Frontend developer with 8+ years of experience, specializing in Vue.js and modern JavaScript/TypeScript ecosystems. Freelancing since 2018, building web applications for clients worldwide. Proven track record of inheriting complex legacy codebases and delivering clean, maintainable Vue 3 migrations. Currently integrating AI tooling (Cursor, Claude Code) into development workflows to accelerate delivery while maintaining code quality. Working knowledge of backend technologies (Node.js, NestJS, PHP/Laravel) when full-stack support is needed. Skills Vue 3, Vue 2, Composition API, Options API, TypeScript, JavaScript, Vuetify, Pinia, Vuex, Vue Router, TanStack Query, VueUse, Vite, Webpack, npm, Git, Vitest, Unit Testing, Component Testing, UI & Data Visualization Vuetify, Material Design, Chart.js, Responsive Design, CSS, SCSS/Sass, Ionic (Mobile Development), Auth0, OAuth, REST APIs, Axios, WebSockets, Stripe, Node.js, Express, NestJS, PHP, Laravel, MongoDB, MySQL, Cursor, Claude Code, AI assisted development, AI workflows. Speak spanish and english. Flexible schedule.

Hi everyone 👋 I'm a high-skilled (7+ years) Full-Stack Developer. I have 8,000+ hours of a proven track record and 16 completed jobs here on Upwork. Through many projects, I have mastered problem-solving skills and just fell in love with what I'm doing. Creating new products is what brings me much more joy than anything else. I especially like small and big projects that require uncommon approaches and use of the most efficient methods. My skills: — JavaScript/ES6; — Typescript; — Cursor, Claude Code; — Node.js, Express.js; — React.js/Next.js; — Redux/Redux Toolkit/Tanstack-Query/Zustand/React Context; — HTML5, CSS3 and LESS (SASS); — React-Native IOS/Android, Expo; — Material UI, Ant Design, styled-components, Tailwind; — Agile: Jira, Trello, Notion, Linear and Slack; Other: Webpack, REST APIs, Git, Docker, GitHub Actions (CI/CD pipeline). Databases: MongoDB, Mongoose, Firebase/Firestore, Planescale, Supabase, ClickHouse Familiar with: AWS, Electron, Inngest, Redis. I'm open to both part-time and full-time positions, so feel free to send me an invitation any time! You'll be rewarded once we work together :)

🚀 Top Rated Plus Full Stack & AI Automation Developer | 15+ Years Experience I’m a Top Rated Plus freelancer with 15+ years of experience helping startups and businesses build scalable web applications, SaaS platforms, AI systems, and automation solutions. I’ve worked with 100+ clients worldwide with a 100% success rate, delivering reliable software, scalable architectures, and business-focused solutions that help companies grow faster and automate operations efficiently. My expertise combines modern full stack development with AI automation, allowing me to build complete end-to-end systems from frontend applications and backend APIs to AI agents, automation workflows, and scalable databases. ━━━━━━━━━━━━━━━━━━ 💻 Full Stack Development ━━━━━━━━━━━━━━━━━━ Frontend: • React.js • JavaScript (ES6+) • Redux • Responsive UI Development • Admin Dashboards & SaaS Interfaces Backend: • PHP • Laravel • CodeIgniter • Node.js • Express.js • REST APIs • OAuth & Third-Party Integrations Databases: • MySQL • PostgreSQL • MongoDB Additional Expertise: • SaaS Development • API Integrations • Web Scraping & Data Automation • Payment Gateway Integrations • CRM Integrations • Scalable System Architecture ━━━━━━━━━━━━━━━━━━ 🤖 AI & Automation ━━━━━━━━━━━━━━━━━━ • AI agents for workflow automation • Business automation using n8n & GoHighLevel • GPT-powered chatbots • Website & WhatsApp AI assistants • Customer support automation • RAG-based AI systems • Voice AI using ElevenLabs + OpenAI • AI phone assistants & appointment booking systems ━━━━━━━━━━━━━━━━━━ ⚙️ Tech Stack ━━━━━━━━━━━━━━━━━━ Frontend: React.js, JavaScript, Redux Backend: PHP, Laravel, CodeIgniter, Node.js, Express.js Databases: MySQL, PostgreSQL, MongoDB AI & Automation: OpenAI, Claude, n8n, GoHighLevel, ElevenLabs, RAG Other: APIs, OAuth, Web Scraping, Data Automation ━━━━━━━━━━━━━━━━━━ 📈 What I Deliver ━━━━━━━━━━━━━━━━━━ ✔ Scalable SaaS platforms ✔ AI-powered automation systems ✔ Secure backend APIs & integrations ✔ High-performance web applications ✔ Automation workflows that reduce manual work ✔ Clean, maintainable, production-ready code ━━━━━━━━━━━━━━━━━━ 🎯 Industries ━━━━━━━━━━━━━━━━━━ • SaaS Startups • AI Products • Real Estate • Healthcare • eCommerce • Agencies ━━━━━━━━━━━━━━━━━━ ⚡ Why Clients Choose Me ━━━━━━━━━━━━━━━━━━ • 15+ years of development experience • Strong combination of AI + Full Stack expertise • Clean and scalable solutions • Reliable communication & on-time delivery • Focus on business outcomes and scalability 💬 Let’s build something smart and scalable. Send me a message to discuss your project.

Ladies & gentlemen, I am a full-stack developer with years of experience in IT, during this time I develop, host, and manage complex web-based software applications. I would be glad to improve the efficiency of your work processes by implementing qualified tools in your current or future system. I have extensive experience in developing internal software with various features and functions (costing, calculations, automation, conversion, etc.) with the possibility of monetization depending on your plans. For complex tasks and calculation-intense problems, I use: - PHP, Laravel, Symfony, Yii2, Zend, Node.js, Next.js - JavaScript frameworks: JQuery, Vue.js, React.js, - Databases, SQL & NoSQL: MySQL, PostgreSQL, Elastic Search, MongoDB I believe in concepts such as communication, accountability, transparency, flexibility, and most importantly, results since my slogan is - '' Do everything 100% or don't bother with it at all'' Best Regards Serhii keywords to find me: • End-to-End Software Development for Startups • Minimum Viable Product (MVP) development • Business Automation • Improvement and customization of existing projects • SAAS solutions • E-commerce • Marketplaces • Social Networks • CRM, ERP, HRM, HMS systems • GPT-3/4, ML integration • Landing Page development • AWS • Digitalocean • Google Cloud Platform • Linode • Custom • Vue.js (Vue, VueJS), Vuetify, Nuxt • React (ReactJS, React.js) • Angular (AngularJS, Angular.js) • Alpine.js • TypeScript (Type Script) • Tailwind • SCSS / LESS • PHP • Laravel • Lumen • Yii, Yii2 • Symfony • CakePHP • Node.js • Adonis.js • PostgreSQL • MySQL (MariaDB) • MongoDB • Firebase • Redis • Elasticsearch • Solr • Amazon Redshift • AWS SQS • RabbitMQ • Laravel Horizon • Apache Kafka • Sentry.io • Snyk • New Relic • Kibana • Opsgene • Node.js • Next.js • Much more

𝗙𝗥𝗢𝗡𝗧-𝗘𝗡𝗗 | 𝗕𝗔𝗖𝗞-𝗘𝗡𝗗 | 𝗠𝗢𝗕𝗜𝗟𝗘 | 𝗗𝗔𝗧𝗔𝗕𝗔𝗦𝗘𝗦 | 𝗖𝗟𝗢𝗨𝗗 𝗦𝗘𝗥𝗩𝗜𝗖𝗘𝗦 | 𝗨𝗜/𝗨𝗫 𝗗𝗘𝗦𝗜𝗚𝗡 ⚡️As an experienced Full Stack JavaScript Developer, I specialize in building scalable, dynamic, and user-friendly applications. I have a strong command of modern JavaScript frameworks such as React, Angular, Next, and Node.js, alongside animation libraries like GreenSock (GSAP) to deliver high-performance, interactive user interfaces. ⚡️In addition to my frontend expertise, I am highly skilled in backend development, with a strong command of Node.js, Express, and JWT for authentication and security. I also bring extensive experience working with SQL and NoSQL databases, building robust and scalable APIs that integrate seamlessly with frontend applications. ⚡️In addition to web applications, I have hands-on experience in developing mobile applications using React Native that combine intuitive UI/UX with powerful backend support. Using modern cross-platform tools, I deliver apps that meet diverse client and user needs. ⚡️Throughout my career, I have worked on a variety of projects including eCommerce systems, Enterprise Resource Planning (ERP) solutions, and SaaS products. My expertise allows me to contribute at all stages of development, from planning and backend API development to frontend design and user experience optimization. 🤩Feel free to reach out with any questions or project ideas – I'm here to chat, call, and assist you!
 𝐈𝐧𝐝𝐮𝐬𝐭𝐫𝐢𝐞𝐬 𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞: 🌅 Travel and Tours 🛒E-commerce 🚚Logistics and Transportation 📚Enterprise Resource Planning (ERP) 📈 Marketing Automation Platform 📌 𝗠𝗬 𝗧𝗘𝗖𝗛 𝗧𝗢𝗢𝗟𝗞𝗜𝗧: ● Front-End: React, Angular , Nextjs, Gatsby, GSAP ● Back-End: Node.js, Express.js, .Net MVC, .Net Core ● Databases: MySQL, MSSQL, MongoDB, Ontotext GraphDB ● Mobile: React Native, Expo, Ionic ● Version Control: Git ● API Integration: REST, GraphQL ● UI/UX Design: Figma ● No code: Wordpress ● Third Party: Stripe, Paypal, Heap.io, Google Maps, Leaflet, Google places, Sendgrid, Twilio What to expect: 🔷 Full Stack development 🔷 JavaScript development 🔷 React development 🔷 Mobile App Development 🔷 Node development 🔷 Web development 🔷 React Native development 🔷 API development 🔷 Web and Mobile development 🔷 React, Node, React Native, Next, MERN development. Why hire me? —————— 🔷Expert Full Stack Developer, JavaScript Developer, React, Node, Web developer with over 6+ years of experience. 🔷With experience in delivering eCommerce systems, ERPs, and SaaS products, I have successfully built high-performance applications that are scalable and tailored to business needs. 🔷I will provide support even after our project has finished to make sure everything is working exactly the way you like it. 🔷Honest and fast communication. 🔷Attention to detail is a must for all of my projects.
 🔷I prioritize clean, maintainable code and follow best practices in security, performance, and testing to ensure your project is built for success. 💡 𝐒𝐮𝐦𝐦𝐚𝐫𝐲: With a comprehensive skill set in frontend and backend technologies, mobile development, and service integration, I offer end-to-end solutions. I excel in large team environments and client interactions, committed to transforming ideas into successful projects. Any questions? Send me a message, and I will come back to you ASAP and will make everything clear for you.🌸 Let's connect 🤝 grow 🚀 together and boom 💥 the world. Keywords🔑 Full stack web developer, Full stack development, Web developer, Web development, Web design, Website design, Web applications, Front-End Development, Website, Responsive Design, ReactJS, Next.JS, Gatsby, TypeScript, HTML5, CSS3, SCSS, SASS, Bootstrap, Material-UI, Webpack, Ant Design, Angular2+, JavaScript, Tailwind CSS, GraphQL, Redux, Redux Toolkit, , React Bootstrap, Website Redesign, Web Application, Ecommerce Website, , Figma, Performance Optimization, UX/UI Design, Back-End Development, Mobile App Development, MERN stack, MongoDB, Express.js, React.js, Node.js, Next.js, React Native[IOS,Android], API design, SQL, Amazon Web Services, S3, Expo, RESTful APIs, cloud platforms, AWS, Azure, Websockets, Third-party APIs, Stripe, Twilio, Google Maps, Google Places, Socket.IO, Design Expertise, Software Development, Android App Development, Native App Development, Heap, Stripe, SendGrid, REST API, ExpressJS, Material Design, Payment Gateways, Algorithms, Data Analysis, Full stack developer, , react js, HTML CSS, html CSS javascript, PSD to HTML, Backend, backend developer, backend engineer, Express, express js, MEAN, MERN, Greensock, GSAP, SVELTE, SQL

I am a Fullstack Web Developer, with a primary focus on back-end development. My main programming language is JavaScript, and I work extensively with technologies like React, Angular, ExpressJS, and NestJS. I have a strong passion for exploring new programming trends and methods, always seeking to stay up-to-date with the latest in tech. In my free time, I enjoy diving into personal projects or learning new tools and techniques to expand my expertise and enhance my problem-solving skills.

💻Adaptive full-stack software developer with extensive experience in modern web technologies such as JavaScript, React, Tailwind, Node.js, SQL, and Next.js. I bring strong skills in punctuality, responsability, organization, teamwork, forward-thinking, and logic,. 🚀I've contributed to several projects, including an ERP platform and a collaborative website where a team of developers (myself included) offer tailored services to diverse clients. These experiences have sharpened my abilities in both front-end and back-end development. 🔧I work with tools like Python, SQL, JavaScript, HTML, CSS, and Tailwind to build scalable, efficient, and user-friendly solutions. I’m passionate about crafting intuitive interfaces and robust systems that solve real-world problems. 🧠With a background in science and computing, I combine strategic thinking with technical expertise. I embrace challenges with a proactive mindset and strive to exceed expectations. My collaborative spirit and commitment to continuous improvement make me a valuable asset to any web project.

I’m a full-stack web developer with 7 years of experience building, improving, and maintaining websites and web applications for businesses, agencies, and growing teams. I can help with: • Custom WordPress development (custom themes, plugins, templates, and functionality) • PHP and Laravel development • React application development • WooCommerce and membership websites • API and third-party integrations • Website migrations and rebuilds • Bug fixing and technical troubleshooting • Responsive front-end development • Performance and page-speed improvements • Technical SEO, analytics, and tracking setup • Ongoing website maintenance and development support I have experience working with WordPress, WooCommerce, ACF, Elementor, PHP, Laravel, React, Vue, Node.js, MySQL, PostgreSQL, AWS, Google Cloud, Git, and automated testing tools. Clients appreciate that I communicate clearly, ask the right questions, and focus on solutions that are practical, maintainable, and aligned with their business goals. I’m comfortable working independently, collaborating with designers and marketing teams, or supporting an existing development team. I respond within 24 hours.

Do you need a modern, responsive, and easy-to-manage website? I’m a Frontend Developer specializing in React, Next.js, and TailwindCSS, focused on building clean, fast, and user-friendly interfaces. With experience across JavaScript, TypeScript, Node.js, Express, Sequelize, MySQL, PostgreSQL, and Firebase, I handle projects from concept to deployment, ensuring smooth communication and reliable results. 🔹 What I Offer • Frontend development with React, Next.js, and Tailwind CSS • Integration with Firebase for authentication and real-time data • Backend setup using Node.js, Express, and PostgreSQL • Figma to responsive UI conversion • Code refactoring, bug fixing, and project maintenance 🌟 Why Work With Me • I take full ownership of every project – from architecture to deployment • Clear, consistent communication at every stage • Focus on usability, scalability, and long-term maintainability • Always committed to delivering real value, not just finished code Let’s collaborate to bring your ideas to life – whether you need a custom web app, a portfolio site, or help improving your current project. 💬 Send me a message, and let’s start! 🔑 Tech Stack: React, Next.js, JavaScript, TypeScript, Tailwind CSS, Node.js, Express, PostgreSQL, Firebase, HTML, CSS, WordPress, Figma, Responsive Design, Vercel, Render, neon.tech, SanityCMS, Git, GitHub

I am a Web developer with 8 years of experience in PHP, MySQL, CSS, and Javascript. My main skill is slicing, turning a graphic layout into a functional site in reasonable time. I have a good experience in working remotely, with a huge time zone difference. And medium skills in data base administration.