I'm a seasoned full-stack developer specializing in JavaScript/NodeJS technologies 𝘄𝗶𝘁𝗵 𝗼𝘃𝗲𝗿 𝟕+ 𝗬𝗲𝗮𝗿𝘀 𝗼𝗳 𝗲𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 𝗶𝗻 𝗠𝗘𝗥𝗡 (MongoDB, ExpressJS, ReactJS, and NodeJS) stack application development. 𝗪𝗲𝗯 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 𝗙𝗿𝗼𝗻𝘁𝗲𝗻𝗱: ✅ ReactJS Redux ✅ React Native ✅ Three.Js ✅ JavaScript, TypeScript ✅ MVP ✅ HTML, CSS, Bootstrap, Tailwind CSS, and Material-UI ✅ UI Design using Figma ✅ NextJS ✅ Proficient in working with REST APIs ✅ OAuth ✅ Unit testing(Jest, React testing library) ✅ Integration testing(Selenium) 𝗕𝗹𝗼𝗰𝗸𝗰𝗵𝗮𝗶𝗻 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲: ✅ Web3.js and Ethers.js for Blockchain Interaction ✅ Solana Development (Anchor Framework, Solana Wallet Integration) ✅ Ethereum Development (Smart Contracts using Solidity, OpenZeppelin) ✅ NFT Marketplaces (Minting, Trading, Metadata Integration) ✅ Token Standards (ERC-20, ERC-721, SPL Tokens) ✅ Truffle, Hardhat, and Ganache for Development & Testing ✅ Decentralized Storage (IPFS, Filecoin) ✅ Wallet Integration (Metamask, Phantom) ✅ Cross-Chain Solutions and Bridging 𝗕𝗮𝗰𝗸𝗲𝗻𝗱: ✅ Node.js, Express.js ✅ Ruby on Rails ✅ AWS ✅ MySQL ✅ Elasticsearch ✅ Firebase ✅ MongoDB ✅ CI/CD ✅ Unit testing(Jest, React testing library) 𝗪𝗵𝘆 𝗖𝗵𝗼𝗼𝘀𝗲 𝗠𝗲? ✅ Uncompromising Quality + Client Satisfaction ✅ Competitive Pricing ✅ Focus on Security ✅ Comprehensive Post-Order Support ✅ A Trustworthy Permanent Developer Still have questions or specific requirements? If none of the available packages suit your needs, don't hesitate to reach out via inbox. Thank you,

Technical Skills Frontend Development Languages & Frameworks: HTML5, CSS3, JavaScript (ES6+), TypeScript. Trading/Forex: MT4, MT5, Stock api's, exchange api's , charts and stock/exchange tables. Libraries & Frameworks: Framer motion | Strapi Sanity | No code bubble | Wix ReactJS, Redux, NextJS, and Remix.js. Apollo Client for GraphQL integration. State Management: Redux, Context API, URQL. Component Libraries: Tailwind, Material-UI, shadcn UI, Daisy-UI, Bootstrap. UI/UX Design: Responsive and mobile-first design principles. Client-side routing with React Router. Frontend performance optimization. GraphQL: Schema design, resolvers, queries, mutations, and subscriptions. Optimizing GraphQL queries for performance. Frontend integration with Apollo Client. Real-Time Communication (WebRTC): Video/audio chat applications using WebRTC API. Signaling protocols (WebSocket) for peer-to-peer connections. STUN/TURN server configuration for NAT traversal. Handling real-time data streams. Backend Development Languages: Node.js, Python, GoLang. Frameworks & Libraries: Node.js/Express.js, Apollo Server. RESTful and GraphQL API design & integration. Authentication & Authorization: JWT, Passport.js, OAuth. Firebase Rest API, Realtime DB, Cloud Fire store, Firebase Authentication. Middleware development for request handling and validation in Express. Blockchain Development: Smart contracts and decentralized applications (DApps) on Ethereum and other EVM-compatible networks. Proficiency in Solidity, Web3.js, Ethers.js, and Third web. Token Standards: ERC-20, ERC-721, ERC-1155. Decentralized storage solutions (IPFS). Familiarity with DeFi protocols and blockchain interoperability. Development tools: Truffle, Hardhat. Payment Gateway Integration: Integration of payment systems like Stripe, PayPal, Braintree. Secure API handling for transactions, subscription systems, refunds, and disputes. PCI compliance and secure processing practices. Databases Relational & NoSQL: Experienced with MongoDB, SQLite, MySQL, PostgreSQL. Proficient with ORMs like Prisma, Type ORM, Mikro-ORM. Key-value databases like Redis. Data modelling, querying, indexing, and server-side caching strategies in MongoDB. Testing & Debugging Test-Driven Development (TDD): Proficient in Jest, Mocha, Chai for unit, behavior, and end-to-end (E2E) testing. Experienced with React Testing Library for frontend component testing. Extensive debugging using tools like Postman for API tests. DevOps & Deployment Cloud & CI/CD: Deploying applications with Docker, Heroku, Vercel, AWS, Google Cloud, Azure. Building CI/CD pipelines for automated testing and deployment. Infrastructure as Code (IaC) with Terraform. Monitoring & Logging: Implementing solutions such as Prometheus, ELK stack. Blockchain Development & Decentralized Applications (DApps) Smart Contract development on Ethereum, using Solidity. Blockchain integration into applications with Web3.js or Ethers.js. Familiar with decentralized finance (DeFi) protocols and blockchain consensus mechanisms. Token creation standards: ERC-20, ERC-721, and ERC-1155. DAPP development tools like Truffle and Hardhat. Experience with decentralized storage solutions such as IPFS. Additional Skills Proficient in managing Docker containers, cloud deployment via Heroku and Vercel. Experience working with headless CMS solutions like Sanity.io and Strapi. Comfortable using version control tools like Git, GitHub, and GitLab. Knowledgeable in Python and Solidity with familiarity in ML libraries such as TensorFlow and SciKit-Learn for machine learning integrated applications. Collaboration Capabilities I can collaborate with you on: Transforming Business Ideas: Develop scalable, efficient, and user-friendly web applications tailored to your business. Enhancing Existing Applications: Add innovative features to your apps that resonate with users. Optimization & Bug Fixing: Improve the performance and stability of your apps by rectifying bugs and optimizing the code. UI/UX Design: Design intuitive and engaging user interfaces and user experiences. Testing & Reliability: Integrate unit testing to improve resilience and reliability of your applications. Blockchain Features: Incorporate blockchain functionalities like smart contracts, token creation, and DApps. Machine Learning Integration: Leverage TensorFlow and SciKit to integrate machine learning models into your applications.

Working as a freelancer for almost a decade, launched multitude of products and services. Looking for next challenge, may it be web or desktop development. Specialized solutions for research oriented tasks. Mobile applications or mini-games. I will strive my utmost to produced the desired results.

Hi! I’m a Senior Full-Stack Engineer and Fractional CTO with over 10 years of experience building and scaling web applications, leading teams, and delivering high-quality software. I’ve worked across startups and established companies, building production systems end-to-end, from architecture to clean and reliable code. Since I’m new on Upwork, I’m offering discounted rates for my first clients. You get senior engineering quality at an accessible rate while I build my Upwork profile. What I can help you with: • Full-Stack Development – TypeScript – React / Next.js – Node.js – Serverless applications – API design and development • Backend Engineering – Authentication and permissions – Payments and billing systems – Microservices – Real-time features (WebSockets) – Database design and optimization • Cloud / DevOps – AWS (Lambda, S3, EC2, RDS, CloudFront) – CI/CD pipelines – Infrastructure as code – Monitoring and logging setups • CTO & Architecture Consulting – Product and technical roadmaps – System design and architecture – Code reviews and audits – Security best practices Why clients choose me: • Reliable, predictable delivery • Clear, consistent communication • Clean, scalable, well-structured code • Product thinking, not just coding • Calm, professional, and easy to work with Special offer for my first Upwork clients: A free 10-minute code or architecture review so you can see my approach before making a decision. Feel free to message me. I respond quickly.

I lead end-to-end Unity development for 2D and 3D games and software, shipping 10+ titles on Android and iOS, with full ownership of UI/UX, architecture, monetization, and Live Ops, from prototype to long-term production support. ✅ I have provided game development services to - Teams and Game Studios requiring a prototype, an MVP, a production-ready game. - Communities seeking to captivate their audience through a video game - Individuals wanting to test out concepts and designs - Individuals seeking to test ideas on the market (Android/IOS) ✅ Developing games in the following genres - 2D Physics based Shooters, Physics based Puzzles - 2D board games, Word Games - 2.5D Rogue-Like - 3D Runners, 3D Car Racing, TPS - Casual, Hyper Casual, Idle, Clickers - Real Time Multiplayers - Metaverse, NFT-Enhanced ✅ With technologies such as: - Unity3D, C#, Visual Studio, Android Studio, xCode, Libgdx, Java - Microsoft Azure Playfab, Azure Functions, Photonengine - Firebase Analytics GA4, Unity Analytics, DevToDev Analytics, Firebase Messaging, Facebook SDK - AWS: Lambda, API Gateway, IAM, EC2, Secrets Manager, Amazon Redshift, Unity3D AWS SDK - Kochava, Applovin Max Mediation, Applovin, Unity Ads, Admob, In-game world ads - ERC-20 Smart Contract Integration, Chainsafe, Moralis - Figma, Notion, Jira, Trello - Git, Source Tree, Plastic SCM - Unity: Cinemachine, Native UI, Character Controllers, A* Pathfinding, tweens, mesh deformers, Fbx/Obj handling, and many other assets from the Unity Asset Store ✅ Common Responsibilities - Lead game engine development, ensuring robust and functional gameplay foundations. - Transform customer requirements into efficient, maintainable code. - Oversee key game features, coordinating with team members for timely delivery. - Manage project timelines and milestones, demonstrating strong organizational skills. - Direct performance optimization across various devices to enhance user experience. - Contribute creatively to game design and audio elements. - Innovate with gameplay prototypes and feature development. - Document processes and uphold high-quality production standards. - Develop animation state machines for characters, objects, and environments. - Independently manage tasks, ensuring efficiency and effectiveness. ✅ AGILE GAME DEVELOPMENT As an experienced Unity developer, I possess the expertise necessary to deliver high-quality products with efficiency, awareness and leadership. I am equipped to handle both large-scale Unity projects and smaller prototypes, adeptly adapting to meet the specific needs and requirements of each project. ✅ MOBILE APP INDUSTRY As a Unity3D specialist with a strong focus on mobile development, I bring a wealth of expertise and a deep understanding of the nuances and demands of mobile platforms. I bring a comprehensive skill set encompassing performance optimization, KPI-Driven-Development, Effective ad systems, ad mediation setups, A/B/C testing and many other mobile-specific technicalities faced when uploading apps to both Google Play and the App Store. Significant courses: Assembly Language, Theory Of Computation, Design and Analysis of Algorithms, Automata Theory, Machine Learning, Computer Vision, Software Engineering, Discrete Math, Numerical Analysis, Calculus, Linear Algebra

Your support team answers the same questions every day, and a generic bot only makes it worse. I fix that as an AI Chatbot Developer, AI Engineer, and System Architect: a chatbot built on your real data with Agentic RAG and AI LLM orchestration, engineered in Python, gives accurate, source-cited answers 24/7, with no human intervention. That is the difference between a real chatbot and a demo, and it is what an AI Engineer designs every Python system to deliver. Top Rated AI Chatbot Developer and AI Engineer on Upwork · 50+ AI Chatbot systems in Python · 10+ years software engineering · 100% Job Success · $100K+ earned across healthcare, finance, SaaS, and real estate. The principle behind every build: a chatbot that isn't grounded in your knowledge base is just a science project. So as an AI Engineer and System Architect, I ground each chatbot in your actual documents and databases with Python, and I tune the Agentic RAG layer in Python until the AI LLM answers from your data, not from guesswork. Deep AI LLM tuning is where an AI Engineer earns the result. What I build: Agentic RAG chatbots context-aware chatbot answers drawn from your own documents over Pinecone, Qdrant, or Chroma, on Claude, GPT-4, or Llama 3, wired together in Python. Sources cited, no hallucinations, every AI LLM answer grounded in your data by an AI Engineer. AI LLM-powered workflows Python with LangChain and LlamaIndex that read documents, extract insights, and automate multi-step work end to end, with AI LLM retries and exception handling in Python. Engineered by an AI Engineer and architected by a System Architect, with the chatbot layer sitting on a scalable Python core. GenAI & NLP apps a text, voice, and image chatbot with full conversation state and multi-platform deployment, shipped end to end in Python by a System Architect. Healthcare & telehealth HIPAA-compliant Agentic RAG chatbot pipelines with strict data grounding and audit trails, built in Python by an AI Engineer and System Architect with real healthcare experience. Rapid MVPs a working chatbot in weeks, not months, delivered as clean, documented Python your team can own as a maintainable Python asset. That is how an AI Engineer builds a Python chatbot to hand off. Results: support costs cut 35-55% with an Agentic RAG chatbot · 100+ hours/month recovered through AI LLM automation in Python · up to 60% revenue lift from smarter chatbot engagement. These are the numbers an AI Engineer and System Architect are hired to move. How I work: Discovery, then Agentic RAG and AI LLM architecture in Python, then a fast MVP, then scaling for accuracy, speed, and multi-platform deployment. Because I work across every major AI LLM and open-source AI LLM provider through Python, I'll tell you honestly whether Claude, GPT-4, or open-source fits your accuracy, cost, and privacy needs before you commit. What separates a real System Architect from an API-wrapper is designing each chatbot for real data, real edge cases, and real production load in Python, the standard an AI Engineer is held to across every AI LLM I deploy. Scalability and infrastructure: a chatbot that's fast in a demo and slow under load is a failure, so as a System Architect I design the data flow, caching, and failover in Python that keep your chatbot fast at scale. An AI Engineer plans the Python system before a line of code ships, and a System Architect owns the trade-offs between cost, latency, and accuracy. That architecture-first discipline is what a System Architect brings that an integrator cannot. Tech stack: Python · Claude · GPT-4 · Llama 3 · LangChain · LlamaIndex · AutoGPT · Autogen · Pinecone · Qdrant · Chroma · Node.js · Django · TensorFlow · Docker · AWS · Azure, the Python toolkit an AI Engineer ships with. Want a chatbot or Python product that's measurable, not a science project? Message an AI Engineer and System Architect who has shipped 50+ Python chatbot systems. As your dedicated AI Chatbot Developer, AI Engineer, and System Architect, I offer a free 30-minute consultation to map your Agentic RAG and AI LLM roadmap in Python before you spend a dollar on your build, scoped by a System Architect. Bring your use case and a System Architect who grounds every chatbot in real data and clean Python will scope it properly. That is the commitment a System Architect stands behind, and the reason a grounded chatbot earns the contract.

I build end-to-end automation systems that turn complex, multi-step business processes into reliable, self-running workflows — so you can scale without scaling headcount. With hands-on experience across AI orchestration, no-code/low-code platforms, and custom scripting, I've shipped production systems that handle content generation, demand intelligence, affiliate monetization, trading bot deployment, and financial process automation — all running autonomously on VPS infrastructure. What I Build: • AI-Powered Pipelines — LLM-driven workflows using OpenAI, Claude, Gemini, and OpenRouter, orchestrated through n8n and MAKE, with intelligent routing, multi-platform signal aggregation, and automated publishing to WordPress • No-Code / Low-Code Architecture — complex multi-lane schedulers and data pipelines built in n8n, MAKE, and Xano; structured databases and relational views in Airtable; frontend apps and client portals in WeWeb • API Integrations — HackerNews, Google Trends, Brave Search, SerpAPI, DataForSEO, Polymarket, Hyperliquid, WordPress REST API, and custom MCP server connections • Trading Bot Systems — strategy automation on Hyperliquid and Polymarket, Darvas Box + Freqtrade adapters, dry-run validation, VPS deployment, and operator-grade monitoring • Accounting Process Automation — automating reconciliation, reporting, and financial data flows with audit-ready output • Affiliate & Monetization Automation — opportunity scouting, link health monitoring, application engines, and revenue tracking pipelines • Demand Intelligence & SEO — multi-platform trend scanning, SERP domination engines, automated content briefs, and GEO optimization at scale Tech Stack: n8n · MAKE · Airtable · WeWeb · Xano · Python · PowerShell · WordPress REST API · Gemini / Claude / OpenRouter · Google Trends · SerpAPI · DataForSEO · Hyperliquid · Polymarket · VPS (Linux) · MCPs · Brave Search API · Freqtrade I bring both the engineering depth to build reliable systems and the product thinking to make sure they solve the right problem. If you need automation that actually runs in production — not just a proof of concept — let's talk.

I don't just write React Native code. I ship apps people actually use. 1M+ downloads. 30+ countries. 200+ projects. 100% Job Success. Most clients come to me when their React Native app is stuck, broken, or half-built and nobody else could finish it. Or when they need a mobile app developer who handles everything from first screen to App Store and Google Play launch. Some come with an MVP idea and need a react native developer who moves fast without cutting corners. Others come because their react native mobile app has performance issues or complex integrations nobody else could solve. I've been doing this for 8+ years, delivered 200+ projects, and the apps I've built as a mobile app developer now serve 590K+ users across 30+ countries. WHAT I BUILD As a react native developer and react native engineer I cover the full mobile lifecycle across 200+ shipped products: ✦ React Native mobile apps with Expo and CLI for iOS and Android ✦ React Native Expo MVPs shipped from first screen to App Store and Google Play ✦ React Native Firebase integrations — auth, Firestore, real-time sync, push notifications ✦ React Native Supabase backends and React Native Node.js APIs that scale with the product ✦ AI mobile app development with OpenAI API, real-time features, and on-device intelligence ✦ In-app purchases, RevenueCat subscriptions, AdMob, deep linking, and push notifications ✦ Native Swift and Kotlin modules and android kotlin integrations when cross-platform isn't enough ✦ App Store and Google Play submissions including rejections, TestFlight, and review handling I work as a react native full stack developer so clients don't need to hire two separate people. Firebase, Supabase, and Node.js on the backend — one team, one codebase, one point of contact. INDUSTRIES I've shipped products as a mobile app developer and mobile application developer across multiple verticals. In Fintech and Crypto I built a trading platform with 590K+ registered users and 2M+ monthly visitors. In Healthcare and Wellness I delivered apps with 100K+ downloads, a 4.9 App Store rating, and users across 30+ countries. In EdTech I shipped language learning and trivia apps that together reached 1M+ downloads. I've also delivered E-commerce, SaaS MVPs, Hospitality, and On-demand platforms: ✦ Fintech and Crypto — 590K+ users, 2M+ monthly visitors ✦ Healthcare and Wellness — 100K+ downloads, 4.9 App Store rating, 30+ countries ✦ EdTech — 1M+ downloads across 30+ countries ✦ E-commerce and Marketplace ✦ SaaS and Startup MVPs ✦ Hospitality and On-demand Services WEB AND FULL STACK On the web side I work as a react developer and front end developer building platforms with React, Next.js, and Node.js. I've delivered react nextjs products, full stack developer react node systems, and full stack developer ai projects with LLM integrations and OpenAI workflows. I've worked alongside Vue and Angular codebases and helped clients migrate from WordPress to modern React stacks. On larger projects I work as a web developer delivering both mobile and web from the same team. Clients who need an app developer ios android with full backend ownership also work with me on ios android developer projects. I collaborate with flutter developer and android developer teams when needed, and I structure codebases that a python developer or backend node.js team can extend later. WHY CLIENTS WORK WITH ME ✦ 8+ years as a react native developer and mobile app developer — 200+ projects, 1M+ downloads, 30+ countries ✦ React native full stack developer — mobile frontend and backend in one engagement ✦ Fast at complex bugs, App Store rejections, and performance issues others couldn't fix ✦ Clear written communication and honest timelines, no surprises ✦ Available after launch for support, new features, and scaling WHAT CLIENTS SAY "Michael is an outstanding react native developer — skilled, reliable, and delivers clean, efficient code." "Succeeded on complex React Native bugs where others failed." "Exceeded our expectations." If you're looking for an experienced react native developer and mobile app developer who gets things shipped — press Invite or send a message.

- 15+ years experience in game development, specialized in web and NFT games - developed for multiple platforms (web, android, ios) - 5 years with Funtomic, one of leading kid games company

I am a blockchain developer with over 6 years of experience delivering high-performance trading systems, smart contracts, and decentralized applications across Ethereum and Solana. My expertise encompasses DeFi protocol development, automated trading infrastructure, and large-scale NFT pipelines. I have successfully built production-grade systems for leading platforms, ensuring scalability and efficiency. My technical skills in Solidity and Hardhat enable me to tackle complex challenges and deliver exceptional results. If you need a reliable partner to innovate in the blockchain space or enhance your existing projects, I am here to help. Let's discuss how I can contribute to your vision and drive your success.