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Senior AI & Full-Stack Certified Engineer Python| Django | Data Sciencе and МL| Vue.js | Next | Nuxt | Node.js | React Are you looking to build an advanced, AI-driven platform with an ultra-fast, seamless user experience? I specialize in bridging the gap between cutting-edge Artificial Intelligence and high-performance web applications. With over 7 years of commercial experience, I am a Certified Vue.js & Node.js Expert with deep Backend engineering skills (PHP, Node.js, REST APIs). My core strength is developing scalable full-stack architectures and integrating intelligent Generative AI features, such as custom AI chatbots, multi-provider systems, automated quoting tools, and smart user workflows. Where I Bring the Highest Value: - AI Integration & Features: Building AI-driven SaaS marketplaces, implementing smart interactive chatbots (ChatGPT API), and automating complex business logic using AI tools. - Advanced Frontend Engineering: Creating high-performance, responsive UIs with Vue.js (2/3), Nuxt.js, React.js, and Next.js. Expert in SSR optimization, state management (Vuex/Redux), and TypeScript. - Scalable Backend & Infrastructure: Designing robust backend systems with Node.js/PHP, managing complex user databases (MongoDB, PostgreSQL, MySQL), and handling legacy-to-modern migrations without downtime. Selected Project Highlights: - AI-Driven SaaS Marketplace: Engineered a complex multi-provider platform from scratch, integrating automated quoting tools, booking calendars, and custom AI chatbot interfaces. - Enterprise High-Load Platforms: Successfully migrated legacy webinar platforms to Nuxt-based static architectures, significantly accelerating page load speeds, enhancing Core Web Vitals, and maximizing SEO. - Subscription-Based Web Apps: Built secure, scalable social networking and educational platforms tailored for content monetization and seamless i18n internationalization. Why Choose Me: - 100% Job Success & Top Rated Plus: Backed by the technical excellence of the Greenice team, ensuring top-tier communication, clean code structure, and zero-crash deployment. - Clean & Scalable Code: I don’t just build features; I construct architectures that grow with your business and remain easy to maintain. Let’s elevate your platform with powerful UI and smart AI capabilities. Click "Invite to Job" to discuss your project requirements and technical stack!

Greetings! 👋 𝗜 𝗮𝗺 𝗮 𝗹𝗲𝗮𝗱 𝘀𝗲𝗻𝗶𝗼𝗿 𝗲𝗻𝗴𝗶𝗻𝗲𝗲𝗿 𝘄𝗶𝘁𝗵 𝟳 𝘆𝗲𝗮𝗿𝘀 𝗼𝗳 𝗰𝗼𝗺𝗺𝗲𝗿𝗰𝗶𝗮𝗹 𝗲𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲, 📎 Are you seeking a professional Senior Front-end to bring your web application to life? That means I'm here for your project! I am dedicated to transforming your visions into stunning, functional, and user-centric digital experiences. 📎 This profession is my passion, and I enjoy every moment of crafting digital experiences that set you apart and drive success for your business. 📎 Programming languages and frameworks I use: 📍 JavaScript | TypeScript 📍 React.js | Next.js | Gatsby.js | Vue.js | Node.js | Express.js 📍 SCSS | CSS Module | Less | Sass 📍 Tailwind | Bootstrap | Material UI | styled-components 📍 GraphQL | MySQL | PostgreSQL | MongoDB 📍 React Testing Library (jest) 📍 Figma | Adobe XD 📎 The statistics that I am proud of: 📌 17 satisfied customers from the USA 🇺🇸 📌 11 delighted partners from the EU 🇪🇺 📌 3 thrilled associates from Asia 🌏 📌 2 projects from Australia 🇦🇺 👨‍🎨 30+ completed projects/assignments as a freelancer ✏️🎨 💬 I'd love to hear about your project and answer any questions you may have. 📎 I am looking forward to working with you! Buzzwords: Front-End Development Back-End Development Full Stack react js developer full stack react js react js node js react next js react js website nextjs developer next.js tailwind react nextjs HTML5 CSS3 SCSS SASS JavaScript TypeScript ReactJS React.js Redux Next.JS Tailwind CSS Bootstrap Material-UI Ant Design Webpack Babel CSS Modules Styled Components Responsive Design UX/UI Design Figma Sketch Adobe XD InVision Zeplin Website Web Application Single Page Application Progressive Web App Website Redesign Ecommerce Website Animation Charts WebSockets Socket.IO RESTful APIs GraphQL Third-party APIs Stripe PayPal Twilio Google Maps MapBox Design Expertise Testing Jest Mocha Enzyme Cypress Storybook Component Libraries Server-Side Rendering Headless CMS Contentful Sanity.io Strapi Git GitHub GitLab Bitbucket Netlify Vercel Heroku Firebase Cloud Platforms AWS Azure Google Cloud Docker Kubernetes Security Data Privacy Web Performance Browser Compatibility Cross-Browser Testing Mobile First Design Usability Testing Analytics User Testing Prototyping Wireframing Responsive Images SVG Canvas API Design JSON Web Components HTML Templates Custom Elements DOM State Management React Query React Table Formik React Hook Form Recharts NextAuth Auth0 AWS Amplify Node.js Nest.js Express Python PHP Java Ruby Laravel

🚀 15+ Years Full Stack Developer | Clients: NASA, Amazon, Google, MongoDB, Deloitte, Neom 💡 Full Stack Developer expert in Web, Mobile, Blockchain, Serverless, and Cloud (AWS, Azure, Google Cloud) solutions 📱 React | React Native | Flutter | Node.js | Python | TypeScript | K8S | DeFi | NFTs – versatile Full Stack Developer toolkit 🌐 Full Stack Developer ready for any scale – from small fixes or MVPs to complex enterprise apps ✅ Flexible engagement models: hourly, fixed-price, team scaling, full-cycle delivery – adaptable Full Stack Developer services 🙋‍♂️ Full Stack Developer able to build or scale teams whenever your project demands success With over 15 years of experience as a Full Stack Developer, I’ve launched and scaled high-performance web and mobile products across fintech, blockchain, aerospace, e-commerce, and healthcare. My extensive track record as a Full Stack Developer for global brands and ambitious startups guarantees cutting-edge, reliable solutions delivered efficiently. Recent Case Studies • Fintech Wallet “Trastra”: crypto and fiat wallet with 300 000+ users, crafted with Full Stack Developer precision. • Farm Management App “Herdwatch”: trusted by 50 000 agribusinesses, engineered through a Full Stack Developer approach. • Marketplace “Bidsheet”: wholesale electronics auctions serving hundreds of thousands, architected by a Full Stack Developer mindset. Technical Skills & Specializations As a Full Stack Developer I unite frontend and backend expertise for seamless products: • Frontend: React, React Native, Flutter, TypeScript, HTML5, CSS3 • Backend: Node.js (Express.js), Python (Django, Flask), GraphQL, RESTful APIs • Blockchain & Crypto: Ethereum, Solidity, Smart Contracts, DeFi, NFTs • Cloud & DevOps: AWS, Azure, Google Cloud, Serverless (Lambda, Functions), Docker, Kubernetes, CI/CD • Databases: MongoDB, PostgreSQL, MySQL, design & optimization • Security & Compliance: PCI DSS, secure coding, infrastructure audits • Architecture: Microservices, performance, scalability, reliability Collaboration Options • Short-term projects: prototypes, quick fixes, new features, audits • Long-term engagements: continuous product evolution • Full-cycle development: requirements to maintenance • Flexible pricing: hourly or fixed-price, whatever fits • Team scaling: rapid assembly of specialists led by a Full Stack Developer My Commitment I am a Full Stack Developer dedicated to clear communication, transparency, and tangible business outcomes. Expect high-quality, maintainable, secure code with user-centric design and robust functionality. Fluent in English, I collaborate smoothly with teams worldwide. Let’s connect and discuss how this Full Stack Developer can turn your vision into reality!

Hi, I’m Yaroslav – a Senior Full Stack Developer with 6+ years of experience building scalable, high-performance web applications. I specialize in JavaScript (ES5+), TypeScript, Node.js, React.js, Angular, and Next.js, with a strong background in cloud infrastructure (AWS, Docker, Kubernetes) and database management (PostgreSQL, MongoDB, DynamoDB). 💡 What I Bring to the Table: ✔ Full-Stack Expertise: From backend APIs to dynamic front-end interfaces, I build seamless, user-friendly applications. ✔ Scalable & Secure Architecture: I design robust, maintainable solutions using NestJS, Express.js, GraphQL, and REST APIs. ✔ Cloud & DevOps: Skilled in AWS Cognito, S3, Lambda, SQS, EC2, ECS, and deployment pipelines with Docker & Jenkins. ✔ Database Management: Optimized SQL & NoSQL databases (PostgreSQL, MySQL, Redis, Firebase) for high performance. ✔ Agile & Best Practices: Experienced in SCRUM, Kanban, TDD, and BDD to ensure efficient workflows and high-quality code. 🚀 Notable Projects: 🔹 IoT & FoodTech (USA, 27 months): Led full-stack development for an award-winning industry leader, implementing AWS cloud solutions. 🔹 Social Commerce (Germany, 4 months): Built an e-commerce and social networking platform similar to Amazon & AliExpress. 🔹 Marketing & Analytics (USA, 15 months): Developed a WhatsApp Bot, data analytics, and Next.js-based front-end for an online community platform. 🔹 AI-Powered Healthcare (USA, 6 months): Built an ECG-based heart disease prediction system using AI and AWS services. 🔹 Online Book-Sharing (USA, 9 months): Designed and developed a full-stack platform from scratch, including backend, frontend, and DevOps setup. 🎯 Why Hire Me? ✔ I translate business needs into technical solutions that drive results. ✔ I write clean, scalable, and efficient code to ensure long-term project success. ✔ I optimize performance and security while keeping applications user-friendly. ✔ I collaborate effectively with teams, stakeholders, and clients to ensure smooth project execution. 💬 Let’s discuss how I can help build your next high-performance web application!