Senior AI Engineer with 12+ years of experience building multi-agent AI systems, RAG pipelines, workflow automation, and full-stack SaaS platforms using LangChain, CrewAI, n8n, and OpenAI, delivering scalable, production-ready solutions from architecture to deployment. I personally lead every engagement, backed by a vetted team for when projects need to scale. Across 36 Upwork contracts (with 100% Job Success Score) and 300+ projects throughout my career at AllZone, Fieldforce, Allshore, and AAJ Technologies, I've built systems that ship on time and hold up in production. What I build: → Multi-agent AI systems - LangChain, CrewAI, AutoGen, RAG pipelines, and LLM-powered workflows built for production → Automation infrastructure - n8n, Make, Zapier, and custom integrations that eliminate manual bottlenecks → SaaS backends & APIs - Node.js, .NET, REST/GraphQL, Stripe, and complex third-party integrations → Full-stack web apps - MERN, Next.js, PHP, Laravel, with scalable cloud architecture on AWS and Azure Recent work: → Architected a CrewAI multi-agent system for a patent-pending fintech platform, 330+ hours, 5-star review → Rescued a stalled .NET + Stripe + Persona + Twilio build after the original developer quit, delivered on deadline in 500+ hours, and again, a 5-star review → Built an AI-powered FDA Label Compliance System, automated a regulatory review process that previously required hours of manual work For projects that need dedicated full-stack depth, standalone MERN builds, .NET enterprise systems, or PHP/Laravel backends, my team handles those end-to-end with the same standards and ownership model. Who I work best with: Founders and technical leads who want a senior engineer that communicates clearly, moves fast, and takes full ownership from architecture to delivery. Let’s connect and build something exceptional!

A Top 1% on UpWork Expert Vetted Freelancer! [Aug 2026 update: I'm privileged that my (and my small team's) services are in such high demand. 🙏🏼 Just to confirm my pricing: UX/UI and / or branding work is billed at $150 per / hour. All projects are scoped and agreed beforehand.👌🏼]. I’m a brand and UX/UI designer with 10+ years of experience working with tech companies of various sizes and stages, from high profile venture-backed startups backed by venture capital firms like Sequoia, a16z, and Y Combinator to large tech companies. I’ve collaborated with companies across many different sectors from SaaS, to AI, to healthtech, real estate tech, fintech, and more. I pride myself on delivering design solutions that combine aesthetics with functionality. If you have a project you’d like to collaborate on, I’d love to hear from you. Here's what clients said! ⭐️⭐️⭐️⭐️⭐️ "We can't rate MIchelle highly enough for taking our vision and early designs, and making them 100x better than we could have asked for. It was an extremely collaborative process and we couldn't be happier with our new site" Caleb - CTO ⭐️⭐️⭐️⭐️⭐️ “Feels so great to give something to someone and have that person always make it better than I could have hoped for” - Patrick P. (Project Manager) ⭐️⭐️⭐️⭐️⭐️ “I felt like I was looking at the future” - VC Investor ⭐️⭐️⭐️⭐️⭐️ “Impeccable. Michelle’s work is simply impeccable” - Dan - CEO ⭐️⭐️⭐️⭐️⭐️ “We’re ecstatic with the results of the website. Can’t express how much we’ve enjoyed working with the team and appreciated the hard work thats gone into this, so thank you.” - Alex - CEO ⭐️⭐️⭐️⭐️⭐️ “A bit of feedback I got from someone who did diligence for a HNW investor is that it was the best fund manager deck he’s ever seen” - GP at VC fund Services 🎨 Branding 🏢 Corporate identity 📏 Style guide 🖼️ Visual design 📈 Marketing design 🌐 Landing page design 📊 Investor decks 🎨 Art direction 🧑‍🎨 Logo creation 📱 Mobile app design (UX/UI) 🖥️ Web app design (UX/UI) ✏️ Wireframing 🖱️ Clickable prototypes 🛠️ Design systems 🔍 Product audits Design tools 🖌️ Figma ✒️ Adobe Illustrator 📷 Adobe Photoshop 🎬 Adobe After Effects 💻 Webflow

14+ YEARS EXPERIENCE | 20+ AI PROJECTS | 18,000+ HOURS | Top Rated | Risk-Free Trial I help businesses and enterprises build AI-powered products, intelligent automation, and scalable web and mobile applications that drive efficiency, reduce operational costs, and accelerate business growth. I specialize in transforming ideas into production-ready products. From autonomous AI agents and enterprise knowledge assistants to SaaS platforms and custom business applications, I deliver solutions that are secure, scalable, and built for long-term success. Whether you're validating an MVP, integrating AI into an existing product, or building an enterprise-grade platform from the ground up, I provide end-to-end development from architecture and AI strategy to deployment and ongoing optimization. ✅AI & Intelligent Automation: I build AI solutions that go beyond chatbots. ◐AI Agents & Agentic AI Systems. ◐OpenAI (GPT-5), Claude & Gemini Integrations ◐RAG (Retrieval-Augmented Generation) & Enterprise Knowledge Bases ◐LangChain, LangGraph, CrewAI & MCP ◐AI Chatbots & Virtual Assistants ◐AI Document Processing (OCR + LLM) ◐Multi-Agent Workflows & AI Orchestration ◐Workflow Automation using n8n, Make & Zapier ◐AI SaaS Platforms & Custom GPT Applications ➡️Full-Stack Product Development: From frontend experiences to cloud infrastructure, I build complete, production-ready solutions. ◐React.js, Next.js, Vue.js & Angular. ◐Node.js, Python, FastAPI, Laravel & .NET. ◐Flutter & React Native (iOS & Android). ◐REST APIs, GraphQL & Microservices. ◐PostgreSQL, MySQL, MongoDB, SQL Server & Firebase. ◐AWS, Azure, Google Cloud, Docker & Kubernetes. ➡️AI Tools & Technologies: AI Development • Agentic AI • AI Automation • OpenAI • GPT-5 • Claude • Gemini • RAG • LangChain • LangGraph • CrewAI • MCP • Python • FastAPI • Node.js • React • Next.js • Flutter • React Native • AWS • Docker • Kubernetes • PostgreSQL • MongoDB • Stripe • n8n • Make • Zapier ✅What I Can Build for You: ◐AI Sales Agent. ◐AI Workflow Automation. ◐AI Ticketing System. ◐AI enterprise internal operation. ◐Marketplace & Booking Platforms. ◐Healthcare & FinTech Applications. ◐Mobile Apps (iOS & Android). ◐Custom CRM, ERP & Workflow Solutions. ◐MVPs for Startups. ◐Legacy System Modernization. ➡️Why Clients Choose Me: ▣14+ Years of Product Engineering Experience. ▣132+ Successfully Delivered Projects. ▣18,000+ Hours of Proven Development Experience. ▣End-to-End Ownership from Idea to Production. ▣Scalable Architecture & Clean, Maintainable Code. ▣Transparent Communication & Reliable Delivery. ▣Long-Term Technical Partnership. ➡️Industries Served: SaaS • Healthcare • FinTech • EdTech • Logistics • E-commerce • Real Estate • LegalTech • Travel • Manufacturing • Marketplaces • Enterprise Software. ✅Client Reviews: ⭐ “Exceptional delivery and attention to detail. He made complex requirements simple and usable.” ⭐ “Strong communication and deep expertise. Delivered exactly what we needed.” ⭐ “Reliable, skilled, and easy to work with. We’ll continue working with him.” If you're looking for a developer who can design the AI strategy, architect the platform, build the application, integrate modern AI technologies, and deliver a production-ready solution, Send me a message, and I’ll be happy to review your requirements. I even offer a risk-free initial consultation.

✨ PREMIUM PRO | PRO VERIFIED SEASONED AND EXPERT DEVELOPER ✨ Hey there! I'm Stas Sorokin, your go-to tech maestro, ready to breathe life into your digital dreams with a sprinkle of coding magic and a dash of innovation. With over ten years of crafting digital solutions for top-tier organizations worldwide, I've mastered the art of turning complex ideas into sleek, efficient realities. Whether it's front-end flair, back-end brawn, native app novelty, or mobile development mastery, I'm your guy. Why Stas? Here's Why: - 🌟 Proven Excellence: CTO and Founder of a Software Developer firm & a Pro Verified developer with a 5-star rating across 50+ reviews. My code isn't just clean; it's pristine. - 🚀 Tech Wizardry: From AI applications that dazzle to web wonders and API alchemy, I've done it all. My toolbox is a tech enthusiast's dream, ready to tackle your unique challenges. - 💡 Client-Centric Vision: Your vision is my mission. I dive deep into your world, ensuring the final product isn't just good; it's tailor-made for your success. - 🤖 AI & Beyond: Leveraging the latest in AI, I transform businesses, streamline operations, and create experiences that resonate and revolutionize. What I Bring to the Table: - 🎨 Front-End & Back-End Development: Crafting visually stunning and functionally robust platforms that engage and convert. - 📱 Native & Mobile Development: Seamless, responsive designs that ensure your project shines on any screen, anywhere. - 🧠 AI Integration & Development: From sophisticated AI applications to smart API integrations, I harness the power of AI to elevate your project. - 🛠 Full-Stack Expertise: With a comprehensive skill set, I oversee your project from conception to launch, ensuring a cohesive and compelling digital experience. Your Journey together: 1. Discovery & Strategy: We kick off with a deep dive into your vision, mapping out a strategy that aligns with your goals. 2. Design & Development: With a clear plan in place, I bring your project to life, ensuring every pixel and line of code adds value. 3. Launch & Beyond: Post-launch, I stand by you, ready to iterate and evolve your project to keep you ahead of the curve. Let's Make Magic Happen: Ready to transform your ideas into digital excellence? I'm just a message away. Reach out, and let's embark on a journey that takes your project from concept to reality, exceeding expectations every step of the way. 🚀 Tech Stack Extravaganza: Dive into My Digital Toolbox! 🚀 Frontend Brilliance: - 🌐 JavaScript Ecosystem: Vue.js, Node.js, ExpressJS, Angular, Nuxt.js - 🎨 React Mastery: React.js (with Redux & Saga), React Native for seamless mobile experiences - 🖌 Styling Superpowers: HTML/CSS with a flair for Tailwind, Livewire; embracing PWA for next-gen web apps - 📐 Design Systems: Material UI, Ant Design, Styled Components for visually stunning interfaces Backend & Database Dynamo: - 🛠 PHP Prowess: Laravel (PHP 7 & 8) for robust backend solutions - 💾 Database Diversity: MySQL, PostgreSQL, MongoDB, DynamoDB for scalable data storage - 🌍 API Artistry: Expert in both development (Node.js, Python - Django, Go - Golang) and integrations (Stripe, PayPal, Twilio, and more) Cloud Giants & DevOps: - ☁️ AWS Arsenal: Route 53, API Gateway, Lambda, DynamoDB, S3, SageMaker, and more for scalable, efficient cloud solutions - 🌌 Azure Suite: DNS, API Management, Functions, Cosmos DB, Machine Learning, and more for powerful cloud-based applications AI & Machine Learning Marvels: - 🤖 AI Integration & Development: GPT-4, Embeddings, RAG, LangChain, Cloud 2.1, Mixtral, GPT-4 Vision, Gemini Pro + Vision, Gemini Ultra, AutoGen for cutting-edge AI solutions - 🧠 Smart Solutions: Building AI SaaS, integrating ChatGPT, fine-tuning LLM models, crafting prompt engineering solutions, and developing smart chatbots and voice assistants Mobile Development Magic: - 📱 Cross-Platform Excellence: React Native, iOS, Android development with tools like Expo and Fastlane for top-notch mobile apps Web Frontend Wonders: - 🌟 Next-Gen Frameworks: Next.js, Nuxt.js, Angular, Vue, Electron for dynamic, responsive web applications Backend Backbone: - 🔧 Node.js & More: MongoDB, Redis, PostgreSQL, SQL, MySQL, GraphQL, Cassandra, RabbitMQ for powerful, efficient backend services Freebies Because You're Awesome: - 🎁 FREE Quotation & Project Consulting: Because your vision deserves the best start Let's Create Digital Magic Together! - 🚀 Your project isn't just another task on my list; it's the next opportunity to push the boundaries of what's possible. With this tech stack, your vision is primed to soar beyond the ordinary. Ready to embark on this journey? Let's chat and transform your ideas into digital marvels together! Stas Sorokin - Where Technology Meets Imagination. 📩 Invite me to your project today and let's create something extraordinary together!

Is your blockchain product ready for real users, or is it a prototype that breaks under live transactions? Most Web3 projects fail at the boundaries between smart contracts, wallets, trading operations, and backend systems. 🏆 20+ years architecting production systems at principal engineer level 📊 $200K+ earned on Upwork across 32 architecture projects 🎯 100% Job Success Score, Top Rated Plus on Upwork ⚡ 11 years architecting Fintech / Trading / Accounting solutions ⚡ 8 years architecting blockchain products across Bitcoin, EVM, Solana ecosystems 💼 CEO at Osambit, a 20-person engineering team ✅ Enterprise Blockchain Architect certified, former Sr Principal Engineer at Nordstrom ⭐⭐⭐⭐⭐ "We've had the opportunity to collaborate with the Osambit team, and it's been a great experience. They're highly professional, responsive, and truly understand the final goal. Their technical expertise and ability to deliver on time have been key to the success." (Alwyn V., IXO World) As a Blockchain Architect with 20+ years of production engineering experience and two years focused on Web3, I design blockchain and fintech products that operate reliably beyond a demo. I work across Solana and EVM networks—including Ethereum, Polygon, Base, BSC, and Arbitrum—as well as enterprise platforms such as Hyperledger Fabric and Besu. My work connects secure smart-contract, wallet, payment, and remittance flows with the backend systems, operational controls, and user experiences a real product needs. Every engagement starts with architecture: chain selection, custody and transaction boundaries, compliance-aware workflows, failure modes, scalability, and security. That architecture-first approach helps blockchain and neobanking products withstand live usage, not just testnet scenarios. 🔶 Centralized exchange: architecture for trading operations, wallet flows, and reliable backend integration 🔶 Custodial wallets: secure custody, transaction handling, and multi-wallet platform architecture 🔶 Trading automation system: real-time blockchain-integrated trading workflows with operational safeguards 🔶 Liquidity automation system: DeFi and liquidity-management automation across Solana and EVM ecosystems 🔶 Fintech, neobanking & remittance apps: payment, account, wallet, and cross-border transfer architecture 🔶 Bitcoin mining facility control panel: operational dashboard and control-system architecture for mining infrastructure 🔶 Blockchain-integrated game: NFT features, token and wallet integrations, and production-ready game backend design 🔶 Enterprise blockchain solutions: permissioned-network architecture and public-chain integrations using Hyperledger Fabric or Besu 🔶 Nordstrom (Sr Principal Engineer, 5 years): architected 9+ enterprise systems | led 10 offshore engineering teams | supply chain, payment, logistics domains WHAT I DO ✅ Blockchain Architecture: chain selection, system design, security boundaries, and production rollout planning ✅ Solana Development: Rust programs, SPL standards, RPC integrations, and high-throughput DeFi systems ✅ EVM & Smart Contracts: Solidity development and integrations for Ethereum, Polygon, Base, BSC, and Arbitrum ✅ Wallet & Custody Systems: custodial wallet architecture, secure transaction handling, and multi-wallet integrations ✅ Fintech, Neobanking & Remittance: payment flows, account and wallet systems, cross-border transfers, and operational controls ✅ DeFi, Trading & Liquidity Automation: trading workflows, liquidity systems, DEX integrations, and operational controls ✅ NFT & Tokenized Products: NFT minting, metadata, marketplace and royalty logic, and blockchain-integrated game features ✅ Enterprise Blockchain: Hyperledger Fabric and Besu solutions, permissioned-network architecture, and API or oracle integrations ✅ Full-Stack Web3 Platforms: React interfaces, Node.js or Python backends, web3 integrations, and real-time transaction services ✅ Production Infrastructure: AWS, Docker, Kubernetes, CI/CD, observability, automated testing, and scalable data systems WHO I WORK WITH 🎯 B2B and B2C companies building blockchain products, fintech and neobanking apps, exchanges, wallets, DeFi platforms, or games 🎯 Founders and CTOs who need Web3, payment, or remittance systems running in production with real users and real assets 🎯 Teams with multi-week engagements (4+ weeks minimum), not 5-minute tasks 🎯 Companies that understand blockchain architecture is a system design and security problem, not just a smart-contract problem 🎯 Clients who value senior engineering judgment over the cheapest hourly rate MY PROCESS 1️⃣ Architecture Review: 24-hour turnaround on an initial system map, risk review, and scope estimate for your blockchain or fintech product. Close collaboration with business and deep domain immersion. 2️⃣ Design: chain selection, smart-contract, wallet, payment, and remittance boundaries, backend integration, and security plan 3️⃣ Build: production blockchain or fintech

🕰️ Available in the US, Canada, UK, Australia, and preferred time zones 🏆 Top-Rated — Top 10% on Upwork 🌟 10+ Years of Software Development Experience ✔ 90+ Successful Projects Delivered 📞 40+ Hours/Week Availability I build AI-powered SaaS products and high-performance web applications that are designed to work reliably in the real world, not just look good in a demo. If you need a developer who can take an idea from architecture → development → AI integration → deployment, I can handle the full stack. I specialize in building AI SaaS platforms, web applications, dashboards, automation systems, API integrations, and custom business software using modern technologies including React, Next.js, TypeScript, Python, and AI/LLM APIs. My approach is to understand the business logic first, then build the technical architecture around it. This helps avoid the common problems of rushed SaaS development: fragile integrations, poor database design, slow applications, difficult-to-maintain code, and AI features that don't work reliably in production. ### What I can build for you ✔ AI-powered SaaS platforms ✔ Custom web applications ✔ AI agents and automation systems ✔ LLM and OpenAI integrations ✔ React / Next.js frontends ✔ Python backends and APIs ✔ REST API & third-party integrations ✔ Admin dashboards and internal tools ✔ Authentication, subscriptions & payment systems ✔ Database architecture and optimization ✔ Real-time applications and communication systems ✔ MVPs and production-ready platforms ✔ Existing application modernization and performance improvements ### My Core Stack Frontend: React, Next.js, TypeScript, JavaScript, Tailwind CSS Backend: Python, FastAPI, Flask, Node.js AI: OpenAI, LLM APIs, AI Agents, RAG, embeddings, computer vision, automation Databases: PostgreSQL, MySQL, MongoDB, Redis Integrations: REST APIs, webhooks, third-party SaaS/API integrations Infrastructure: Docker, Linux, cloud deployment, CI/CD I do not just write code I take ownership of the architecture, implementation, integrations, performance, and production readiness of the application. If you're building an AI product, SaaS platform, or complex web application, send me the requirements and I'll help you turn them into a practical, scalable solution. Available 40+ hours/week and comfortable working with US, Canada, UK, Australia, and other international teams. 🔑 Keywords: Full Stack Developer | MERN Stack Developer | Senior Full Stack Developer | React Developer | Node js Developer | Full Stack Developer MERN | Next js Developer | MongoDB Developer | Expert Full Stack Developer | Express js Developer | GraphQL Developer | Full Stack Developer SaaS | Backend Developer | TypeScript Developer | Full Stack Developer React Node | Angular Developer | PostgreSQL Developer | Full Stack Developer API | Web Application Developer | Cloud Developer | Full Stack Developer MongoDB | DevOps Developer | REST API Developer | Full Stack Developer Azure | Docker Developer | CI CD Developer | Full Stack Developer UI UX | JavaScript Developer | Full Stack Developer MVP | Frontend Developer | WebSocket Developer | Full Stack Developer Clean Code | SaaS Developer | Full Stack Developer Scalable | API Developer | Full Stack Developer Bootstrap | MUI Developer | Full Stack Developer Docker | Tailwind Developer | Full Stack Developer WebSocket | UI UX Full Stack Developer | AI | OpenAI | API integration

Video Surveillance, CCTV, Computer Vision, OpenCV, AI – I build CCTV, object detection, and real-time video systems that scale. 14,700+ hours and $600K+ earned on Upwork. 100% JSS, Top Rated Plus. 15 years of senior engineering + Spec-First Agentic Engineering. ⚡ 𝗙𝗿𝗲𝗲 𝗣𝗥𝗗. 𝗠𝗩𝗣 𝗶𝗻 𝟳-𝟭𝟰 𝗱𝗮𝘆𝘀. 𝗙𝗿𝗲𝗲 𝗰𝗼𝗱𝗲 𝗿𝗲𝘃𝗶𝗲𝘄 𝗼𝗿 𝗮 𝟮-𝘄𝗲𝗲𝗸 𝘁𝗿𝗶𝗮𝗹 𝗼𝗻 𝗮𝗻 𝗲𝘅𝗶𝘀𝘁𝗶𝗻𝗴 𝗰𝗼𝗱𝗲𝗯𝗮𝘀𝗲. ⚠️ Press the Invite button on my page and let's talk about your project. 𝗦𝗲𝗹𝗲𝗰𝘁𝗲𝗱 𝗢𝘂𝘁𝗰𝗼𝗺𝗲𝘀 → VALT - enterprise CCTV and video surveillance SaaS. 770 organizations, 50K+ users, 2,500 IP cameras. Grew from a $1M launch year to $9M ARR. Motion detection, HIPAA/GDPR storage, 12-year partnership. → MindBox - smart video surveillance with AI analytics. Anomaly detection, facial recognition, and forensic search across 50+ deployments with live camera-map feeds. → Tennis analytics - a computer-vision pipeline that tracks players and the ball from match video for automated stats. → ALDA - generative AI course builder. Co-designed with 70+ U.S. educators; partner schools serve 500,000+ students. +20% educator efficiency. → BrainCert - world's first WebRTC + HTML5 LMS. $3M revenue, 100K+ customers, 500M+ classroom minutes. 𝗜 𝗔𝗺 𝗠𝗼𝘀𝘁 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲𝗱 𝗜𝗻 → Video Surveillance and CCTV - custom CCTV SaaS with secure storage, IP-camera ingestion, motion detection, and forensic search → Computer Vision and Object Detection - OpenCV, YOLO, TensorFlow, PyTorch for anomaly detection, face recognition, background blur, and incident alerts → AI Full-Stack Apps - OCR, real-time translation, autonomous agents, and object recognition on top of video → Video Streaming and Players - RTMP, HLS, WebRTC, sub-second latency, custom players on AWS → E-Learning, EdTech, and Virtual Classrooms - LMS and course authoring, curriculum and instructional design, live WebRTC and Agora classrooms, interactive whiteboards, AI grading and assessments, generative-AI courses, SCORM/LMS integrations 𝗔𝗴𝗲𝗻𝘁𝗶𝗰 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿𝗶𝗻𝗴 & 𝗦𝗽𝗲𝗰-𝗙𝗶𝗿𝘀𝘁 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 I work spec-first, not vibe-first. I write the technical spec and architecture before any code is generated. Then I drive AI agents (developer, tester, analyst) against strict guardrails to produce production-grade code. The hard parts I handle or verify myself: real-time computer vision, OpenCV detection pipelines, and high-load video backends. You get the speed of AI with the stability of a senior engineer. 𝗛𝗼𝘄 𝗪𝗲 𝗦𝘁𝗮𝗿𝘁 30-min discovery → spec-first plan with architecture and a ±10% estimate → AI dev environment with guardrails → MVP with CI/CD and a 2-week demo cadence. 𝗛𝗼𝘄 𝗬𝗼𝘂 𝗖𝗮𝗻 𝗪𝗼𝗿𝗸 𝗪𝗶𝘁𝗵 𝗠𝗲 → MVP from scratch - the fastest safe path to production with Spec-First Agentic Engineering → Team extension - I join as the lead on hard modules: computer vision, AI, video surveillance, WebRTC → Rescue mission - I fix, modernize, and stabilize existing codebases, including vibe-code cleanup 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀 𝗜 𝗨𝘀𝗲 𝗗𝗮𝗶𝗹𝘆 → Computer Vision and AI: OpenCV, YOLOv8, TensorFlow, PyTorch, Keras, Image Recognition, OpenAI API, Whisper, Deepgram, NLP → Video: WebRTC, Agora, FFmpeg, Wowza, Kurento, HLS/DASH, RTMP/RTSP → Backend: Node.js, NestJS, Express, Python (FastAPI), PHP/Laravel, C++ → Frontend: React, Vue, Angular, TypeScript → Infra: AWS, GCP, Docker, Kubernetes, PostgreSQL, MongoDB, Redis → Security: AES-256, HIPAA, GDPR, SOC II → EdTech: LMS/SCORM, virtual classrooms, interactive whiteboards, course authoring, quizzes and assessments, AI grading 𝗪𝗵𝘆 𝗙𝗼𝗿𝗮 𝗦𝗼𝗳𝘁 100% Upwork JSS · 914 jobs · $10M+ earned · 401K+ hours · 625+ projects since 2005 · 400+ clients across 17+ countries · Top WebRTC Developer 2022 and Top Telecom Developer 2024 · 1 of 400 devs passes our internal selection · estimates within ±10% of actuals. 𝗖𝗹𝗶𝗲𝗻𝘁 𝗙𝗲𝗲𝗱𝗯𝗮𝗰𝗸 "We've been working together for 10 years and continue. Fora Soft planned and built our entire Wowza-based video surveillance SaaS from scratch across web, iOS and Android." - Dustin, CTO @ VALT (50,000 users, 770 orgs, 2,500 IP cameras) ⚠️ Press the Invite button or message me – I'll send back an SRS, an estimate, and the fastest safe path to production.

Full stack dev, 7+ yrs, allergic to over-engineering :) Property management tools, logistics with live IoT tracking, marketing data platforms, CRM and HR systems, a bit of crypto too. AI is coming for us all, but for now Claude Code just does what I tell it 🤖 Node.js and React is my love but React Native is my passion I'm a senior Full Stack Developer React Node.js with 7+ years building web and mobile apps end to end, from the database up to pixel-perfect interfaces. I live in the JavaScript and TypeScript ecosystem and pair a React and Next.js frontend with a Node.js backend to ship scalable web applications and SaaS platforms. 🏆 7+ years as a Full Stack Developer React Node.js & React Native Mobile Developer 🏆 $100K+ earned on Upwork as Full Stack developer at 100% Job Success Score with Top Rated status 🏆 3,000+ hours as a full stack web developer & React Native mobile developer across 10+ delivered projects 🏆 10+ web app development and mobile app development projects delivered as a Full Stack Developer I'M USUALLY BROUGHT INTO PROJECTS THAT NEED: - a Full Stack Developer who can take a feature from the database all the way to the UI without handing it off - a Backend Developer or Backend Engineer who has kept real production systems running, not just demos - a React Native Mobile Developer to ship a single codebase to both iOS and Android with proper cross-platform mobile app development - a Front End Developer or React developer who gets the React and Next.js UI pixel-perfect - a SaaS Developer who builds for the version you'll have in two years, not just launch day - an MVP developer whose MVPs are made to grow into real SaaS products - a web app developer for web applications where the workflows and business rules are the hard part BACKEND IS WHERE I SPEND MOST OF MY TIME. AS A BACKEND DEVELOPER AND NODE.JS DEVELOPER, THAT MEANS: - designing and shipping backend services in Node.js and TypeScript with Nest.js and Express, the full stack developer react node engine behind most of my progressive web applications - owning data in PostgreSQL end to end, from schema to migrations, plus Redis, MongoDB and DynamoDB where they fit - treating API integration as core work, the kind of api developer territory that covers REST APIs IN A REACT NATIVE MOBILE DEVELOPER ROLE, I CAN TAKE CARE OF: - shipping a single React Native codebase to iOS and Android, real cross-platform mobile app development instead of two separate native teams - setting up React Native with Expo, navigation, push notifications and React Native Firebase for auth, storage and messaging - adding real-time features such as chat and calls with React Native WebRTC, plus offline support and clean mobile app design MY STRONG SKILLS INCLUDE: - Programming Languages: Javascript (ES5+) Typescript C# Solidity - Technologies: Node.js HTML5/CSS3 React React Native Smart Contracts (Ethereum) Ether.js - Frameworks: Express.js Nest.js Next.js Koa.js .NET Core React Native (Expo) - Libraries: Bootstrap Moment.js RxJs Nodemailer Redux Redux-toolkit Axios Sequelize TypeORM Prisma Dapper Entity Framework AutoMapper luxon SocketIO JsonWebToken Storybook - DBMS: MySQL PostgreSQL MongoDB FireBase SQlite3 DynamoDB Redis CosmoDB Neo4j - AI Tools I can use: Cursor GitHub Copilot Codex Claude A note on honesty, because it saves everyone time. I'm not your python developer, php javascript or java backend hire. I won't claim full stack developer php, python full stack developer, ruby on rails, wordpress full stack work as my own. A dedicated wordpress developer, shopify developer or flutter developer is the better call. I'm always open to new challenges, whether you need a full stack developer, a react native developer or just an extra senior pair of hands on a web app or mobile app development project. ☎️ Feel free to contact me here anytime. ---------------------------------------------------------------------------------------------------------------------- Tech Tags: Redshift Knex Playwright SQS Kinesis Puppeteer MinIO Server Sent Events NATS Meilisearch Microservices architecture CockroachDB JWT Passport.js Apollo Server Firebase TypeORM Mongoose MemoryDB Cache-Manager SendGrid AWS S3 CloudFront RESTful APIs Linter Gateway AWS AJW (validation) SMTP nodemailer Axios Slack API .NET 7 Core C#11 RabbitMQ.client Automapper classNames Redux-toolkit RTK Query AWS SES Xstate ERC-1155 stack developer react html css javascript react developer full stack developer web developer can't do wordpress developer mobile app developer full stack developer python developer full stack developer net full stack wordpress full stack full stack developer react full stake developer Full Stack web developer full stack web developer front end web developer web developer wordpress web app developer shopify web developer full stack web developer back end developer node.js full stack developer react node developer react

Looking for a 𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 who can ship production-grade SaaS and AI integrations on time? You're in the right spot. 🏆 𝟭𝟬+ years as a Full Stack Developer (ex-Microsoft Bing, Princeton CS) 📊 $𝟮𝟬𝟬𝗞+ earned on Upwork across 𝟮𝟴 Full Stack Developer projects 🎯 Top Rated Plus with 𝟭𝟬𝟬% Job Success Score ⚡ 𝟲𝟬+ production SaaS and AI integration builds as lead Full Stack Developer ✅ Full Stack Developer for React, TypeScript, Node.js, Python, FastAPI 💼 Ubiquify Digital LLC (Austin, TX) | Full Stack Developer with Princeton CS ⭐⭐⭐⭐⭐ 𝑨𝒘𝒂𝒊𝒔 𝒂𝒏𝒅 𝒕𝒉𝒆 𝒕𝒆𝒂𝒎 𝒅𝒆𝒍𝒊𝒗𝒆𝒓𝒆𝒅 𝒂 𝒄𝒐𝒎𝒑𝒍𝒆𝒙 𝑭𝒖𝒍𝒍 𝑺𝒕𝒂𝒄𝒌 𝑫𝒆𝒗𝒆𝒍𝒐𝒑𝒆𝒓 𝒃𝒖𝒊𝒍𝒅 𝒖𝒏𝒅𝒆𝒓 𝒂 𝒕𝒊𝒈𝒉𝒕 𝒕𝒊𝒎𝒆𝒍𝒊𝒏𝒆 𝒘𝒊𝒕𝒉 𝒄𝒍𝒆𝒂𝒏 𝒄𝒐𝒅𝒆, 𝒔𝒕𝒓𝒐𝒏𝒈 𝒂𝒓𝒄𝒉𝒊𝒕𝒆𝒄𝒕𝒖𝒓𝒆, 𝒂𝒏𝒅 𝒓𝒆𝒔𝒑𝒐𝒏𝒔𝒊𝒗𝒆 𝒄𝒐𝒎𝒎𝒖𝒏𝒊𝒄𝒂𝒕𝒊𝒐𝒏 𝒕𝒉𝒓𝒐𝒖𝒈𝒉𝒐𝒖𝒕. 𝑾𝒐𝒖𝒍𝒅 𝒉𝒊𝒓𝒆 𝒂𝒈𝒂𝒊𝒏 𝒘𝒊𝒕𝒉𝒐𝒖𝒕 𝒉𝒆𝒔𝒊𝒕𝒂𝒕𝒊𝒐𝒏 𝒇𝒐𝒓 𝒂𝒏𝒚 𝑭𝒖𝒍𝒍 𝑺𝒕𝒂𝒄𝒌 𝒑𝒓𝒐𝒋𝒆𝒄𝒕. (Marcus T., Upwork, 2025) As a Senior Full Stack Developer with a Princeton Computer Science background and 4 years as a Microsoft Bing engineer, I build production SaaS platforms and AI integrations for founders who need senior-level Full Stack Developer execution. My team and I work at the intersection of Full Stack Development and AI: React and TypeScript frontends, Python and Node.js backends, and AI layers built to hold up under real load. Full Stack Developer-first, agency-grade. 🔶 𝗖𝗥𝗘 𝗗𝘂𝗲 𝗗𝗶𝗹𝗶𝗴𝗲𝗻𝗰𝗲 𝗣𝗹𝗮𝘁𝗳𝗼𝗿𝗺 (𝟯𝟮𝟱 𝗵𝗿𝘀): Lead Full Stack Developer on a commercial real-estate data platform for a US fund. B2B SaaS, complex data model, React, TypeScript, Python. 🔶 𝗥𝗲𝗮𝗰𝘁 𝗧𝘆𝗽𝗲𝗦𝗰𝗿𝗶𝗽𝘁 𝗦𝗮𝗮𝗦 ($𝟲𝟮𝗞, 𝟮,𝟬𝟳𝟴 𝗵𝗿𝘀): Full Stack Developer from zero to shipping for a production SaaS build. Full-stack React, TypeScript, Node.js. 🔶 𝗗𝗿𝘆𝗷𝗲𝗰𝘁 𝗥𝗲𝗽𝗼𝗿𝘁𝗶𝗻𝗴 𝗧𝗼𝗼𝗹 (𝟰𝟴𝟭 𝗵𝗿𝘀): Full Stack Developer build of an internal ops dashboard with reporting, data pipelines, and automation. 🔶 𝗠𝘂𝗹𝘁𝗶-𝗣𝗿𝗼𝗳𝗶𝗹𝗲 𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸 𝗦𝗮𝗮𝗦 𝗕𝘂𝗶𝗹𝗱𝘀: Full Stack Developer on multiple AI integration, workflow automation, and SaaS MVPs. 🚀 𝗦𝗮𝗮𝗦 & 𝗔𝗜 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻 ✔️ Full Stack Developer for AI integration, agentic workflows, and LLM features ✔️ OpenAI API, Claude API, RAG systems with prompt reliability and context management ✔️ Full Stack Developer on FastAPI, Node.js, Django, Next.js, and PostgreSQL 🔄 𝗪𝗼𝗿𝗸𝗳𝗹𝗼𝘄 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻 & 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻𝘀 ✔️ Full Stack Developer for n8n, Zapier, and Make . com at scale ✔️ Full Stack Developer integrations: CRMs, databases, payments, email, AI services ✔️ Idempotent workflows, retry logic, and data consistency across systems ⚡ 𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿: 𝗣𝗿𝗼𝗱𝘂𝗰𝘁 𝗕𝘂𝗶𝗹𝗱𝘀 𝗳𝗿𝗼𝗺 𝗭𝗲𝗿𝗼 𝘁𝗼 𝗣𝗿𝗼𝗱𝘂𝗰𝘁𝗶𝗼𝗻 ✔️ Full Stack Developer on React, TypeScript, Vue.js, Python, MVP to production ✔️ Multi-tenant architecture, auth, permissions, API design ✔️ DevOps and deployment on AWS, Vercel, Railway, and GCP 🎯 𝗪𝗵𝗼 𝗜 𝘄𝗼𝗿𝗸 𝘄𝗶𝘁𝗵 𝗮𝘀 𝗮 𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿: 🔹 Founders building Full Stack SaaS products from scratch 🔹 Agencies needing Full Stack Developer capacity on complex builds 🔹 Series A to C startups scaling production systems 🔹 Operators replacing broken workflows with a senior Full Stack Developer 𝗡𝗼𝘁 𝗮 𝗳𝗶𝘁 𝗶𝗳: you need a solo Full Stack Developer for a simple landing page, WordPress theme work, or crypto/trading systems. 💡 𝗛𝗼𝘄 𝘄𝗲 𝘄𝗼𝗿𝗸: ✔️ Day 1-3: Discovery call, architecture doc, and scoped milestones from your Full Stack Developer team ✔️ Week 1: First working increment deployed to staging ✔️ Ongoing: Weekly demos, async updates, documented handoffs from the Full Stack Developer lead ✔️ What you get: Production Full Stack Developer output, full source, handoff docs, direct team access 📞 𝗥𝗲𝗮𝗱𝘆 𝘁𝗼 𝗺𝗼𝘃𝗲? Send the job details and we will reply with a scoped plan within 24 hours. Need a Full Stack Developer who ships? Let's talk.

🥇𝐌𝐕𝐏 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 | 𝐅𝐮𝐥𝐥 𝐂𝐲𝐜𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 | 𝐀𝐈 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧 𝐄𝐱𝐩𝐞𝐫𝐭 As a 𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 mobile app developer, I have developed 𝟓𝟎+ 𝐟𝐮𝐥𝐥-𝐜𝐲𝐜𝐥𝐞 𝐦𝐨𝐛𝐢𝐥𝐞 𝐚𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬 and contributed to 100+ mobile app development projects. I’ve guided brands to build their first MVP and scale them to high-revenue applications that have thousands of downloads. 👉 Invite me to your job post to 𝐠𝐞𝐭 𝐚 𝐟𝐫𝐞𝐞 𝐚𝐫𝐜𝐡𝐢𝐭𝐞𝐜𝐭𝐮𝐫𝐞 𝐩𝐥𝐚𝐧 customised for YOUR project. I work extensively in Mobile App Development that empowers startups, enterprises, and entrepreneurs to connect with their users effectively. I have strong experience in React Native and Flutter app development. 𝐖𝐡𝐚𝐭 𝐈 𝐎𝐟𝐟𝐞𝐫 𝐢𝐧 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭: 🔹Full cycle custom mobile application development based on your requirements 🔹Design and develop admin dashboards/CRM to control the platform 🔹Integrate thirt party API’s like Payments, escrow, Google Maps, and many more 🔹AI software development and Integrations to make the app smart 🔹Service app, ecommerce/marketplace app, dating app, delivery app, fintech app development expert 🔹MVP Development, Proof of Concept (POC), UI UX design 𝐓𝐞𝐜𝐡 𝐒𝐭𝐚𝐜𝐤 𝐈 𝐔𝐬𝐞: 🔹 Hybrid cross-platform app development: Flutter & React Native for faster and cost-effective delivery. 🔹Frontend Development: ReactJS, NextJS 🔹Backend Development: NodeJS, ExpressJS, PHP, Laravel, Python, Django/Flask 🔹Database: MongoDB, Firebase, MySQL, PostgreSQL 🔹 UI UX design: Figma, Canva, Adobe XD 📩𝐌𝐞𝐬𝐬𝐚𝐠𝐞 𝐦𝐞 𝐰𝐢𝐭𝐡 𝐲𝐨𝐮𝐫 𝐫𝐞𝐪𝐮𝐢𝐫𝐞𝐦𝐞𝐧𝐭𝐬, 𝐚𝐧𝐝 𝐈’𝐥𝐥 𝐬𝐮𝐠𝐠𝐞𝐬𝐭 𝐭𝐡𝐞 𝐛𝐞𝐬𝐭 𝐚𝐩𝐩𝐫𝐨𝐚𝐜𝐡 𝐟𝐨𝐫 𝐲𝐨𝐮𝐫 𝐛𝐮𝐬𝐢𝐧𝐞𝐬𝐬. ✅ 𝐅𝐥𝐮𝐭𝐭𝐞𝐫 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 𝐀𝐝𝐯𝐚𝐧𝐭𝐚𝐠𝐞 As a dedicated Flutter App Developer, I deliver apps that run on both iOS & Android with a single codebase. This reduces cost, speeds up launch, and ensures a native-like feel. My Mobile App Development expertise guarantees apps that are faster, more scalable, and budget-friendly. Choosing a Mobile App Developer with cross-platform knowledge ensures long-term success. 🚀 𝐖𝐡𝐲 𝐖𝐨𝐫𝐤 𝐖𝐢𝐭𝐡 𝐌𝐞? 🔹 End-to-end expertise as a Mobile App Developer(front-end + back-end + UI/UX). 🔹 Proven track record in Mobile App Development across industries. 🔹 AI expertise to make sure the development is future-ready. 🔹 Fluent English communication and on-time delivery from an experienced Mobile App Developer. 🔹Long-term post-project support 📅 How to Get Started 📩 Send me a message about your project. Let’s hop on a quick call to explore your goals. ✅ Together, we’ll craft a powerful solution with my Mobile App Development expertise. 👉 𝐂𝐥𝐢𝐜𝐤 “𝐈𝐧𝐯𝐢𝐭𝐞 𝐭𝐨 𝐉𝐨𝐛” 𝐚𝐧𝐝 𝐥𝐞𝐭’𝐬 𝐛𝐮𝐢𝐥𝐝 𝐲𝐨𝐮𝐫 𝐧𝐞𝐱𝐭 𝐬𝐮𝐜𝐜𝐞𝐬𝐬 𝐬𝐭𝐨𝐫𝐲 𝐰𝐢𝐭𝐡 𝐚 𝐩𝐫𝐨𝐯𝐞𝐧 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫.