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Senior Blockchain Developer | Web3 & Smart Contract Expert I'm a blockchain developer and Web3 architect with English fluency and 9+ years building production-grade smart contracts, DeFi protocols, NFT infrastructure, and crypto wallets. I've shipped audit-ready blockchain solutions for 150+ clients worldwide. 🔹 What I build as a blockchain developer: - DeFi Protocols — lending, staking, yield farming, governance, payment gateways, cross-chain (LayerZero, Axelar, IBC) - NFT Infrastructure — ERC721/ERC1155 smart contracts, NFT marketplaces, minting engines, NFT staking, financial NFTs - Crypto Wallets — ERC-4337 account abstraction, multichain wallets (EVM & non-EVM), MPC, social recovery, gasless UX - Rollups & Modular Chains — OP Stack, zkStack, Celestia DA, EigenLayer, custom sequencers 🔹 Blockchain tech stack: Solidity, Vyper, Rust, Hardhat, Foundry, zkSync, Arbitrum, Optimism, Cosmos SDK, Substrate, Polygon CDK, Cairo, Noir, OpenZeppelin, Seaport, IPFS, Wagmi, RainbowKit, Safe 🔹 Featured blockchain projects: - Play-to-Earn NFT game with custodial crypto wallet - Liquity fork with multi-collateral DeFi architecture - Launchpad on NEAR for tokenized IDOs - Prediction market on Solana - Staking aggregator platform 🔹 How I work: Audit-ready, gas-optimized smart contracts. Transparent communication. Fast prototyping. Outcome-focused. Available for contract, ongoing blockchain development, or Web3 advisory roles. Let's build your next blockchain project together.

★ TOP RATED freelancer by Upwork ★ I'm a Senior WordPress Developer & Web Design Experts with 10+ years of experience with 99% success. I will convert any kind of design such as XD, Zeplin, Figma, PSD, AI to HTML and WordPress theme. Customize any WordPress theme (Flatsome, X-theme, Astra, Avada, Thrive...) fully responsive design which is useful for supporting your site in any device. I’m extremely transparent and honest about what can be achieved for your business. So what are you waiting for? Just let me know about your project & get that! ********** OUR SERVICES ********** ✓ Customize Shopify theme / Woocommerce theme... ✓ Customize WordPress theme (Flatsome, Avada, Thrive, ...) ✓ Convert Design(XD, PSD, AI...) to HTML, WordPress theme... ✓ SEO WordPress, SEO On-page, Security for WordPress theme.. ✓ Improve website Speed with GTmetrix and PageSpeed Insights.. ✓ Redesign website , Install WordPress theme, Plugin like as a demo.. ✓ ...... Always Included: ✓ Free 60 days support ✓ 100% Satisfaction guarantee ✓ Unlimited revision until you are satisfied Why you shoud choose me ? -------------------- ***** All History Job With 5 Star Reviews ***** "Amazing Work, working very fast..", "Good working ethics, great quality work", .. I'm sure to provide you the best quality of service, please contact me for the work to get started. I hope to have long term cooperation... Best Regards, Ngoc T.

I am a seasoned full-stack developer and AI specialist with over a decade of experience architecting and building robust web applications, enterprise-grade backend systems, and intelligent AI agents. My expertise spans across multiple programming paradigms and languages -from the structured reliability of PHP (Laravel) and Java to the high-performance concurrency of Go and the dynamic frontend capabilities of TypeScript with Next.js. I don't just write code; I build solutions that drive business growth. Over the years, I've helped startups launch MVPs, scaled platforms for enterprise clients, and integrated cutting-edge AI/ML models to automate workflows and deliver data-driven insights. What I Do Best: - Web Application Development: End-to-end development using Laravel, Ruby on Rails (ROR), and Next.js. I build responsive, SEO-friendly, and high-performance applications tailored to your business needs. - Backend Engineering: Scalable API design and microservices architecture using PHP, Java, and Go. I focus on clean code, security, and long-term maintainability. - AI Agent Development: I design and deploy intelligent AI agents that automate tasks, interact with users, and integrate seamlessly with your existing systems. - AI/ML Integration: From predictive analytics to natural language processing (NLP), I implement machine learning models that turn your data into actionable intelligence. I bridge the gap between complex data science and practical application. Tech Stack at a Glance: - Languages: PHP, TypeScript, Go, Java, JavaScript, Python (for ML) - Frameworks & CMS: Laravel, Ruby on Rails, Next.js, React, Node.js - AI/ML: OpenAI API, LangChain, TensorFlow, Scikit-learn, Pinecone, Vector Databases, RAG (Retrieval-Augmented Generation) - Databases: MySQL, PostgreSQL, MongoDB, Redis - DevOps & Tools: Docker, Kubernetes, AWS (EC2, S3, Lambda), CI/CD Pipelines, Git Why Work With Me? - Reliability & Communication: I pride myself on being a clear communicator. You'll never be left guessing about project status. - Business-First Mindset: I focus on the ROI of your project. Whether it's increasing user engagement, automating a tedious process, or scaling for growth, my code is always aligned with your business goals. - End-to-End Ownership: From initial concept and database design to deployment and maintenance, I handle the entire software development lifecycle. -------------------------------------------------------------------------------------------------------- Let's Build Something Great Whether you need a full-stack developer to bring your web app to life, a Go or Java expert to optimize your backend, or an AI specialist to build a custom agent for your business - I'm here to help. Let's discuss your project and turn your vision into reality. Click the "Invite" button and let's get started!

Hello, I’m Hon, an accomplished full-stack developer with over ten years of experience in web development. My expertise lies in collaborating with businesses to enhance and elevate their projects. Languages, Frameworks, and Technologies: - Languages: JavaScript, PHP, Python - Frameworks/Libraries: React, Angular, Laravel, Flask, FastAPI, Scrapy, Wordpress - Technologies: Nginx, Apache, Kubernetes, Docker # Technical Competencies: - Extensive experience with large-scale distributed systems - Profound understanding of scalable backend architectures - Proficiency in microservices architecture - Advanced Linux system administration skills - Comprehensive knowledge of the AWS ecosystem I am committed to delivering exceptional results and offer a money-back guarantee to ensure your satisfaction. Partner with me, and I am confident you will see the value and impact of my contributions to your project. Thank you.

Hi, I’m Viet, a Fullstack PHP Developer with 13+ years of experience delivering secure, scalable, and efficient web solutions. My expertise includes: * Laravel: APIs, custom modules, performance optimization, upgrades * WordPress: plugins, themes, WooCommerce, site migration * CakePHP & CodeIgniter: legacy support & modernization * Database design, optimization, and analytics integration * Deep experience with ThemeForest-level theme & plugin development * Advanced WooCommerce customization (checkout logic, hooks, performance tuning) * Pixel-perfect responsive UI/UX implementation across devices & browsers * Email marketing workflow customization (FluentCRM, Brevo) * Performance optimization (Cloudflare, Redis, WP Rocket, Perfmatters) * Git-based workflows and staging-first deployment strategies * Strong debugging skills for complex custom environments * AI chatbot development and custom AI assistant integration * OpenAI, Gemini, and custom knowledge-base chatbot solutions 📌 Selected Upwork Projects * Custom LMS platform in Laravel for e-learning management * AI-powered learning assistant integrated into a Laravel LMS to support students, answer course-related questions, and recommend personalized learning paths * WordPress booking system integrated with third-party APIs * AI chatbot for customer support, lead qualification, and appointment booking on WordPress websites * WooCommerce checkout optimization for higher conversion rates * CRM upgrade and modernization using pure PHP * Shipping management system built with Node.js & React * Custom AI sales assistant trained on business-specific data for product recommendations and customer engagement 🤖 AI & Automation Solutions * Custom ChatGPT/OpenAI chatbot development * AI-powered customer support assistants * AI sales and lead-generation chatbots * Knowledge-base chatbots trained on company documents and product catalogs * Learning assistants for LMS and e-learning platforms * RAG (Retrieval-Augmented Generation) solutions for private business data * API integration with OpenAI, Gemini, CRM, booking systems, and e-commerce platforms 🌍 Other Professional Experience • Themesflat Addons for Elementor – 50,000+ active installs • Woostify – 50,000+ downloads on WordPress ORG • Aqua - Spa and Beauty WooCommerce WordPress Theme – 1,600+ sales on ThemeForest • Woostify Pro – 50,000+ users • Woostify Blocks – Gutenberg blocks for WordPress • Recently completed a custom header and footer builder plugin for the OceanWP (500k+ active installs) WordPress theme. I focus on delivering maintainable, high-performance solutions that help businesses automate workflows, improve user experience, and scale efficiently.

Hi, I am a Mid-Senior Web Developer, I have + 10 years of experience. Especially, I have good experience with: - ReactJs, Nextjs, NodeJS, NestJS - Laravel - CodeIgniter 2 - WordPress - Custom PHP - Javascript, HTML, Ajax - Redis - Jquery - MongoDB - MySql Besides, I can work good CSS, React Native. Thanks