Struggling with Dataverse API thresholds, complex Power Pages security roles, or integrating third-party systems into your CRM? Low-code setups often break at scale. As a Senior Dynamics 365 CE & Power Platform Architect with a technical .NET development foundation, I specialize in building the high-complexity, pro-code solutions that outlast basic configurations. With over 6 years of experience architecting enterprise ecosystems, I bridge the gap between business logic and scalable cloud architecture. Whether you need a secure customer-facing portal or a custom C# plugin to handle heavy automation, I deliver production-ready, fully documented solutions. Core Technical Expertise: Dynamics 365 CRM/CE: Advanced customization, custom C# plugins, workflow extensions, and end-to-end Lead-to-Cash process automation. Power Pages (Portals): Enterprise-grade B2B/B2C portals with custom UI/UX using Liquid, JavaScript, strict Web Roles isolation, and secure Table Permissions. Power Apps: High-adoption Canvas and Model-Driven applications designed for complex operational needs (field operations, inventory, and offline-sync). Integrations & Dataverse: Cloud flows, custom REST/SOAP API integrations (QuickBooks, Jira, ERPs), and high-performance Dataverse schema design built to bypass standard query throttling limits.

🏆 12+ Years in Software Delivery | 246 Projects Delivered | 98% Client Satisfaction 🔐 GDPR & HIPAA | ISO 27001 Delivery Standards | Fortune 500 Experience Hi 👋 I'm Ostap, Senior Full Stack Developer and Team Lead representing a delivery team building SaaS Platform, Web Platform, and Web App / Web Application products across Healthcare, FinTech, AI, IoT, Logistics, Construction, Retail, Travel, and Enterprise. As a Full Stack Developer, I lead product delivery across architecture, frontend systems, backend systems, automation, cloud infrastructure, AI workflows, and mobile ecosystems, delivered 246 projects, helped platforms scale to millions of users. AI has fundamentally changed how I work. Claude Code is my daily driver. I use agentic orchestration patterns across the full development lifecycle, from planning and code generation to testing and review. As a React Developer, Frontend Developer, and Next.js Developer, I build dashboards, portals, CRM systems, admin panels, analytics systems, and Web App products used by 1,000+ businesses. As a Node.js Developer and Backend Developer, I deliver API Integration, REST API, authentication, RBAC, payment systems, automation workflows, Firebase infrastructure, and systems processing 50,000+ daily actions. Strong as: 🚀 Full Stack Developer with React, Node.js, Next.js, TypeScript, JavaScript, REST API, PostgreSQL, MongoDB, MySQL, AWS, Docker, Kubernetes - Automation reduced workflows from 30 sec to 3 sec. 🚀 React Developer / Frontend Developer / Next.js Developer: React, Next.js, TypeScript, JavaScript, HTML5, CSS3, Vue.js, Bootstrap, UX/UI, Landing Pages, Web Design - Modernization reduced maintenance costs by up to 50%. 🚀 Node.js Developer / Backend Developer: Node.js, REST API, API Integration, RBAC, authentication, payments, data processing, automation, Firebase, cloud-native architecture - Monitoring accuracy improved by 45% with 40% less alert noise. 🚀 Python Developer: AI Implementation, OpenAI, Claude, Llama, LLM workflows, analytics, monitoring, automation systems - Analytics systems process 35,000+ automated records. 🚀 PHP Developer / WordPress Developer: PHP, WordPress, CMS platforms, business websites, portals, integrations, and scalable content systems. 🚀 Mobile Developer - Mobile ecosystems reached 280,000+ users, 323,000+ downloads, and 82 countries. ✔ Full Stack Developer delivery for SaaS Platform and Web Platform products — 246 projects from MVP to scalable production. ✔ React Developer delivery for dashboards, portals, CRM systems, marketplaces, and analytics platforms supporting 1,000+ businesses. ✔ Frontend Developer execution focused on maintainable UI, responsive Web App experiences, and long-term product growth. ✔ Next.js Developer delivery for production-ready SaaS interfaces, landing pages, customer portals, and Web Application products. ✔ Node.js Developer delivery for backend architecture, REST API, API Integration, payment workflows, RBAC, authentication, and automation systems. ✔ Backend Developer ownership for scalable databases, cloud infrastructure, data processing, monitoring systems, and enterprise integrations. ✔ Full Stack Developer + React Developer collaboration for MVP launches in as little as 3 months and platforms supporting millions of users. ✔ Frontend Developer + Next.js Developer delivery for modern Web Platform experiences across Healthcare, FinTech, AI, IoT, Construction, Logistics, Retail, and Travel. ✔ Node.js Developer + Backend Developer delivery for automation systems generating $100,000+ annual operational savings. Need a Full Stack Developer to own architecture, delivery, and roadmap execution? I can lead the product side while our engineering team scales implementation. Need a React Developer, Frontend Developer, or Nextjs Developer to improve your SaaS Platform UI, dashboards, portals, or Web App experience? We can add focused frontend capacity without slowing delivery. Need a Nodejs Developer or Backend Developer to stabilize APIs, automation, integrations, payments, or cloud infrastructure? We can strengthen the backend while keeping product delivery moving. For AI, automation, and data-heavy work, our team can add a Python Developer experienced in AI workflows, analytics systems, and automation pipelines processing 35,000+ records. For CMS, legacy modernization, and business platforms, our team can add a PHP Developer and WordPress Developer for websites, portals, integrations, and content-driven ecosystems. For real-time apps and mobile-connected products, we can add Firebase Developer capacity for authentication, notifications, analytics, and cloud-connected infrastructure. Need extra capacity? Full Stack Developer, React Developer, Frontend Developer, Nextjs Developer, Nodejs Developer, Backend Developer — one team, measurable delivery. 📩 Send an Invite, or contact in DM on Upwork — let's discuss your SaaS, Web Platform, MVP, AI Product, Mobile App, or Web App.

Greetings for the day! I have 17+ years of experience in web design and development. I am a full-time freelancer and can start work immediately. Also experience in UI development (HTMl5, CSS3, Bootstrap, mobile responsive website), Like WordPress, React, Shopify, PHP, MySQL, JavaScript, jQuery, and AJAX, Photoshop, Photo Editing, Video Editing, Data Entry. Softwares : Milk Dairy Software Stock inventory software Coaching Class Management School/College Management Job Consultancy If you need an experienced developer who offers fluent communication, beautiful design & optimized code, premium after-service, & on time and to budget, then I am a suitable choice for you. If you need something based on solely ONE of the above criteria, then I am happy if you decide to give another freelancer a chance. Just bookmark me and come back in case the selected freelancer can't satisfy your demands. Looking forward to working with you. Thank You

I'm a full-stack developer with 10 years of experience building web applications that solve real business problems. Over the years I've worked with startups, agencies, and established businesses, helping turn ideas into reliable products that people actually use. My work spans both modern web development and AI engineering, helping businesses build intelligent applications powered by Large Language Models (LLMs), Retrieval-Augmented Generation (RAG), and AI agents. I enjoy owning the entire development process—from designing scalable backend systems and APIs to building responsive frontend applications and deploying production-ready solutions. 🚀 What I Can Help You Build Modern web applications with React, Next.js, Node.js, and TypeScript REST APIs, scalable backend systems, and database design AI-powered applications using Large Language Models (LLMs) Retrieval-Augmented Generation (RAG) pipelines over proprietary data AI agents and multi-step workflows for business automation LangChain-based applications and LLM orchestration Fine-tuning open-source models for domain-specific use cases AI integrations that fit naturally into existing products and business workflows I believe good software should be easy to maintain, easy to extend, and built with the end user in mind. My focus is always on writing clean, maintainable code and delivering production-ready solutions. 🛠️ Tech Stack 💻 Frontend React, Next.js, TypeScript, JavaScript, Tailwind CSS, Redux, Zustand ⚙️ Backend Node.js, Express.js 🗄️ Databases & ORMs PostgreSQL, MySQL, MongoDB, Prisma 🤖 AI Engineering LLMs, RAG Pipelines, LangChain, Agentic AI, Prompt Engineering, Model Fine-tuning, AI Workflow Orchestration 🔌 Tools & Integrations Stripe, Firebase, Google Analytics (GA4), Sentry If you're looking for a developer who can build modern web applications, integrate AI into existing products, or take an idea from concept to production, I'd be happy to discuss your project.

I’m a Full Stack Developer with 12+ years of experience building scalable, high-performance web applications, SaaS platforms, and complex business systems. I specialize in turning complex ideas into efficient, production-ready solutions, with a strong focus on performance, usability, and long-term scalability. 💡Over the years, I’ve successfully delivered solutions across: ✔eCommerce platforms ✔B2B portals ✔Finance management systems ✔SaaS products ✔Custom enterprise applications 💡What I Bring to Your Project ✔ Ability to translate business requirements into scalable technical solutions ✔ Strong experience with system architecture & database design ✔ Clean, maintainable, and performance-driven code ✔ End-to-end ownership from planning to deployment ✔ Clear communication and long-term collaboration mindset 💡My Technical Expertise includes but not limited to ✔ Backend & Architecture: Laravel, PHP (MVC Architecture, ORM), Node.js, RESTful API Development, Microservices Architecture ✔ Frontend Development: React.js, Vue.js, Responsive UI/UX development, SPA (Single Page Applications) ✔ Mobile Development: React Native ✔ Databases: MySQL, MongoDB, PostgreSQL, MariaDB ✔Cloud & DevOps: AWS (EC2, S3, RDS, Lambda), Google Cloud Platform, Digital Ocean, Docker (Containerization), CI/CD Pipelines ✔Tools & Workflow: Git (GitHub, GitLab, Bitbucket), JIRA, Trello, Basecamp, Confluence, Agile (Scrum & Kanban) ✔Additional Skills: Blockchain (Ethereum, Corda), Algorithm Design & Optimization 💡My approach for project development ✔I follow a structured and efficient development approach: ✔Understand your business goals first ✔Break down requirements into actionable tasks ✔Build scalable and clean architecture ✔Deliver in milestones with continuous feedback ✔Ensure testing, optimization, and smooth deployment 💡Why Clients Choose Me ✔ Strong commitment to project completion ✔ Ability to handle complex problem-solving ✔ Focus on long-term maintainability ✔ Proactive communication and updates ✔ Quick adaptability to new technologies I’m passionate about building software that solves real-world problems and creates value. Whether you need a full SaaS platform, a custom web app, or system optimization, I’m ready to help. Let’s discuss your project and bring your ideas to life.

Hey!👋 I am an Experienced Full-Stack Web & Desktop Architect with 1️⃣5️⃣+ years of track record, offering comprehensive solutions for websites and desktop applications. Proficient in both frontend and backend technologies, ensuring seamless, efficient, and scalable solutions. 🗝Services: - Website Development - E-Commerce Development - Responsive Web Design - UI/UX Design - Desktop Application Development - Web Application Development - Website Maintenance and Support - Landing Page Design - Website Redesign - Single Page Application (SPA) Development 💥Skills: - HTML, - CSS, - JavaScript, - React, - Nuxt.js, - Vue.js, - TypeScript, - Electron.js, - Next.js, - jQuery, - Figma, - Adobe Illustrator, - Sketch, - Adobe Photoshop, - Framer, - Testing and Debugging Utilizing modern frameworks and technologies to deliver high-quality, user-friendly, and secure digital products that meet your specific business needs. 📲 I am committed to delivering high-quality solutions. So, contact me to start your project ASAP! Hashtags: #WebDevelopment #WebDesign #UIDesign #UXDesign #ResponsiveDesign #APIIntegration #CRMSystems #ERPSystems #WebsiteDevelopment #WebApplicationDevelopment #FrontendDevelopment #BackendDevelopment #JavaScriptDevelopment #VueJS #ReactJS #NodeJS #PHP #Python #DatabaseManagement

I am Sa'id, A self motivated software engineer with the strength of overcoming challenges, learning new skills and encourage growth in those around me. I enjoy writing code. I am far too eager to solve problems, particularly those of others. I am an expert in web development. I specialize in both frontend and backend in the field of web development, my main passion and joy is to deliver usable quality product. My skills: * HTML, CSS 3, BOOTSRAP , PHP, LARAVEL, MYSQL, SQL, JAVASCRIPT, VUE.JS, NUXT.JS * Building from scratch custom responsive Website. * WooCommerce - installation, integrating the theme, integrating payment methods, customizing the front end and back end, and programming more solutions * Speed optimization / SEO optimization / Security, * GitHub, Visual Website Optimizer (VWO). * Import/Export (MySQL database Large Data) My Experience * Large Data Migration (migrating data from different database to another ) * 6+ years of experience * Worked with a start-up company as a Backend Developer

Full-stack apps and n8n AI automation systems shipped to the App Store, running in production, saving businesses 15–30 hours a week. No demos. No prototypes. Production-grade systems built on React Native, Supabase, Laravel, and n8n. ───────────────────────────── 📱 REACT NATIVE MOBILE DEVELOPMENT I build cross-platform iOS and Android apps with React Native and Expo - TypeScript, clean architecture, and real device performance from day one. React Native with Expo Router, Expo SDK, React Navigation, Zustand, and React Query is my standard stack. I handle everything from component architecture to App Store and Google Play submission. Backend options I wire into React Native apps: Supabase - Supabase Auth, Supabase Realtime, Supabase Storage, Row-Level Security, Edge Functions, and Postgres full-text search Laravel - Laravel Sanctum for React Native auth, Laravel API backend with REST or GraphQL, Laravel Queues for background jobs Firebase - for teams already on the Google ecosystem React Native features I ship regularly: push notifications (Expo Notifications), offline-first sync, biometric authentication, deep linking, in-app purchases (RevenueCat), Stripe payments, and OTA updates via EAS Update. Most clients find me after a React Native developer left them with an Expo app that crashes on Android, or a bare React Native project nobody else wants to touch. I fix those too. ⚙️ N8N AUTOMATION & AI AUTOMATION WORKFLOWS I design and deploy n8n automation systems that eliminate manual work permanently. n8n self-hosted or n8n Cloud. I set it up, secure it, and build workflows your team can actually maintain. What I automate with n8n: Lead capture → CRM sync → follow-up sequences AI-powered document processing with OpenAI and Claude AI Webhook-triggered Laravel or Supabase backend actions Content generation and multi-channel distribution Invoice creation, approval chains, and payment reconciliation API-to-API pipelines between tools that were never meant to talk n8n integrations I use constantly: OpenAI, Claude AI (Anthropic), Supabase, Laravel webhooks, Airtable, Google Sheets, Slack, HubSpot, Notion, Stripe, Twilio, Mailchimp, Typeform, and custom HTTP nodes for anything else. If you've maxed out Zapier or Make (Integromat), n8n gives you self-hosted control, unlimited executions, and the logic complexity those tools can't handle. Clients typically reclaim 15–30 hours per week after their first n8n deployment. 🗄️ SUPABASE & LARAVEL BACKEND DEVELOPMENT Supabase: Supabase Postgres schema design, Row-Level Security policies, Supabase Auth (magic link, OAuth, phone OTP), Supabase Edge Functions (Deno), Supabase Realtime subscriptions, Supabase Storage with CDN, and pgvector for AI embeddings. I take Lovable or Bolt-generated MVPs and replace the toy backend with a Supabase setup that can actually handle production traffic. Laravel: Laravel REST API development, Laravel Sanctum and Laravel Passport authentication, Eloquent ORM, Laravel Queues with Redis, Laravel Horizon, Laravel Nova admin panels, Laravel Livewire, Inertia.js, and full Laravel deployment on Forge + DigitalOcean or Laravel Vapor (serverless). Laravel is my choice when a project needs complex business logic, multi-tenancy, or a robust admin layer that Supabase Edge Functions alone can't cover. Full-stack combinations I ship: React Native + Supabase + n8n React Native + Laravel API + n8n automation Next.js + Supabase + Laravel microservice Expo + Laravel Sanctum + Supabase Storage 🤖 AI INTEGRATION & AI AGENT DEVELOPMENT I integrate AI into React Native apps, Laravel backends, and n8n automation stacks not as a feature demo, but as a working system. AI services and frameworks I work with: OpenAI API - GPT-4o, Assistants API, function calling, fine-tuning Claude AI (Anthropic) - Claude 3.5 Sonnet for complex reasoning and document analysis LangChain -RAG pipelines, vector search, memory, and agent chains pgvector + Supabase - semantic search and embeddings stored directly in your Supabase Postgres database n8n AI nodes , AI automation workflows with LLM-powered decision branching AI systems I build: RAG document Q&A, AI lead qualification inside n8n, GPT-powered Laravel admin tools, Claude AI chat assistants embedded in React Native apps, and AI agents that trigger real actions not just generate text. ───────────────────────────── WHO I WORK WITH ✅ Founders who need a React Native app built right the first time Supabase or Laravel backend included ✅ SaaS teams adding React Native mobile to an existing Laravel or Supabase web product ✅ Businesses that want n8n automation to replace 15–30 hours of weekly manual work ✅ Startups with a Lovable or Bolt MVP that needs a real Supabase schema and RLS before launch ✅ Teams integrating OpenAI or Claude AI into their React Native app or n8n workflow ✅ Laravel shops that need React Native mobile added without switching their entire backend Message me with what you're building. Let's connect!

Skills : PHP, Ajax, Java, MySQL, XHTML CSS, XML, Graphics designer, javascript developer React JS + redux , (Node JS + Express JS), Database (Mysql, Postgresql, MongoDB) Experience : 5 years 1. As a WEB Designer 2. As a Logos, Illustrations, Banners and Brochures designer 3. As a server side programmer including (PHP, Ajax, Java, MySQL, XHTML CSS, XML, JS, NodeJS, ExpressJs, React JS) 4. As a Backend programmer related to API implementation with database like postgresql, mysql , mongoDB Interest : 1. To work as a designer 2. To work as a frontend developer 3. To work in javascript, Jquery, PHP, Ajax as a javascript developer 4. To work as a backend developer lncluding javascript framework,/technology (NodeJS, Express JS)

As a programmer, I have accumulated good skills of mobile app & web development, especially, iOS and Android for about 7 years. Originally, I used native app tools like xcode and andriod studio. But recently, I use Ionic/PhoneGap/Cordova as well. I will dedicate myself to clients and build a good friendships with them. My skills and experiences are the followings: 1. Programming Language - PHP - JavaScript, Jquery, Angular JS - Titanium - MySQL, Several Script Languages 2. Skill & experiences relate to Production - Native app development for iOS & Android by PhoneGap/Cordova. - Web back-end, Web service - Integration of Facebook, Twitter, Pinterest, Instagram, Google+ - Google Map service, Foursquare, Location-Based Services - CoreData, CoreAnimation, Core Graphic - OpenGLES, OpenAL - Photo & Video Filtering, AVFoundation - Github, Bit Bucket, SVN, Basecamp - Cocos2d/3d, Unity3d - ARToolkit, Vuforia - Google Analytics, Adjust IO, Flurry SDK - Audo/Video Streaming & Chat using Streaming Server and in-app decoder (like ffmpeg, mplayer)