Valerii Fomenko Crypto Exchange | SaaS | Marketplace | Full stack developer | Node.js

Why should you work with me ?

Hi all! Welcome to my profile! I’m a Full Stack Developer with over a decade of experience specializing in building web applications, mobile apps, SaaS platforms, crypto exchange platforms, and scalable software solutions. My focus is on delivering high-quality, future-proof, and bug-free products that drive business growth. Here’s what you can expect when working with me: ✅ I develop crypto exchange platforms with advanced security, blockchain integration, custom API development, wallet integration, and real-time trading features. My experience includes working with Ethereum, Solana, Binance Smart Chain, and developing solutions with smart contracts, blockchain architecture, and Web3 integration. ✅ I build web applications using modern frameworks like React.js, Vue.js, Next.js, Node.js, Laravel, and Nest.js, ensuring each product is responsive, scalable, and optimized for performance. ✅ For mobile app development, I use React Native, Flutter, and native iOS and Android frameworks to create smooth, fast, and intuitive apps with features like push notifications, map integrations, in-app purchases, and custom API development. ✅ I design and develop SaaS platforms that are scalable, robust, and feature seamless API integrations, real-time analytics, and intuitive dashboards. ✅ In eCommerce development, I focus on creating platforms with secure user authentication, integrated payment systems, and responsive, mobile-friendly designs. ✅ I also build custom dashboards and CRMs with advanced data visualization using Chart.js and D3.js, ensuring intuitive and powerful interfaces that support data-driven decision-making. ✅ For cloud deployments, I work with AWS, Firebase, and Google Cloud Platform, setting up scalable and secure environments to support product growth and performance. Tech Stack 📍 Frontend: React.js, Next.js, Vue.js, Redux, HTML5, CSS3, Tailwind CSS, SCSS, jQuery 📍 Backend: Node.js (Express.js, Nest.js), PHP (Laravel, Yii2), REST APIs, GraphQL, Prisma, MySQL, 📍 PostgreSQL, MongoDB, Redis 📍 Blockchain Development: Ethereum, Solana, Binance Smart Chain, Web3.js, Ethers.js, Solidity, 📍 Smart Contracts, Wallet Integrations, API Development 📍 Mobile Development: React Native, Flutter, Android, iOS, Firebase, Push Notifications, Map Integration, In-App Purchases 📍 DevOps & Cloud: Docker, Heroku, GitLab, GitHub, AWS Amplify, Google Cloud Platform 📍 API Development & Integration: REST API, GraphQL, Stripe, PayPal, Firebase Authentication Why work with me? As a CTO since 2016, I’ve led and scaled complex tech projects across fintech, blockchain, eCommerce, healthcare, and beyond. I bring not just strong engineering, but strong product thinking and clear communication. If you're looking for a developer who can build secure crypto exchange platforms, cutting-edge web apps, SaaS solutions, or user-friendly mobile applications, let’s connect 🎯