We understand the operational, compliance, and clinical realities behind healthcare software, including HIPAA-focused implementation and technical safeguards. What I deliver AI-powered SaaS and enterprise applications Healthcare platforms and telehealth solutions API integrations and interoperability layers Analytics dashboards and reporting systems Workflow automation and intelligent assistants MVPs, modernization projects, and product rebuilds Why clients work with me Strong architecture and product judgment Clear communication and ownership Deep healthcare and enterprise domain experience Balanced execution across strategy, design, and delivery Focus on scalable, maintainable, real-world solutions If you need a reliable AI, healthcare, or SaaS engineer who can translate business requirements into working software, I am ready to help.
smartData Inc Agency
Associated with
smartData Inc Agency
$70M+
earned
$30/hr
$0 earned
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I am a Blockchain Developer specializing in Solidity smart contracts, Rust-based systems, and full-stack Web3 applications. I build secure, scalable, and production-ready decentralized applications (DApps), DeFi protocols, and crypto trading automation systems. I work across the full Web3 stack including: Smart Contracts (Solidity, Rust, EVM, Solana) DApps (React, Next.js, Web3 integrations) Backend systems (Node.js, APIs, blockchain indexing) Crypto Trading Bots & automation systems DeFi protocols, staking, NFTs, and token systems My focus is on building secure, gas-optimized, and production-grade blockchain systems with clean architecture and real-world usability. Whether you need a: Smart contract deployed and audited Full Web3 DApp built from scratch Trading bot for crypto markets Or full-stack blockchain integration I can help you turn your idea into a working product.