I am a highly skilled and motivated full stack developer with expertise in building robust cross-platform applications. With over 3 years of experience, I have successfully delivered web and mobile solutions that leverage cutting-edge technologies like AI, CI/CD pipelines, microservices and blockchain.

Usually for the:

• 📲 Frontend: React, Next.js (SSR, SSG, CSR), React Native, Expo, TypeScript, TailwindCSS, Zustand.
• 🖥️ Backend: Django, FastAPI, Node.js (Express/Nest), Prisma, microservices architecture.
• 🗄️ Databases: PostgreSQL, MySQL, MongoDB, Redis.
• 💎 Blockchain & Multichain: Ethereum, Binance Smart Chain, Polygon, and Solana
• 🧠 AI/ML: TensorFlow, PyTorch, Hugging Face, Scikit-learn.
• 🛠️ Others: CI/CD pipelines (GitHub Actions, GitLab CI), Docker, WebSockets, RabbitMQ, Celery, Sentry, Nginx, Apache, Redis, Openzepelin, Hardhat, Chainlink...

During my career, I have worked with several partners including:
@madoumadev for web and mobile cross-platform;
@Daltonic for Web3 (blockchain)

• Develop advanced native iOS and Android applications using React Native, Expo, and modern SDKs.
• Integrate AI-powered functionalities (e.g., recommendations, predictive analysis).
• Ensure performance, responsiveness, and quality through rigorous testing and debugging.
• Implement payment systems with Stripe and authentication using Clerk.
• Build client-server interactions (REST, WebSockets) and custom native components using Objective-C, Swift, Java, and Kotlin.
• Publish mobile apps on app stores with experience in CocoaPods and Gradle.
• Use native components (Photos & Videos, Gallery, Sharing, Contacts, Push Notifications, Deep Linking, Geolocation, etc.), React Navigation, Reanimated (animations), and Cloudinary (for image and video optimization) and custom native components using Objective-C, Swift, Java, and Kotlin..
• Experience with Git version control system (cherry-pick, merge, stash).

• Knowledge of web application performance optimization methods.
• Work with the MERN stack (MongoDB, Node.JS (Express), React, Node.js).
• Experience in frontend-backend integration.
• Experience with external API integrations.
• Understanding of responsive layout principles and cross-browser compatibility.
• Ability to read, analyze, and maintain others' code.
• Write high-quality code and interact with databases and queues.
• Deployed applications in containerized environments using Docker and Kubernetes, ensuring scalability and reliability

• Smart Contracts: Development and deployment of secure smart contracts using Solidity, Truffle, and Hardhat.
• DeFi Protocols: Expertise in staking, yield farming, liquidity pools, and lending/borrowing platforms.
• Multichain Integration: Implementations on Ethereum, Binance Smart Chain, Polygon, and Solana, with seamless cross-chain transactions using bridges.
• NFT Development: Creation and management of NFTs with IPFS and Pinata for decentralized storage.
• Oracles: Integration with Chainlink for reliable and real-time price feeds.
• Gas Optimization: Minimization of transaction costs through smart contract optimizations.
• Payment Systems: Implementation of hybrid payment gateways combining fiat and crypto.
• DEX Platforms: Development of decentralized exchanges (DEX) supporting token swaps and multi-token compatibility.

I'm full stack developer, and:

• 🌍 Expertise in developing robust and high-performance Web and Mobile applications, capable of handling up to 1M+ users.
• 🔗 Blockchain & DeFi Expertise: Development of staking platforms, NFT marketplaces, and DeFi protocols (yield farming, liquidity pools).
• ⛓ Multichain Proficiency: Seamless integrations across Ethereum, BSC, Polygon, and Solana
• 🧠 Smooth integration of advanced features, including AI and microservices.
• 🗣️ Multilingual: English, Russian, French.
• 💼 Domain Expertise: Finance 🏦, Food 🍔, E-commerce 🛍️, Health 💪, Social Media 💬, Music 🎵, DApp, and more.

This project Wallet Web-app is a full-stack project (Reactjs-Django), I implemented it in the company where I worked. Because of the contract I had signed in this company, I am only able to present the frontend to you. If people are interested in knowing how its backend works and the updates that have been made, they can contact me privately because I am the one who implemented it from scratch until its deployment. There are other full-stack projects that you can find in my public projects and you can use them as you see fit, and other projects are private, so I keep that. I am open for anyone who wants to know more.

Concerning the native mobile projects (IOS and Android) that I had implemented, you can download them on your local machine using the guide that is found in each of these projects in the README.md file. Here are the links to these projects:

• RUSSEND Send money to Africa with ease
• RUSSEND Send money to Africa with ease
• Food_Ordering App 🍲 - A complete food ordering system.
• FinTech Clone 🚀
• Apple Wallet Clone 💹 - A replica of the Apple Wallet app.
• Vision Camera 🎥 - An advanced camera application.
• Food Ordering Application 🍔📲

Among these projects below, other projects I built alone and others I had participated in. Use VPN if it does not load

• NFTs Collections
• Web 3.0 boom by building decentralized applications
• Solana Voting Dapp
• Solana Token & Pool Info CLI
• Voting_DApp_Ethereum
• Solana Voting Dapp

• Crypto Exchange - Python-based crypto trading system.
• Fusion-Brain - Node.js application using microservices.
• Full Auth - Python authentication system.
• Real Estate App - Backend for real estate listings.

• Google Mobile Web Specialist Certification.
• Advanced React Development - Udemy.
• Django Rest Framework Mastery - Coursera.
• DeFi Development Mastery - Dapp University.
• Certified Blockchain Developer (CBD) - ConsenSys
• Blockchain Developer - Coursera.

TaskManager is a task management application designed to simplify personal and professional organization. Discover its features:

• ✅ Intuitive organization of tasks by priority.
• ✅ Real-time collaboration with your colleagues.
• ✅ Visualization of performance with graphs.

Your support will allow us to:

• Fund hosting and maintenance.
• Add new features, such as integration with Google Calendar.
• Guarantee reliable and up-to-date software.

• 100€/month: Hosting.
• 250€/month: Advanced features.
• 500€/month: Acceleration of updates.

Support TaskManager on Open Collective

For any questions, contact us at: tatyoko28@gmail.com