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🔥 I'm a backend developer with 4+ years of experience in software development, specializing in building robust server-side applications and APIs. My expertise includes designing efficient RESTful endpoints, managing databases, and optimizing server configurations to ensure performance, scalability, and reliability. 💡 With extensive experience in Node.js, Express.js, NestJS, and AWS, I focus on creating back-end solutions that meet complex business requirements. If you need support with back-end development or have questions, feel free to reach out—I’m here to help! 💡𝑺𝒌𝒊𝒍𝒍𝒔 𝒂𝒏𝒅 𝒆𝒙𝒑𝒆𝒓𝒕𝒊𝒔𝒆: ✅ JavaScript ✅ TypeScript ✅ React ✅ Node.js ✅ Express.js ✅ Fastify ✅ Nest.js ✅ Sequelize /TypeORM ✅ PostgreSQL/MongoDB/Firebase ✅ Elasticsearch ✅ GraphQL ✅ Jest ✅ AWS ✅ Websockets ✅ JWT ✅ Docker ✅ Git ✅ GitHub 💡 𝑻𝒂𝒔𝒌 𝒎𝒂𝒏𝒂𝒈𝒆𝒎𝒆𝒏𝒕 𝒕𝒐𝒐𝒍𝒔: ✅ Jira ✅ Trello 🔑 Keywords: NodeJS NestJS ExpressJS ReactJS Next.JS TypeScript HTML5 CSS3 SCSS SASS Bootstrap Material-UI Webpack JavaScript Tailwind CSS GraphQL Firebase MongoDB PostgreSQL MySQL Elasticsearch Sequelize TypeORM Twilio SendGrid ReduxJS React Front-end development MERN stack API design SQL Amazon Web Services S3 EC2 Firebase RESTful APIs cloud platforms Websockets Docker Google Maps Socket.IO REST API

Hi! I’m Volodymyr, a Full Stack Developer specializing in Node.js, TypeScript, NestJS, Express, and Nuxt.js. I build modern web applications from frontend to backend, with a strong focus on clean architecture, maintainable code, performance, and reliable APIs. My main experience includes: • Building full-stack applications with Nuxt.js, Vue.js, Node.js, and TypeScript • Developing REST APIs with NestJS and Express.js • Designing backend architecture with clear separation of controllers, services, and repositories • Working with MySQL, Prisma, MongoDB, and Redis • Implementing JWT and Google OAuth authentication • Building real-time features with WebSockets • Writing unit and integration tests with Jest and Supertest • API validation and documentation with Zod and Swagger/OpenAPI • Docker, Nginx, and production deployment • SEO optimization for Nuxt.js applications I have experience working on real-world applications where frontend, backend, databases, authentication, caching, real-time communication, and external APIs need to work together as one system. I don’t just focus on making a feature work. I care about how the application is structured, how it will behave under real usage, and how easily it can be maintained and extended later. If you need a developer who can work across both the frontend and backend — whether you need a new feature, REST API, backend service, Nuxt.js application, bug fix, or integration — I can help. Let’s discuss your project and find the most practical solution.

I am a professional full stack web & mobile developer. I have 13 years of experience in building hybrid mobile apps, cross-platforms desktop apps and websites. I have a lot of tools and frameworks in under my belt and flexible in working with new technologies. A short list of my skills - JavaScript - Node.js - Express - MongoDB - React - AngularJS - React Native - Redux - MobX - NestJS - NextJS - PostgreSQL - RESTful APIs - GraphQL - TypeORM - ElectronJS - PHP - MySQL - and more ...

“Trying to cut dev costs by hiring cheap is like trying to win Le Mans with a flat tire.” – A SaaS Founder Who Learned the Hard Way As you are browsing Upwork, comparing profiles, and filtering through flashy buzzwords, here’s what you’re really looking for: Not just a command line developer — but a strategic partner who understands product, speed, and scale. Hiring the wrong dev? That means technical debt, delayed timelines, and missed market opportunities. But hiring the right one? That’s how MVPs get shipped, systems scale, and startups win. Why Work With Me? (CTO-Turned-SaaS Builder | 5+ Years Leadership) As a former CTO and founder of a fast-scaling SaaS company, I don’t just “write code.” I think like a founder, execute like a senior engineer, and deliver like a growth-obsessed partner. ✅ I own the outcome — whether it's a scrappy MVP, an investor-ready demo, or a rock-solid enterprise platform. ✅ I speak both product and tech, which means no translation layers, no fluff, and no micromanaging required. ✅ I challenge assumptions. If your feature roadmap is bloated, or your architecture is fragile, I’ll tell you. Fast. My Approach to Development Success 🔹 Business-First Thinking – Every feature ties back to revenue, retention, or speed-to-market. 🔹 Rapid Prototyping – Build fast. Test fast. Learn faster. 🔹 Scalable Architecture – Clean, modular codebases ready for growth. 🔹 Transparent Communication – Clear daily/weekly updates with zero guesswork. 🔹 Product-Minded Execution – I’ll challenge ideas, offer UX advice, and look at your app like a real user would. Full-Stack Services I Deliver 📌 MVP Development & Launch Readiness 📌 React.js & Next.js Frontend Systems 📌 Node.js / Express / MongoDB APIs 📌 Stripe, Lemonway, Hubtel Integrations 📌 Admin Panels & CRM Dashboards 📌 Scalable SaaS Architecture 📌 Third-party Integrations & Automation 📌 App Optimization & Refactors 📌 KYC Flows, Auth, Multi-Tenancy, GDPR Compliance 📌 Project Rescue & Tech Debt Reduction Industries I’ve Helped Build In 🧠 AI SaaS Tools 📦 E-commerce SaaS & Marketplaces ⚖️ LegalTech & FinTech Platforms 📞 Voicebot & Call Routing Systems 🏥 Medical & 3D Scan Integration Platforms 🎮 Esports & Tournament Systems 🌍 Equity Crowdfunding & Investor Platforms 🏠 Real Estate CRM & Lead Funnels Why Clients Stick With Me ✅ Founder-Level Thinking – I treat your product like my own ✅ 100% Reliable – You’ll never wonder where your dev went ✅ Startup-Savvy – I know what breaks, what scales, and what matters ✅ No Ego – Just clean, maintainable, production-ready code ✅ Limited Clients – I only take on a few projects to give each my full attention Still comparing devs? Cool — I would too if I were you. But before you go, here’s the truth: most developers code. Few understand why they’re building what they build. If you’re serious about launching a high-impact web app, and want a partner who gets both the product and the code — let’s talk. Limited Availability – Book Early. Let’s turn your vision into reality, together.

🏆 Top Rated Plus with 100% JSS 👨‍💻 Senior Frontend / Backend / Full Stack Developer 🚀 30+ Full Stack Projects Completed 🌟 Notable Clients: United Nations, MongoDB, MyUnisoft / Cegid / Station F, Central Bank 🌐 Available Globally: US, Canada, Europe, or any preferred time zone I bring expertise in: - Frontend: React, Next.js, Angular - Backend: Express.js, Nest.js, Flask, Django - Languages: JavaScript / TypeScript with Node.js, Python - Databases & Cloud: MongoDB, MySQL, PostgreSQL, Docker, AWS - Specialized Skills: IT Automation, Chrome Extensions, Plugins, CLI Tools, Chatbots, AI/ML/LLM Integration My experience spans a range of fields, including: 💻 Fintech 📊 AI, B2B Solutions & Data Visualization 🔓 Open-Source 🔗 Blockchain & Web3 dApps 📱 E-commerce & Online Booking 🏭 Industrial Optimization & Operations 🏥 MedTech 📈 EdTech 🌱 SaaS & Startups ♻️ Sustainability & Green Tech 𝙇𝙚𝙩'𝙨 𝙩𝙖𝙡𝙠 𝙖𝙗𝙤𝙪𝙩 𝙮𝙤𝙪𝙧 𝙞𝙙𝙚𝙖𝙨 𝙖𝙣𝙙 𝙩𝙧𝙖𝙣𝙨𝙛𝙤𝙧𝙢 𝙩𝙝𝙚𝙢 𝙞𝙣𝙩𝙤 𝙧𝙚𝙖𝙡𝙞𝙩𝙮! 𝘾𝙡𝙞𝙘𝙠 𝙩𝙝𝙚 "𝙄𝙣𝙫𝙞𝙩𝙚" 𝙗𝙪𝙩𝙩𝙤𝙣 𝙖𝙗𝙤𝙫𝙚 𝙩𝙤 𝙨𝙩𝙖𝙧𝙩 𝙖 𝙘𝙤𝙣𝙫𝙚𝙧𝙨𝙖𝙩𝙞𝙤𝙣.

𝐋𝐨𝐨𝐤𝐢𝐧𝐠 𝐟𝐨𝐫 𝐚 𝐅𝐮𝐥𝐥 𝐒𝐭𝐚𝐜𝐤 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 𝐚𝐯𝐚𝐢𝐥𝐚𝐛𝐥𝐞 𝐢𝐧 𝐲𝐨𝐮𝐫 𝐭𝐢𝐦𝐞𝐳𝐨𝐧𝐞 𝐚𝐧𝐝 𝐫𝐞𝐚𝐝𝐲 𝐟𝐨𝐫 𝐪𝐮𝐢𝐜𝐤 𝐜𝐨𝐦𝐦𝐮𝐧𝐢𝐜𝐚𝐭𝐢𝐨𝐧 𝐡𝐞𝐥𝐩𝐢𝐧𝐠 𝐛𝐮𝐬𝐢𝐧𝐞𝐬𝐬𝐞𝐬 𝐭𝐮𝐫𝐧 𝐢𝐝𝐞𝐚𝐬 𝐢𝐧𝐭𝐨 𝐟𝐚𝐬𝐭 𝐬𝐜𝐚𝐥𝐚𝐛𝐥𝐞 𝐫𝐞𝐯𝐞𝐧𝐮𝐞 𝐠𝐞𝐧𝐞𝐫𝐚𝐭𝐢𝐧𝐠 𝐰𝐞𝐛 𝐚𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬 𝐰𝐢𝐭𝐡 𝐨𝐯𝐞𝐫 𝟓 𝐲𝐞𝐚𝐫𝐬 𝐨𝐟 𝐞𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 𝐛𝐮𝐢𝐥𝐝𝐢𝐧𝐠 𝐒𝐚𝐚𝐒 𝐩𝐫𝐨𝐝𝐮𝐜𝐭𝐬 𝐰𝐞𝐛 𝐚𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬 𝐚𝐧𝐝 𝐀𝐈 𝐩𝐨𝐰𝐞𝐫𝐞𝐝 𝐬𝐲𝐬𝐭𝐞𝐦𝐬 𝐟𝐨𝐫 𝐬𝐭𝐚𝐫𝐭𝐮𝐩𝐬 𝐚𝐧𝐝 𝐛𝐮𝐬𝐢𝐧𝐞𝐬𝐬𝐞𝐬 Full Stack Developer | SaaS, AI & Web Application Expert (5+ Years Experience) 🚀 What I Can Help You Build SaaS Applications & MVP Development * Full Stack Web Applications * AI Applications & Chatbots * Business Automation Tools * CRM & Third-Party API Integrations * Admin Panels & Dashboards * Booking & Reservation Systems * E-Commerce Platforms * Backend APIs & Microservices * Application Optimization & Performance Improvements 🏢 Industries I Have Worked With Healthcare Appointment systems, patient management platforms, workflow automation systems Education (EdTech Learning management systems, course platforms, student dashboards Real Estate (PropTech Property listing platforms, booking systems, CRM integrations E-Commerce Order management systems, inventory control, marketplace integrations SaaS & Startups MVP development, scalable system architecture, product launch solutions 💼 What Clients Achieve Working With Me * Faster product launch without unnecessary complexity * Reduced operational costs through automation * Replacement of manual processes with smart systems * Improved user experience, retention, and conversions * Scalable software built for long-term growth 🛠 Core Tech Stack Backend Development PHP (Laravel), Python, Node.js Frontend Development React.js, JavaScript (ES6), HTML5, CSS3 Full Stack Architectures MERN Stack (MongoDB, Express, React, Node.js) MEAN Stack (MongoDB, Express, Angular, Node.js) Databases MySQL, PostgreSQL, MongoDB AI & Automation Python, AI APIs, workflow automation, web scraping, intelligent agents API & Integrations REST APIs, payment gateways, CRM systems, third-party integrations 📩 Let’s Work Together If you're looking for a reliable Full Stack Developer to build or scale your product, I am available in your timezone and ready for quick communication. Let’s turn your idea into a scalable, high-performance software product. 🔍 Relevant Keywords Full Stack Developer || SaaS Developer || Web Application Developer || AI Developer || Backend Developer || Frontend Developer || Laravel Developer || React Developer || Node.js Developer || Python Developer || MERN Stack Developer || MEAN Stack Developer || API Developer || REST API Development || CRM Integration Developer || Payment Gateway Integration || Booking System Developer || E-Commerce Developer || Dashboard Developer || Admin Panel Developer || Automation Developer || Business Automation Expert || AI Chatbot Developer || MVP Developer || Startup Developer || Scalable Web Applications || Software Engineer || Database Design || MySQL Expert || PostgreSQL Expert || MongoDB Expert || Performance Optimization || Web App Speed Optimization