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⭐️𝐒𝐞𝐧𝐢𝐨𝐫 𝐅𝐮𝐥𝐥 𝐒𝐭𝐚𝐜𝐤 𝐝𝐞𝐯 𝐰𝐡𝐨 𝐰𝐫𝐢𝐭𝐞𝐬 𝐜𝐨𝐝𝐞 𝐲𝐨𝐮𝐫 𝐟𝐮𝐭𝐮𝐫𝐞 𝐭𝐞𝐚𝐦 𝐰𝐨𝐧'𝐭 𝐜𝐮𝐫𝐬𝐞. 💡 130+ production-grade products delivered (SaaS, MVPs, AI systems, marketplaces) 💰 $16.5M+ revenue generated by client products 👥 157K+ active users powered by systems I built ⚡ 1M+ API requests/month at 99.9% uptime 🚀 MVP → production in 2–6 weeks, architected to scale from day one 🔥 WHAT I DO You're building a SaaS, MVP, or AI-powered product. You need a Full Stack Developer who can own React frontend and Node.js backend end-to-end, ship in weeks (not quarters), and write code your future team won't throw away. That's what I do. Early-Stage MVP, Productionizing a prototype, Scaling a Live SaaS Platform, or Legacy Codebase rebuild - I've built this on React, Next.js, Node.js, TypeScript, Supabase, PostgreSQL, AWS over 10+ years. 🔥 ROLES I TAKE ON (10+ YEARS EXPERIENCE) ✔ Full Stack Developer / Full Stack Engineer — 40+ end-to-end SaaS platforms (React + Node.js), 10+ years ✔ Frontend Developer / Front-End Developer — 30+ production UI builds, 10+ years ✔ React Developer / React.js / ReactJS Developer — scalable React apps since 2015, 10+ years ✔ Node.js / NodeJS Developer / Backend Developer — 25+ APIs, 1M+ req/month, 10+ years ✔ Vue.js Developer / Nuxt.js Developer — 8+ Vue projects, 8+ years ✔ Next.js Developer / NextJS Developer — 15+ SSR/SSG SaaS platforms, 7+ years ✔ TypeScript Developer / JavaScript Developer — 50+ typed and untyped JS codebases, 10+ years ✔ SaaS Developer / Web Application Developer / Web App Developer — MVP to scale, 10+ years ✔ Lead Frontend Engineer / Senior Full Stack Engineer — team leadership on 18+ projects 🔥 INDUSTRIES I SERVE ⚖️ For LegalTech founders — 6+ Case Management Systems, Document Workflows, Client Portals, Compliance SaaS 🏥 For Healthcare & MedTech — 8+ Patient Platforms, Telehealth, HIPAA-Compliant data, Clinic Management SaaS 📦 For Logistics & supply chain — 5+ Logistics Platforms, real-time tracking (sea/air/truck), Project44, INTTRA, EDI 🛒 For Marketplace & e-commerce — 15+ Multi-Vendor Marketplaces, B2B & Two-Sided Marketplace, Stripe, bidding, complex search 🤖 For AI startups — 12+ AI-Powered products: OpenAI / Claude API / LLM, RAG Chatbots, AI Agent Platforms, vector DBs, FastAPI, browser extensions 📝 For No-code & enterprise SaaS — 10+ Form Builders, Admin Dashboards, Internal Tools, Microservices, Multi-tenant 🌐 For Media, AdTech & publishing — 6+ Publisher Platforms, CMS, payment gateways, Analytics Dashboards 🏠 For Real estate & PropTech — Property Listings, Bidding & Auction systems, Agent Dashboards 💰 For FinTech founders — Stripe Connect, subscription billing, multi-currency, KYC, Fintech MVP 📚 For EdTech — course delivery, student dashboards, progress tracking, live sessions 🔥 RESULTS I DELIVER ✔ MVP → production in 2–6 weeks, 35% fewer bugs, 5–8 weeks shorter delivery cycle ✔ Frontend: LCP under 1.5s, Lighthouse 90+, bundle reduced 40%, 18–27% engagement uplift ✔ Backend: 1M+ API requests/month, 99.9% uptime, 40–60% lower latency ✔ Database: 3–5x faster response, 70% less DB load; 90% faster workflows, 65% fewer back-office actions ✔ +30% conversion on React / Next.js apps; 15–22% better marketplace lead quality ✔ 15,000+ shipment operations/month, 2,423+ completed orders, 30,000+ healthcare users ✔ 20+ SaaS MVPs launched, 47% fewer bugs in legacy modernization 🔥 HOW I WORK I think like a product engineer, not a code-monkey. Before writing a line, I align on the business outcome — who the user is, what they pay for, where the product needs to be in 6 months. Then I ship in weekly demos and stay available on Slack / Telegram for fast turnaround. Typical cycle: 1️⃣ Discovery & scoping (2–3 days) — define MVP boundary 2️⃣ Architecture — clean foundations, scalable schema, right stack 3️⃣ Weekly sprints with demos — progress every week 4️⃣ Production launch — CI/CD, monitoring, error tracking 5️⃣ Post-launch support — most clients keep me on 🔥 TECH STACK Frontend: React.js, ReactJS, React Hooks, Next.js, NextJS, Vue.js, Nuxt.js, TypeScript, Redux, Zustand, Tailwind CSS, shadcn/ui Backend: Node.js, NodeJS, Express.js, NestJS, Python, FastAPI, REST, GraphQL, WebSockets Database: PostgreSQL, Supabase, MongoDB, MySQL, Redis, Prisma Supabase: Auth, Row-Level Security, Edge Functions, Realtime, Storage AWS: Lambda, S3, RDS, EC2, CloudFront, API Gateway, SQS, SNS, Cognito, ECS Other cloud: Firebase, Vercel, Netlify, Cloudflare AI / ML: OpenAI API, Claude API, LangChain, RAG, RAG Chatbot, AI Agent, pgvector, Computer Vision Payments: Stripe Subscriptions, Stripe Connect, Stripe Checkout, Stripe Billing, PayPal Integrations: Twilio, SendGrid, Resend, Slack API, Telegram Bot API, EDI, Project44, Mobile: React Native, React Native Expo, iOS / Android DevOps: Docker, GitHub Actions, CI/CD, Sentry 🚀 Building a SaaS, MVP, marketplace, or AI-powered product? Click "Invite" or "Hire" and send the brief.

📈 My last landing page increased conversions by 60% in the first month. A healthcare monorepo app I optimized now loads 3x faster and reduced bugs by 70%. 100% Job Success | ⭐⭐⭐⭐⭐ Feedback | Clients keep coming back for more 🧑‍💻 4+ 𝘆𝗲𝗮𝗿𝘀 of proven experience building fintech, landing websites, SaaS, and healthcare products. Clients value me for speed, proactive communication, and results that require minimal revisions. ⭐️ Max Prosperi: "⭐⭐⭐⭐⭐ Nicholas (Mykola) jumped into a complex codebase with minimal onboarding and delivered high-quality work at impressive speed. Clear communication, thoughtful commits, reliable delivery." ⭐️ Aleks Zimak: "⭐⭐⭐⭐⭐ Nicholas (Mykola) quickly turned complex Figma designs into clean, responsive code. His proactive approach, attention to detail, and fast delivery made collaboration seamless. Highly recommend!" ⭐️ Ilan Cohen: "⭐⭐⭐⭐⭐ "Excellent freelancer! I worked with Mykola on securing my website access, as I had a mess between Github, servers, Lovable access, and more. Mykola reordered everything very quickly, and thanks to him, I can work again on my site!" 🛠 What I deliver: • Responsive SPAs & dashboards from Figma • SEO-ready Next.js apps (App Router) • Cross-platform mobile apps (React Native) • Fintech/Web3 integrations (Stripe, EexSwap, EexWallet) • APIs, authentication, WebSockets, analytics • Clean code, tests, error handling & i18n 📌 Workflow: 1. Requirement analysis & consultation 2. UI/UX implementation with clean code 3. Development in scalable architecture 4. Weekly updates & proactive feedback 5. Testing, optimization & deployment 🔥 If you need a reliable frontend partner with proven results — click "𝗜𝗻𝘃𝗶𝘁𝗲" on my profile, and let’s build something great. Best regards, Mykola S. Front-End Development React, Front-End Development Next.Js, Front-End Development TypeScript, Front-End Development JavaScript, Front-End Development Tailwind CSS, Front-End Development Chakra UI, Front-End Development MUI, Front-End Development Mantine, Front-End Development Shadcn UI, Front-End Development Ant Design, Front-End Development Bootstrap, Front-End Development Responsive Design, Front-End Development Landing Pages, Front-End Development Dashboards, Front-End Development Admin Panels, Front-End Development SaaS Apps, Front-End Development Fintech Apps, Front-End Development Web3 Apps, Front-End Development Healthcare Apps, Front-End Development Time Tracking Apps, Front-End Development Multilingual Websites, Front-End Development i18next, Front-End Development Accessibility, Front-End Development SEO-Ready Apps, Front-End Development Server-Side Rendering, Front-End Development Static Site Generation, Front-End Development App Router Next.Js, Front-End Development State Management, Front-End Development React Query, Front-End Development Redux Toolkit, Front-End Development Zustand, Front-End Development Context API, Front-End Development Authentication, Front-End Development JWT Auth, Front-End Development NextAuth.Js, Front-End Development API Integration, Front-End Development REST API, Front-End Development GraphQL, Front-End Development Supabase, Front-End Development Firebase, Front-End Development PostgreSQL, Front-End Development MongoDB, Front-End Development Prisma ORM, Front-End Development MySQL, Front-End Development Real-Time Apps, Front-End Development WebSocket, Front-End Development SocketIO, Front-End Development Stripe Integration, Front-End Development Payment Gateway, Front-End Development Subscription Billing, Front-End Development Crypto Wallet, Front-End Development E-Wallet, Front-End Development Blockchain Frontend, Front-End Development Smart Contracts, Front-End Development dApp UI, Front-End Development Fintech Multicurrency, Front-End Development Data Visualization, Front-End Development Recharts, Front-End Development Chart.Js, Front-End Development Analytics Dashboards, Front-End Development Reports System, Front-End Development Jest Testing, Front-End Development Cypress Testing, Front-End Development React Testing Library, Front-End Development Unit Testing, Front-End Development E2E Testing, Front-End Development Error Boundaries, Front-End Development Performance Optimization, Front-End Development Lighthouse Optimization, Front-End Development Lazy Loading, Front-End Development Image Optimization, Front-End Development CDN Integration, Front-End Development AWS EC2, Front-End Development Vercel, Front-End Development Netlify, Front-End Development CI/CD GitHub Actions, Front-End Development Monorepo Nx, Front-End Development Turborepo, Front-End Development Module Federation, Front-End Development Framer Motion, Front-End Development Mobile Apps, Front-End Development React Native, Front-End Development Expo, Front-End Development Tamagui, Front-End Development React Navigation, Front-End Development Cross-Platform Apps, Front-End Development App Store, Front-End Development Google Play, Front-End Development

Hi, I'm Dmytro. I'm a Front End developer with more than 8 years of experience building web and mobile applications for startups, product companies, and growing businesses. As a Front End developer, I've worked on MVPs, SaaS platforms, e-commerce products, internal business tools, and customer-facing applications used by thousands of users. My primary focus as a Front End developer is creating fast, responsive, and user-friendly applications using modern JavaScript technologies. I enjoy transforming complex requirements into clean, maintainable solutions that provide real value to users and businesses. Throughout my career as a Front End developer, I've worked closely with designers, product managers, backend engineers, and business stakeholders to deliver products that are both technically solid and enjoyable to use. I believe a successful Front End developer should understand not only the code but also the goals behind the product. Technologies I work with As a Front End developer, my main stack includes: React Next.js TypeScript JavaScript React Native Angular Vue.js HTML5 CSS3 Tailwind CSS Material UI (MUI) SCSS Webpack Vite Node.js Over the years, I've helped companies hire a reliable Front End developer who can contribute quickly, improve existing codebases, and build new features with confidence. What I can help with As a Front End developer, I can help with: Building modern web applications from scratch Developing scalable React and Next.js applications Creating reusable component libraries Design system implementation Responsive and mobile-first development Performance optimization Server-Side Rendering (SSR) Progressive Web Apps (PWA) API integration Frontend architecture React Native mobile applications Refactoring legacy projects Bug fixing and maintenance Many clients choose me as a Front End developer because I can quickly understand business requirements and translate them into practical solutions. When companies need a Front End developer who can take ownership of a feature from planning to production, I can provide that support. I've worked as a Front End developer on both small startup projects and large-scale applications. My experience as a Front End developer allows me to adapt to different team structures, coding standards, and development processes. Although my primary role is a Front End developer, I also have experience with backend development. This broader perspective helps me become a more effective Front End developer because I understand how frontend systems interact with APIs, databases, and cloud infrastructure. I've worked with: PostgreSQL MongoDB MySQL Firebase Firestore Supabase AWS Node.js Python PHP This experience allows me to work effectively with backend teams and contribute as a Front End developer who understands the complete product lifecycle. How I work I believe a great Front End developer should focus on more than writing code. A Front End developer should understand user experience, accessibility, performance, maintainability, and business objectives. As a Front End developer, I value clear communication, ownership, and attention to detail. Every Front End developer should be able to balance technical excellence with practical business needs, and that's the approach I bring to every project. I've also contributed as a Front End developer in areas such as: Code reviews Technical planning Frontend architecture Git workflows CI/CD pipelines Agile development Team collaboration Mentoring junior developers Whether you need a Front End developer for a short-term project, a Front End developer for long-term collaboration, or a Front End developer to strengthen your current engineering team, I can help. My goal as a Front End developer is to build products that users enjoy using and that businesses can confidently grow over time. Companies often look for a Front End developer who can join an existing team and become productive quickly. Others need a Front End developer to help launch a new product or modernize an existing application. In both cases, I focus on delivering reliable, maintainable, and scalable solutions. If you're looking for a Front End developer with strong React expertise, modern frontend experience, and a practical approach to product development, I'd be happy to discuss your project. Best regards, Dmytro

[Updated: June 25, 2026] I help companies and agencies build and improve WordPress websites - from pixel-perfect Figma-to-WordPress conversions to custom themes and complex WooCommerce setups. Whether you come with a finished design or just a rough idea, I can translate it into clean, lightweight code that's fast, easy to maintain, and built to last after the project ends. With 12+ years in front-end and WordPress development, I have a good eye for design, so I can follow your Figma specs precisely or handle the UI/UX and web design side myself when there's no designer involved. I work remotely with clients and agencies worldwide - you get clear communication, reliable deadlines, and a custom WordPress site you can actually manage yourself. A few ways I help: - Agencies & studios - reliable Figma-to-WordPress builds, white-label, no hand-holding - SaaS & startups - fast, conversion-focused marketing sites and landing pages - Founders & brands - design-led custom WordPress websites that match your vision exactly What I work with: - WordPress development - custom themes, theme & plugin customization, Gutenberg, ACF - Page speed & performance optimization, Core Web Vitals, responsive design - Elementor when a project calls for it - WooCommerce - custom checkout flows, multilingual / multi-currency setups - Front-end - HTML, CSS, JavaScript, SCSS, Flexbox/Grid - Animations & micro-interactions (CSS + JS, GSAP) - Figma-to-WordPress implementation, pixel-perfect or design-adaptive - UI/UX and web design when no designer is involved - Git and modern dev workflows

I don't build websites that "should" be fast. I build ones that are, and I can show you the numbers. Most developers ship something that looks fine in a demo and then falls apart under real traffic and real content. That's the gap I get paid to close. Seven years in Front End Developer, React, Next.js, and React Native, 100% Job Success Score, covering frontend, backend, and integrations end to end so you're not stuck coordinating between three different specialists for one project. Recent proof: an e-commerce rebuild went from 3.5s to 1.6s load time, every Core Web Vital green, bounce rate dropped immediately. A multilingual platform across four languages had SSR and indexing issues fixed, organic traffic grew within six weeks of launch. - React - Next.js - TypeScript - Tailwind - React Native - Supabase - SSR, SSG - technical SEO - Core Web Vitals - Payment and CMS integrations all handled in-house. If your current site is slow, or your next one needs to not be, that's exactly what I do.

My clients emphasized my ability to quickly dive into projects and deliver results aligned with requirements and acceptance criteria within the required timeframe. Greetings! I am a Senior front-end developer with a proven track record in React.js, Angular, JavaScript, HTML, and CSS. Finished 39+ projects. 5500+ happy hours, full of challenging tasks, crucial moments, and fun. From an idea to the final launch, I've got you covered. Please feel free to write to me before the project. ⭐⭐⭐⭐⭐ "Vitalii is a person to cooperate with for those who care about their time, money, quality of work, deadlines, and want to avoid hustling. I was impressed by his ability to dive into the context of tasks, finding the right approach for a particular task, asking the right questions, and providing updates on a daily basis. Everything went smooth from the very first message to the final result. We were able to rump up the developing process, improve the code base without the need for big rewrites, and all within just a week with Vitalii's help. His architecture skills and experience have helped us to find the right way for developing the last milestone which was quite tricky and complicated." - Daniel Turczański, Entrepreneur, JQL Search Extensions. Upd: 25.07.25 Why you should choose me over other front-end developers: 🏅 Top Rated Plus Front-End Developer - ONLY 3% on Upwork 🎯 All projects have successfully finished with five-star feedback ✅ Certificates from Microsoft and Udemy ⚡ Immediate answers to any contract/invite in less than three hours ⌚ Available for RUSH projects and calls You will get more than just a front-end developer: - Top-notch experience in Front-end development (React, Angular, JavaScript, Typescript, HTML, CSS) - Proven soft and hard skills - Ability to quickly dive into the project and deliver results within a minimum time frame - 24/7 availability for communication and support - Hustle-free environment for your ideas - An individual deeply committed to your success and adding value to your enterprise --- Keywords: Front End Developer, Front End Development, Front End, React, React.js, TypeScript, JavaScript, JS, Redux, Redux Toolkit, React Hook Form, React Query, React Table, React Router, React Bootstrap, Material UI, MUI, Angular, Angular.js, Angular 8, Angular 9, Angular 10, Angular 11, Angular 12, Angular Material, Ng Bootstrap, NgRx, RxJS, Ng cli, Nx cli, Next.js, SSR, SSG, SWR, App Router, Pages Router, Tailwind CSS, Tailwind, Radix UI, Shadecn UI, Styled Components, CSS Modules, HTML, HTML5, CSS, CSS3, Twitter Bootstrap, Bootstrap, Sass, Less, Scss, Webpack, Vite, Vite.js, Vercel, Cloudflare Pages, API, REST, Graphql, Jira, Asana, Shortcut, GitHub, BitBucket, GitLab, Figma, Zeplin, Adobe XD, Landing Page, SaaS, MVP, PoC, Startup, Product, Enterprise.