✅ 🏆 𝗧𝗢𝗣 𝗥𝗔𝗧𝗘𝗗 𝗣𝗟𝗨𝗦 🏆 as per Upwork (𝗧𝗼𝗽 𝟯%) ✅ 15+ Years Experience in Mobile Apps Development ✅ 100% Customer Satisfaction ✅ 100% Job Success Rate ✅ More than 12,000 Hours Completed Meet Vikramjeet Singh, a skilled Mobile App developer with a rich background of 15+ years in the field. I've not only crafted a diverse array of applications but consistently provided gratifying solutions to my clients. Whether you're a 𝗟𝗲𝗮𝗱𝗶𝗻𝗴 𝗦𝘁𝗮𝗿𝘁𝘂𝗽, 𝗘𝘀𝘁𝗮𝗯𝗹𝗶𝘀𝗵𝗲𝗱 𝗕𝘂𝘀𝗶𝗻𝗲𝘀𝘀 or 𝗘𝘅𝗽𝗹𝗼𝗿𝗶𝗻𝗴 𝗠𝗩𝗣, you can expect 𝗛𝗶𝗴𝗵-𝗤𝘂𝗮𝗹𝗶𝘁𝘆 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀 at an 𝗔𝗳𝗳𝗼𝗿𝗱𝗮𝗯𝗹𝗲 𝗖𝗼𝘀𝘁. Interested? Click the '𝗜𝗻𝘃𝗶𝘁𝗲' button initiate a conversation about your project and aspirations. 💻 Here are the technologies I work with for development: 𝗶𝗢𝗦: Swift, Objective-C, SwiftUI 𝗔𝗻𝗱𝗿𝗼𝗶𝗱: Kotlin, Java 𝗖𝗿𝗼𝘀𝘀-𝗽𝗹𝗮𝘁𝗳𝗼𝗿𝗺 (𝗛𝘆𝗯𝗿𝗶𝗱): Flutter (Dart), React Native Tv: Android TV, Fire TV, Roku TV, Apple TV 🤗 What sets me apart for your consideration? 🔹 Strong native and cross platform apps, backend and database knowledge 🔹 Giving good suggestions to the clients is always helpful for creating a better app for them. 🔹 Consistently keeping abreast of the latest in technology trends. 🔹 Developing apps that seamlessly support a diverse range of devices. 🔹 Quality work at affordable prices 🔹 Delivering product on/before time 🧑🏻‍💻 Here are the key skills and experiences that form the core of my expertise: 👉 Firebase - Firestore, Realtime Database, Cloud Messaging, In-App Messaging, Analytics, Crashlytics, Admob, 👉 Interaction with backend - Rest API, Soap, And web sockets, third-party libraries. 👉 Version Control Tools - Github, Bitbucket, Gitlab, AWS 👉 Project Management: Slack, Basecamp, Jira, Trello 👉 Databases / Data Management - SQLite, MySQL, MongoDB, Realm 👉 Social Integration and authentication 👉 Chat - Firebase, Socket, Xmpp, Twilio, Agora 👉 Maps & Location - Mapbox, Google Maps, Apple Map kit, Geolocation, GPS, Geo fence 👉 Broadcast & Livestream - Agora, Twillio, Filters. 👉 Payments - Paypal, Stripe, Razorpay, Braintree 👉 Scan - Document, QR Codes, Bar Codes, NFC Tags Reading 👉 Subscription & Purchases - In-app purchases, Advertisements, Push Notifications, GCM, 👉 Crash Analytics - Google Analytics, Firebase Crash analycs 👉 Internet Of Things (IoT), Beacon, Bluetooth 👉 Tools: Xcode, Android Studio, Visual Studio Code 👉 App Store Certificate generation, TestFlight and Daiwi for build sharing. 🌟 Here's what a last of my clients have shared about their experience with my work: 🗣️ "Vikramjeet was clear when discussing migrating app source code from Base44 to Apple and Google play store as an app. He explained technical terms and answered questions. I plan to work with Vikramjeet to develop an app." 🗣️ "Working with Vikram has been an excellent experience. He is a skilled iOS developer who combines strong technical knowledge with a professional and reliable approach. Communication was always clear, and he consistently showed dedication and flexibility throughout the project. Vikram is dependable, easy to collaborate with, and delivers quality work. We would be glad to work with him again and recommend him to anyone in need of an experienced iOS developer." 🗣️ "Vikramjeet was an excellent developer and a true professional. His technical skills, dedication, and proactive problem-solving made a significant impact on our projects. Working with Vikramjeet was a pleasure, and I would not hesitate to collaborate with him again in the future" 🗣️ Great working with Vikram! Five stars! ⭐️⭐️⭐️⭐️⭐️ 🗣️ Great work!🌟 📞 𝗕𝗢𝗢𝗞 𝗔 𝗖𝗢𝗡𝗦𝗨𝗟𝗧𝗔𝗧𝗜𝗢𝗡: I offer complimentary consultations. Let's schedule an introductory call to explore potential collaboration. Even if we don't proceed, you'll gain valuable insights for your project. Thank you for considering my profile. Looking forward to our conversation. Highlighted Skills: Full Stack Developer | Expert Full Stack Developer | Full Stack Mobile App Developer | Full Stack AI Developer | Expert Full Stack Mobile App Developer | Mobile Developer | iOS Developer | Android App Developer | Mobile App Development | Cross platform development | AI App Developer | AI App | Mobile Developer | App Developer | Mobile App Development Consultation | IT Consultation | App Developer | AI App Developer | iOS App Development | iOS App | Android App Development | Hybrid App development | Mobile App Development Consultation | Flutter | Firebase | Dart | Flutter Dart | Flutter Firebase | iOS Development | Android App Development | Smartphone | User Authentication | In App Purchases | API Integration

If your iOS app crashes, lags, gets rejected, or just needs to be built right — I'm the developer you call. 10+ years. 90K+ reviews. Zero shortcuts. I've taken apps from a rough idea all the way to millions of real users — and I know exactly what it takes to get there cleanly, fast, and without excuses. 📱 iOS Engineering: Swift 6 / Objective-C SwiftUI / UIKit / AutoLayout / Lottie / Animations Modern Concurrency: async/await, Tasks, Actors, @MainActor, Sendable Combine Framework — reactive programming, publishers, subscribers SwiftData / Core Data / SQLite / Realm Architecture: Clean, MVVM / MVC / VIPER / TCA Networking: URLSession / Alamofire / Kingfisher / WebSocket / REST APIs Payments: StoreKit 2 / RevenueCat / Apple Pay / In-App Subscriptions HealthKit / CoreBluetooth / BLE hardware integrations CoreML / CreateML / OpenAI API — on-device & cloud AI Push Notifications / Deep Links / App Clips / Widgets Liquid Glass UI / iOS 26 APIs CI/CD: Fastlane / GitHub Actions / Xcode Cloud Testing: Swift Testing / XCTest / Unit / UI / Integration CocoaPods / Swift Package Manager / Git 🔍 Code Review & Audit: I can audit your existing iOS codebase for quality, architecture, performance, crash patterns, and App Store readiness — and give you a clear fix plan. 🧠 Consulting: Estimate time and cost for your scope Assess technical feasibility of your idea Recommend the best architecture for your product App Store rejection recovery and resubmission 🏥 Deep Domain Expertise: Health & Fitness apps — HealthKit, calorie tracking, bariatric care IoT / BLE hardware device sync SaaS platforms & CRM systems AI-powered mobile applications Send me your idea — I'll reply within 4 hours.

I built the system UN IFAD uses to track $300M+ in agricultural supply chain value. It won the 2024 World Future Award. Before that, blockchain infrastructure for the DHS Silicon Valley Innovation Program, and CasperSwap DEX, audited by Quantstamp and Halborn. ⚙️ 𝗔𝗜 𝗦𝗬𝗦𝗧𝗘𝗠𝗦 Most AI and blockchain projects fail at the seam between the two. One developer handles AI, another handles blockchain, and nobody owns where they connect. I own the full architecture. On the AI side, I build RAG pipelines, multi-agent systems using LangGraph and CrewAI, LLM orchestration layers, voice AI, and agentic workflow automation using n8n. I have shipped production systems with LangChain, pgvector, Pinecone, Weaviate, OpenAI, and Anthropic SDK. One of them is an AI-powered legal intake system running on WhatsApp via Meta Cloud API and Twilio Voice, built with Claude and Llama 3.3 70B, handling real client conversations at scale. I also build custom AI chatbots, conversational AI systems, AI calling agents, and AI-powered SaaS platforms for healthcare, legal, and enterprise clients, including EHR/EMR integration and appointment booking automation. 🔗 𝗕𝗟𝗢𝗖𝗞𝗖𝗛𝗔𝗜𝗡 𝗦𝗬𝗦𝗧𝗘𝗠𝗦 On the blockchain side, I write smart contracts in Solidity and Rust, deploy across Ethereum, Solana, XRP Ledger, and Casper, and build on Layer 2 networks and Hyperledger Fabric. I have delivered DeFi protocols, DAO governance frameworks, RWA tokenization platforms, NFT development, crypto wallet development, prediction market platforms, and MEV systems. I work with Foundry, Hardhat, Ethers.js, Wagmi, Slither, and The Graph. My smart contract work has been audited by Quantstamp and Halborn. 🛡️ 𝗖𝗢𝗠𝗣𝗟𝗜𝗔𝗡𝗖𝗘 & 𝗗𝗘𝗣𝗟𝗢𝗬𝗠𝗘𝗡𝗧 I also build AI agents and agentic workflow systems that replace manual business processes, API integrations, prompt engineering pipelines, semantic search, and vector database infrastructure. For teams that need on-premise LLM deployment, I use Ollama. For cloud, I deploy on AWS, GCP, and Azure with Docker and CI/CD pipelines. Frontend work is React, Next.js, and TypeScript with FastAPI and NestJS on the backend. Where I work best is at the intersection of AI automation and blockchain verification, inside compliance frameworks including HIPAA, SOC 2, GDPR, and ZATCA. If AI makes the decision, blockchain proves it happened. That is the kind of system regulated industries actually need. Before any engagement I do one scoping call. I will tell you exactly what to build, what not to build, and why. If blockchain or AI does not belong in your project, I will say so. Message me with two lines about your project. I will tell you within 24 hours whether I can help, and how. 🔑 𝗦𝗞𝗜𝗟𝗟𝗦 & 𝗧𝗘𝗖𝗛𝗡𝗢𝗟𝗢𝗚𝗜𝗘𝗦 Claude Code, Gemini, Python, Node.js, MCP, Supabase, GitHub Copilot, Cursor, Lovable, Agentic AI, AI Coding Workflow, LLM Integration, Business Process Automation, Telegram Bot Development, Vibe Coding, SaaS Development, Chatbot Development, Production Hardening, Deployment Pipeline, Prototype, AI Operating System, Machine Learning, Layer 2 Development, TON Blockchain, Smart Contract Audit, Blockchain Architect, Web3 Development, MEV Bot, Tokenomics, Testing, AI Full-Stack, AI Systems Architect, Automation Architect, Data Science, Product Engineer, TensorFlow, PyTorch, Scikit-Learn, Cloud Deployment, AI-Generated Code, CV, Real-Time Conversational Systems, Product Development, MVP, AI App Development, Top 1% AI Engineer, Automatic Speech Recognition, Smart Contract Engineer, ERC20, Asset Management System, Solidity Smart Contract Security, Prediction Based Market Platform, Crypto Sniping Bot, Uniswap V2/V3, PancakeSwap, Crypto DeFi Expert, Wallet Intelligence Monitoring, Advanced LMS, Tachograph Compliance Engine, Algorithm Development, Regulatory Compliance, Fractional AI Architect, Applied AI Engineer, Full-Stack SaaS Developer, AI Personal Operating System Developer, AI Solutions Architect, Healthcare SaaS Platform, Agentic AI Architect, Agent Enterprise Ecosystem, Pathwaize Intelligence, Complex System Rebuilt, AI Voice Automation, AI Infrastructure Engineer, LLMOps Engineer, Lead Cryptography & Systems Architect, Multi-Model Workflow, Behavior Analysis & Monitoring Expert, Secure HIPAA Compliant, OpenAI RAG Platform, AI Revenue Systems Builder, Healthcare AI Security Expert, Machine Learning Engineer, AI-Native Software Engineer, AI Pricing Bot Developer, Custom SaaS Platform Development, Vibe Coding Developer, AI Fuel Intelligence, Senior Product Owner/Manager, Startup GenAI SaaS, Healthcare AI Integration Engineer, AI Model Integration, Healthcare Appointment Booking Automation, Healthcare Systems, Solidity contract architecture

Flutter & AI/ML Mobile App Developer Real-Time, Cross-Platform & Production-Ready Apps 👋 Hi, I am Shivani a Mobile App Developer specializing in Flutter, Native Android, and iOS development, with deep expertise in AI/ML-powered mobile solutions and real-time app experiences. With 6+ years of professional experience, I help startups, businesses, and product founders build high-performance, scalable, and visually polished mobile apps that users love and businesses rely on from initial concept through to App Store and Google Play deployment. My focus is not just development I build complete, intelligent mobile products powered by Flutter, Python AI/ML backends, and real-time technologies like LiveKit, Firebase, and GraphQL that solve real business problems and deliver measurable user value. ───────────────────────────────────────── 📱 𝗪𝗵𝗮𝘁 𝗜 𝗕𝘂𝗶𝗹𝗱 𝗙𝗼𝗿 𝗬𝗼𝘂 ───────────────────────────────────────── I help startups and businesses build: ✔ Full Flutter App Development : UI/UX → development → testing → deployment ✔ Native Android & iOS Apps : Kotlin, Java, Swift & Objective-C ✔ AI/ML Mobile Integration : recommendations, automation & chatbots ✔ Real-Time Audio & Video : LiveKit, WebRTC & conferencing systems ✔ Biometric Authentication : fingerprint & face scan integration ✔ Python Backend Services : AI/ML models & data processing ✔ Firebase & API Integration : Auth, Firestore, Cloud Functions ✔ Payment Gateway Integration : Stripe & Razorpay ✔ App Maintenance & Performance Optimization ───────────────────────────────────────── 🔧 𝗖𝗼𝗿𝗲 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 ───────────────────────────────────────── Flutter & Mobile Development ✔ Flutter & Dart : cross-platform iOS & Android ✔ Native Android : Kotlin & Java ✔ iOS Development : Swift & Objective-C ✔ State Management : Provider, Bloc & Riverpod ✔ Beautiful UI, animations & smooth UX AI/ML Integration ✔ Recommendation systems & predictive analytics ✔ Intelligent chatbots & automation workflows ✔ Python AI/ML models & data processing ✔ AI-powered mobile features & smart assistants Real-Time & Backend ✔ LiveKit : real-time audio & video conferencing ✔ Firebase : Auth, Firestore & Cloud Functions ✔ REST APIs & GraphQL ✔ Google Maps, Geolocation & Geofencing ✔ In-app chat, push notifications & real-time features Deployment & Integration ✔ Google Play Store & Apple App Store deployment ✔ Payment gateways : Stripe & Razorpay ✔ Third-party API & SDK integration ✔ Clean, maintainable & scalable code architecture ───────────────────────────────────────── 🏆 𝗪𝗵𝗮𝘁 𝗬𝗼𝘂 𝗚𝗲𝘁 𝗪𝗵𝗲𝗻 𝗪𝗼𝗿𝗸𝗶𝗻𝗴 𝗪𝗶𝘁𝗵 𝗠𝗲 ───────────────────────────────────────── ✔ 96% Job Success Score Top Rated Plus on Upwork ✔ 6+ years of professional Flutter & mobile development ✔ Real-time audio/video expertise LiveKit & WebRTC ✔ AI-first mobile thinking intelligence built into every layer ✔ Clean, scalable, production-ready Flutter code ✔ Clear communication & reliable delivery on every project ✔ Full lifecycle ownership concept to App Store launch ───────────────────────────────────────── 🌐 𝗜𝗻𝗱𝘂𝘀𝘁𝗿𝗶𝗲𝘀 𝗜 𝗦𝗲𝗿𝘃𝗲 ───────────────────────────────────────── 🚗 Transport & Mobility : ride-sharing, cab booking & delivery apps 💌 Dating & Social Networking : chat, matchmaking & AI recommendations 🎫 Event Management : booking systems & calendar integration 🌐 Social Media & Community Apps : feeds, chat & media sharing 🛍️ E-Commerce & Retail : shopping, payments & order tracking 🏥 Healthcare & Fitness : telemedicine, appointments & wellness 📚 Education & E-Learning : courses, quizzes & video streaming 💳 Finance & FinTech : banking, wallets & secure payments 🍔 Food & Restaurant : delivery, reservations & loyalty programs ✈️ Travel & Hospitality : booking, itineraries & location guides 🏡 Real Estate : listings, virtual tours & agent communication 🎵 Media & Entertainment : streaming, music & content platforms ───────────────────────────────────────── 🤝 𝗠𝘆 𝗪𝗼𝗿𝗸 𝗔𝗽𝗽𝗿𝗼𝗮𝗰𝗵 ───────────────────────────────────────── 1️⃣ Discovery : understand your requirements & business goals 2️⃣ Architecture : design scalable app structure & workflows 3️⃣ Development : build & iterate with transparent communication 4️⃣ Testing : fully tested, optimized & production-ready delivery 5️⃣ Launch : App Store & Google Play deployment with QA sign-off 6️⃣ Support : post-launch maintenance & performance optimization ───────────────────────────────────────── 🚀 𝗟𝗲𝘁'𝘀 𝗕𝘂𝗶𝗹𝗱 𝗬𝗼𝘂𝗿 𝗔𝗽𝗽 ───────────────────────────────────────── Whether you need a Flutter app, a Native iOS or Android application, an AI-powered mobile product, or a real-time audio/video experience : I am ready to take full ownership of the build from day one. 👉 Send me a message to discuss your project goals and let's build something your users will love.

Hi, I’m Otabek – a Senior Mobile Engineer with 5+ years of experience building production-ready iOS, Android, and cross-platform applications for startups and growing businesses. ✔️ +90% Job Success Score 📈 ✔️ Top Rated - by Upwork Top 10% (coming soon) ✔️ Future Engineers National Competition Winner 🏆 ✔️ 5+ years of Experience in Mobile App Development ✔️ 24/7 Availability I specialize in turning ideas into polished mobile products with clean architecture, smooth user experiences, and scalable code. Whether it’s building a new app from scratch, improving an existing codebase, integrating AI, or preparing an app for the App Store, I focus on delivering solutions that are reliable and built to last. What I build * Native iOS Apps (Swift, SwiftUI, UIKit) * React Native Applications * Flutter Applications * AI-Powered Mobile Apps (OpenAI, Claude, Gemini) * ARKit & 3D Scanning Applications * Firebase & Backend Integrations * REST APIs & Authentication * In-App Purchases (StoreKit 2 & RevenueCat) * App Store & Google Play Releases Technical Expertise Swift • SwiftUI • UIKit • Objective-C • React Native • Flutter • Firebase • Node.js • REST APIs • Supabase • PostgreSQL • Core ML • Vision • ARKit • StoreKit 2 • RevenueCat • Git • TestFlight Industries I’ve Worked With * AI & Productivity * Health & Wellness * Social & Community Apps * Marketplace Platforms * Business Management Systems * On-Demand Services * AR / 3D Scanning * Subscription-Based Apps Why clients work with me * Clean, scalable, production-ready code * Strong communication throughout the project * Experience working with existing codebases * Pixel-perfect UI implementation from Figma * Fast issue investigation and debugging * Long-term product mindset, not just task completion Whether you need to build an MVP, modernize an existing application, integrate AI features, or launch a production-ready mobile product, I’d be happy to help. Let’s build something great.

Senior iOS Developer with 14+ years building apps that ship — from zero-to-App Store MVPs for startups to scaling complex codebases for established products. 🚀 What I can help you with: ✅ New iOS app — Swift, SwiftUI, UIKit from scratch ✅ MVP development — concept to App Store submission ✅ Legacy app rescue — refactor Objective-C to Swift, fix crashes, improve performance ✅ Feature development — in-app purchases, push notifications, location, media, APIs ✅ Code review & architecture — MVVM, MVC, clean architecture ⚙️ Core technologies: 🔹 Swift · SwiftUI · UIKit · Objective-C (legacy support) 🔹 Firebase (Auth, Realtime DB, Push, Dynamic Links, Messaging) 🔹 CoreData · SQLite · RESTful API integration 🔹 AVFoundation · CoreAudio · MapKit · StoreKit 🔹 In-app purchases · Push notifications · GPS · Photo/Video/Audio 🔹 Git · CocoaPods · Swift Package Manager 🔹 App Store submission · TestFlight · deployment I've worked across fintech, social, media, and entertainment apps — including integrations with Facebook, Google, Instagram, Twitter, YouTube, and Vimeo. I also have cross-platform experience in Cocos2d-x (iOS & Android). I use AI-assisted development tools (Claude, Codex) to ship faster without cutting corners on code quality. 14 years means I've seen every edge case, debugged every crash type, and shipped under every kind of deadline. You get a developer who moves fast and doesn't disappear. 📩 Send me your project brief — I'll respond within 4 hours.

🚀 20+ years of Experience | Expert in Web & Mobile Solutions | UI/UX Specialist Technologies I Excel In: 💻 React/Next.js | Node.js | Python | WordPress | PHP 📱 Flutter | iOS | Android 🎨 Figma | Front-end Technologies What I Offer: 🌐 Web Design & Development: From sleek, responsive interfaces to robust backend architecture, I specialize in creating dynamic web applications using React/Next, Node.js, Python. My focus is on delivering fast, secure, and scalable solutions that exceed client expectations. 📱 Mobile Solutions: Whether it's native iOS and Android apps or cross-platform Flutter applications, I have a proven track record of developing high-performance mobile solutions tailored to client needs. I thrive on pushing the boundaries of mobile technology to deliver seamless user experiences across devices. 🎨 UI/UX Excellence: As a dedicated UI/UX specialist, I prioritize user-centric design principles to create interfaces that not only look stunning but also provide intuitive navigation and optimal usability. I believe in the power of design to elevate brands and foster lasting connections with users. Why Choose Me: ✅ Proven Track Record: I have successfully delivered a diverse range of projects for clients across various industries, earning rave reviews for my professionalism, attention to detail, and commitment to excellence. ✅ Effective Communication: I understand the importance of clear and timely communication throughout the project lifecycle. I work closely with clients to understand their vision, provide regular updates, and ensure alignment every step of the way. ✅ Client Satisfaction: My ultimate goal is to not just meet but exceed client expectations. I am dedicated to delivering projects on time, within budget, and with a level of quality that consistently delights and inspires. Let's collaborate to bring your digital vision to life! Get in touch today to discuss how I can help you achieve your goals.

I’m a Top-Rated Senior Full Stack Developer with 13+ years of experience building scalable web and mobile applications for startups, agencies, and enterprise clients. I specialize in delivering high-performance, user-focused solutions across both front-end and back-end development, with a strong focus on clean architecture, scalability, and long-term maintainability. ✅ Top Rated Plus – Expert-Vetted Top 1%
 ✅ 13+ Years of Professional Experience
 ✅ Full Stack Web & Mobile Application Development
 ✅ Strong Experience with Startups, SaaS Platforms & Enterprise Solutions Technical Expertise: Mobile:
Flutter, React Native, Swift, Java CMS & E-Commerce:
WordPress, Shopify, WooCommerce, HubSpot, Drupal Frontend:
React, Angular, Vue.js, Next.js, HTML5, CSS3, Tailwind CSS, Bootstrap Backend:
Node.js, Express.js, Django, Python, Laravel, .NET Databases:
PostgreSQL, MySQL, MongoDB, Firebase DevOps & Cloud:
Git, Docker, CI/CD, AWS, Azure, Nginx I have extensive experience leading projects from concept to deployment, building robust APIs, custom platforms, mobile applications, and scalable cloud-based systems while ensuring high code quality and seamless user experiences.

Top Rated AI SaaS & Mobile App Developer with 7+ years of experience building scalable SaaS platforms, AI-powered applications, backend systems, and mobile apps for startups and growing businesses. I mainly work with founders and businesses that need more than just a developer. A big part of my work involves improving existing systems, reducing technical debt, scaling backend architecture, integrating AI workflows, and helping teams ship features faster without compromising code quality. I specialize in: • AI SaaS Platforms • Web & Mobile App Development • AI Integrations & Automation • SaaS Dashboards & Admin Panels • Existing Codebase Optimization • AWS Serverless Applications • Real-Time Systems & WebSockets • MVP Development & Product Scaling Tech Stack: • Next.js, React.js, React Native • Node.js, NestJS, Express.js • Laravel, PHP • MongoDB, MySQL, PostgreSQL • AWS Lambda, API Gateway, S3 • REST APIs, WebSockets, OAuth, JWT • Stripe Subscription Systems • OpenAI, ChatGPT API, AI Workflows I’ve worked on SaaS dashboards, AI-assisted workflows, real-time systems, subscription platforms, chat systems, scalable backend architectures, and long-term production applications. I also regularly help clients with bug fixing, backend cleanup, authentication systems, API integrations, and performance optimization for existing applications. My focus is always on building stable, scalable, and maintainable systems that support long-term business growth instead of short-term quick fixes. I also use modern AI-assisted development tools like Cursor, Claude Code, and Copilot to improve development speed while keeping the architecture clean and production-ready. Why clients work with me: • Top Rated Upwork freelancer • Clean and scalable architecture • Fast communication and reliable delivery • Long-term technical support • Business-focused problem solving • Production-ready development approach If you’re building an AI-enabled SaaS platform, scalable backend system, web application, or mobile app, feel free to reach out.

👋 Hi Upworkers, Welcome to my profile page. With over a decade of project management experience in various domains, I specialize in propelling both greenfield and brownfield software projects, ensuring they are innovative, responsive, and secure, irrespective of their complexity. 🎯 My project management strengths: - Collaborative scope & goal definition with stakeholders. - Resource allocation – including personnel, budget, and equipment. - Risk management with effective mitigation strategies. - Continuous progress monitoring & status communication. - Ensuring timely delivery while upholding quality standards. - Proficiency in Agile and Waterfall methodologies and strict adherence to relevant regulations. 🌍 Our team: Our seasoned and carefully vetted experts hail from Ukraine and Eastern Europe, upholding the highest standards in software development. 🔍 Our team's core expertise: 📌Web Backend: Node.js, NextJS, Express, Python, C++, .NET Core, Blazor, ASP.NET Core, PHP, WordPress, Go, Java, Kotlin 📌Web Frontend: Angular, React, Vue, Vuetify, Nuxt, Blazor 📌Mobile Development: Xamarin, Swift, Objective-C, C++, Kotlin, Java, Flutter, React Native, 📌Desktop Development: C#/.NET, Xamarin, C++, wxWidgets, Qt 📌UI/UX: User Interface Research, User Scenarios, User Interface Design, Usability Testing, Wireframing, Prototyping, UX Research, UX Writing, App design, web design, Visual Communication, UI/UX audit 📌Branding: logo design, brand book, custom graphics, brand identity 📌AR/VR: Unity, AR Foundation, AR Kit, AR Core, Kinect, Computer Vision 📌3D Modeling, Animation, Video Montage: Blender, Metahuman, Cinema 4D, Speedtree, DaVinci Resolve, Marmoset 📌Blockchain: Web3.js, Solidity, C++, Go, Rust 📌Embedded: C, C++, Python: 📌Cloud Platforms: AWS, Google Cloud, Azure, Heroku, Docker, DigitalOcean. Feel free to contact me with any questions or need additional information.