Hi, I'm Sagar, a passionate Full-Stack Developer, AI Solutions Architect, and UI/UX Designer with over 10+ years of hands-on experience delivering high-quality, scalable, and performance-driven digital solutions for clients across the globe. I specialize in end-to-end web, mobile, and AI-powered application development, working with startups, agencies, and enterprise-level businesses to bring their digital ideas to life with clean code, smart architecture, intelligent automation, and beautiful design. 🔧 My Technical Toolbox: ⚛️ React.js / Frontend Engineering - Responsive, interactive UI using React.js + Tailwind CSS / Material UI - Next.js for server-side rendering (SSR) and static site generation (SSG) - API integration (REST, GraphQL), custom hooks, and state management with Redux Toolkit - UI animation and transitions for an enhanced user experience 🖥️ Node.js / Backend Development - Scalable REST APIs, authentication systems (JWT, OAuth) - MongoDB, PostgreSQL, and MySQL database design and optimization - Real-time features using WebSockets and Socket.IO - Secure deployment, CI/CD, and API documentation 🤖 AI & Machine Learning Integration - AI-powered chatbots, recommendation engines, and intelligent search - Integration of pre-trained AI/ML APIs (OpenAI, Google Cloud AI, AWS AI Services) - Predictive analytics dashboards and business intelligence solutions - Data automation, sentiment analysis, and image recognition applications 🐍 Python Development - Scripting, automation, data scraping, and backend logic - FastAPI and Flask for lightweight, secure web services - Integration with machine learning models and AI-powered APIs - Custom AI tool development for niche business cases 📊 ERPNext Customization & Integration - Full ERPNext setup & module customization (HR, Accounting, CRM, Inventory) - Integration with third-party services like payment gateways, SMS, email - Custom script writing (client/server-side), reporting, and workflow automation - System upgrades, performance tuning, and role-based access configuration 📱 Mobile App Development - Cross-platform app development using React Native or Flutter - Real-time chat, push notifications, Firebase/Auth integrations - AI-enhanced app features like voice commands, image recognition, and smart notifications - App Store / Play Store publishing & version management 🌐 WordPress Development (Advanced) - Custom themes and plugin development tailored to your business logic - WooCommerce integration, payment gateways, and multi-vendor setups - Headless WordPress with React/Next.js for lightning-fast performance - Site speed optimization, Core Web Vitals compliance, SEO setup 🎨 UI/UX Design That Converts - Wireframes, user journeys, and high-fidelity prototypes using Figma/Adobe XD - Clean, intuitive, and accessible interfaces tailored for your audience - Mobile-first and responsive design best practices --- 💡 Why Work With Me? ✅ Clear, honest communication ✅ Strong attention to detail and quality assurance ✅ Agile mindset – flexible and collaborative workflow ✅ Timely delivery with complete documentation ✅ Long-term relationship mindset – your success is my success Whether you need a full-stack AI-powered solution, a modern mobile app, a custom WordPress build, or a seamless ERP system, I'm ready to jump in and make it happen. 📩 Let’s talk! Share your vision with me, and I’ll help you turn it into a powerful, polished, and scalable digital product enhanced with smart AI capabilities.

⭐ Top-rated Web/Mobile App and Websites Development service provider with extensive experience of 8+ yrs and 100% Job Success Rate on Upwork. ⭐Technology Stack: Web: Angular, HTML, CSS, React JS, React JS, Vue JS, Jade, Next JS,Drupal, Liferay, CMS Portal, JBPM, Pega. -Backend: Java, Node JS, Spring Boot, Php, Magento, Laravel, Drupal, WordPress, Hibernate, .Net, Microservices, Architect, API, Python, NetFlix, Zuul routing, KAFKA Message system, MicroServices -Database: MongoDB, MySQL, SQL, Oracle, Postgres, NoSQL,Hadoop, Graph DB, Neo4J. -Mobile: React Native, Android Java, Kotlin, iOS Swift, Objective C, Flutter, Responsive Angular -DevOps: AWS, GCP, Azure, Digital Ocean, FreeCerts, SSH, Cloudflare, Domain.com, -Design: Figma, XD, Photoshop, Visual Communication,Web Design,Usability Testing,User Interface Design,Adobe XD,Mobile App Design,User Experience Design,iPhone UI Design,Adobe Photoshop -Content Writing: Whitepaper, Blog, Website content, Technical writing, Post, Legal agreement, proposal, bid proposal etc. - Web Project work: Angular, React JS, Vue JS 👉 Delivered projects that focused on: - Business domain: healthcare, insurance, social media, messenger, dating, fitness, on-demand delivery apps (Restaurant/Courier), ... - Startup: from validating the idea, research market, UI/UX design, development, and consulting for marketing approaches - SMEs that need to digitalize their business: website, mobile app, research, management dashboard, - Latest trends in technologies: AR, Healthcare, Flutter, TensorFlow, ReactJS, AngularJS, NodeJS . - Agile Methodologies and RESTful Web development. - Expertise in Amazon Web Services like S3, EC2, CDN (CloudFront) - Open Source Contribution to plugins like youtube_model and acts_as_redeemable available on Git. - Expertise in API Integration and SDK Development. Below are a few examples: + Payment Gateway API Integration (Stripe Connect, Apple Pay, PayPal, etc.) + Hardware Integration (Sonos, Profusion, Bluetooth, Roku, Chromecast, Apple TV, Bluetooth Beacon, MINIX, etc) + Messaging SDK and Chat API (Twilio etc) + Google Maps GeoLocation API Integration + Social Account Integration (Facebook, Google, Twitter, Instagram, etc.) Still learning, just drop me a note of your requirement and let me take it from there. 👉 Delivered projects that focused on: - Business domain: healthcare, insurance, social media, messenger, dating, fitness, on-demand delivery apps (Restaurant/Courier), ... - Startup: from validating the idea, research market, UI/UX design, development, and consulting for marketing approaches - SMEs that need to digitalize their business: website, mobile app, research, management dashboard, - Latest trends in technologies: AR, Healthcare, Flutter, TensorFlow, ReactJS, AngularJS, NodeJS ... - Agile Methodologies and RESTful Web development. - Expertise in Amazon Web Services like S3, EC2, CDN (CloudFront) - Open Source Contribution to plugins like youtube_model and acts_as_redeemable available on Git. - Expertise in API Integration and SDK Development. Below are a few examples: + Payment Gateway API Integration (Stripe Connect, Apple Pay, PayPal, etc.) + Hardware Integration (Sonos, Profusion, Bluetooth, Roku, Chromecast, Apple TV, Bluetooth Beacon, MINIX, etc) + Messaging SDK and Chat API (Twilio etc) + Google Maps GeoLocation API Integration + Social Account Integration (Facebook, Google, Twitter, Instagram, etc.) Still learning, just drop me a note of your requirement and let me take it from there.

📢STOP LOSING SLEEP OVER TECHNICAL DEBT, SLOW API RESPONSE TIMES, OR MESSY CODEBASES. 🔍 Are you a founder or an engineering lead looking to build a production-ready platform that scales from day one? I help businesses take complex ideas from concept to successful launch—without the drama, missed deadlines, or communication gaps. 💻 With over 6 years of experience, I bring "Big Tech" engineering standards to your startup or enterprise. Whether you need a rapid MVP built on the MERN/MEAN stack or a high-concurrency, microservices-driven system using GOLANG and ELIXIR, I don't just write code—I engineer scalable business solutions. 🤝 WHAT YOU GET WHEN WE PARTNER: ➡️ Transparent Delivery: Daily updates, short feedback loops, and clear communication. Zero "black box" development. ➡️ Clean, Maintainable Code: Heavy emphasis on proper database design, typed languages, and scalable architecture so your next team can easily understand and extend the product. ➡️ Post-Launch Reliability: I don't just ship and disappear. I provide runbooks, monitoring setups, and pragmatic post-launch support to ensure your platform stays stable. ➡️ Fast Start: Day-one environment setup and a small, risk-free first milestone to prove value immediately. 🚀 CORE SERVICES & USE CASES: 💠 Product Development: Custom SaaS Development, MVP Development, Web Application Development. 💠 System Architecture: Microservices, Event-Driven Systems, High-Concurrency Backends, Database Optimization. 💠 API Engineering: RESTful APIs, GraphQL, Third-Party API Integrations (Stripe, Twilio, OpenAI/LLMs, etc.). 💠 Real-Time Systems: WebSockets, Chat Applications, Live Tracking Dashboards. 🛠 MY TECHNICAL ARSENAL: ➡️ Full-Stack Ecosystems: MERN Stack, MEAN Stack ➡️ Backend & APIs: Node.js (Express.js, Nest.js), Golang (Gin, Fiber), Elixir (Phoenix, LiveView), Python. ➡️ Frontend Development: React.js, Next.js, Angular.js, TypeScript, JavaScript (ES6+), Tailwind CSS. ➡️ Databases: PostgreSQL, MongoDB, Redis, Elasticsearch. ➡️ DevOps & Cloud: AWS, GCP, Docker, Kubernetes, CI/CD Pipelines, Serverless Architecture. Skip the endless scrolling through unreliable profiles. Send me a message today with a brief overview of your project, and let’s outline a clear, actionable roadmap for your first milestone. ⌨ 𝗞𝗲𝘆 𝗪𝗼𝗿𝗱𝘀: Elixir, OTP, Beam, Go, Gin, Phoenix Framework, LiveView, Surface, Drab, Cowboy, Ecto, GraphQL, Nerves, GenServer, Supervisor, Task, Ecto, PostgreSQL, MySQL, MongoDB, Redis, Riak, Golang, Dart, Full-Stack Developer, ReactJS, TypeScript, JavaScript, jQuery, Angular, AWS, Google Cloud Platform, Docker, MEAN Stack, MERN Stack, Front-End Development, HTML5, CSS3, Bootstrap, Azure, DevOps, Kubernetes, WebSockets, SEO-Friendly Web Development, Cross-Platform Development, Next.js, Express.js, Vue.js, React.js development, React frameworks, Git, Tailwind CSS, SASS, SCSS, Gitlab, Gulp, Webpack, Figma, Responsive Design, Cross browser compatibility, Nuxt.js, GitHub, Elixir, Golang, Phoenix Framework, LiveView, Node.js, Gin, Nest.js, GraphQL, PostgreSQL, MongoDB, Redis, Kafka, RabbitMQ, AWS Lambda, Kubernetes, Terraform, AI Chatbots, Machine Learning, LLMs, NLP, OpenAI, FinTech, Healthcare AI, SaaS Development, API Development, DevOps, CI/CD, Docker, Cloud Computing, Microservices, WebSockets, Agile, React, Next.js, Vue.js, TypeScript, Tailwind CSS, Stripe, Twilio, AI Automation, Cloud Infrastructure, Serverless Computing.

Hello Dear, Thanks for checking my profile. 🔥 48 COMPLETED JOBS WITH ZERO NEGATIVE FEEDBACK ⭐️ Consistent 5 STAR REVIEWS & LONG-TERM CLIENT PARTNERSHIPS 🏆 100% Job Success Rate Want to make a website, web app, mobile app or fix bugs? I'm glad to provide you the solution. My service: - SaaS dashboards - Admin panels - CRM / ERP systems - Analytics platforms - Landing pages - Marketplaces - Internal tools - Client facing portals • Website design • Mobile App design • Figma/XD/PNG to React • Figma/XD/PNG to HTML • Figma/XD/PNG to React Native • React JS API development • Next/Nuxt JS development • NodeJs/MongoDB development • Website/Mobile App Bug Fix Technology I am using: • HTML5 • CSS3 • SASS • Bootstrap • Tailwind CSS • Material UI • Ant Design • Chakra UI • JavaScript • TypeScript • React JS • Next JS • NodeJs - ExpressJs - NestJs • MongoDB • React Native and more... Tools I am using • Figma • Adobe XD • Sketch • Zeplin - Cursor AI - Claude AI - Codex • Visual Studio Code - Antigravity • Git and more... Please feel free to contact me to discuss your idea

Stop rebuilding your product every 6 months. I help startups and growing companies build scalable SaaS platforms, real-time systems, and high-converting payment flows that are designed for growth from day one. If your product involves APIs, dashboards, payments, integrations, or real-time features — I've built it in production. What I Help You Achieve - Increase payment completion with Apple Pay, Google Pay, Stripe optimization - Reduce operational costs through workflow automation - Launch real-time features with WebSockets and Firebase - Scale systems without expensive rewrites - Ship MVPs to production in weeks, not months Why Clients Hire Me Most developers deliver features. I deliver systems designed for: 1. Predictable scaling 2. Fast feature development 3. Maintainability 4. Business impact So you don't rebuild in 6 months. Real Results QR-Based Restaurant Platform Built full-stack ordering system (Node.js, PostgreSQL, React, Firebase, AWS) - 45% reduction in staff workload - 60% faster ordering flow - 30% increase in payment completion Real-Time Scoring Mobile App Developed React Native app with live WebSocket updates - 40% increase in user retention - 50% faster onboarding via QR - Eliminated manual operational errors Trading Platform Backend Engineered prop trading backend with Stripe + crypto payments - 50% increase in trading activity after gamification - 99.9% payment uptime - Secure payment infrastructure What I Build Most Often - SaaS platforms (multi-tenant architecture) - Backend APIs (Node.js, Express, TypeScript, REST, GraphQL) - Payment integrations (Stripe, Apple Pay, Google Pay, crypto) - Admin dashboards (React, Next.js, Tailwind) - Mobile apps (React Native) - Real-time systems Tech Stack Backend Node.js, Express, NestJS, TypeScript PostgreSQL, MongoDB, Redis REST APIs, GraphQL, WebSockets Frontend & Mobile React, Next.js, React Native Tailwind, Material-UI, Shadcn Payments & Infrastructure Stripe, Apple Pay, Google Pay, ForumPay AWS (EC2, RDS, S3), Docker, CI/CD How I Work I clarify business goals before writing code, design systems for future growth, and ship production-ready features with proper security and validation. Clear communication, predictable delivery, no messy rewrites later. If you need someone who can own both architecture and implementation — backend, frontend, mobile, payments, infrastructure — let's discuss your project. Message me with your product idea or current challenge, and I'll outline the best technical approach.

⭐ Top Rated | 100% Job Success | 10+ Years of Experience Looking for a Full Stack Developer who can build scalable web applications, modern SaaS platforms, and AI-powered solutions from concept to deployment? I specialize in Laravel, Vue.js, PHP, JavaScript, MySQL, and AI integrations, helping businesses develop secure, high-performance applications that solve real business problems. From backend architecture and API development to responsive frontend interfaces and AI automation, I handle the complete development lifecycle. 𝗠𝘆 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 🚀 Full Stack Development • Laravel • Vue.js • PHP • JavaScript • MySQL & PostgreSQL • REST APIs • AWS & Cloud Deployment 🚀 SaaS Application Development • Multi-Tenant SaaS Platforms • CRM & ERP Systems • Recruitment Platforms • Membership Portals • Custom Business Applications 🚀 AI-Powered Solutions • OpenAI / ChatGPT Integrations • AI Chatbots • Content Generation • Workflow Automation • Document Processing • AI-Assisted Business Tools 🚀 API Development & Integrations • Stripe • PayPal • Shopify • Google Merchant Center • Third-Party APIs • Custom API Development 🚀 Performance & Optimization • Application Scaling • Database Optimization • Query Tuning • Caching Strategies • Security Improvements 𝗥𝗲𝗰𝗲𝗻𝘁 𝗣𝗿𝗼𝗷𝗲𝗰𝘁𝘀 ✔ Developed SaaS platforms used by growing businesses ✔ Built AI-powered automation tools using OpenAI APIs ✔ Created custom recruitment and candidate management systems ✔ Implemented secure payment processing with Stripe ✔ Developed REST APIs for third-party integrations ✔ Optimized Laravel applications for improved speed and scalability 𝗪𝗵𝘆 𝗖𝗹𝗶𝗲𝗻𝘁𝘀 𝗛𝗶𝗿𝗲 𝗠𝗲 • 10+ years of professional development experience • Strong expertise in Laravel and modern web technologies • Clean, maintainable, production-ready code • Clear communication and reliable delivery • Long-term support and partnership mindset Whether you need a new SaaS product, AI-powered features, API integrations, or a complete full-stack application, I can help turn your idea into a scalable solution. Let's discuss your project.

⚡ I build scalable web apps, SaaS platforms, dashboards & APIs that are clean, fast, and built to last. 👋 Hi, I'm Saadullah, a Full-Stack Developer with 6+ years of experience helping startups and businesses turn ideas into production-ready products. I own projects end-to-end: from architecture and development to testing, deployment, and scaling. 🏆 Top Rated | 100% Job Success I focus on clean architecture, performance, and long-term maintainability, so what I build today keeps working as your business grows. ━━━━━━━━━━━━━━━━━━━━━━ 💼 Recent Work 🔹 Built and deployed a complete MVP (Peepeep), taking it from existing UI to a fully functional production app 🔹 Multi-vendor eCommerce platform built on the MERN stack 🔹 Fractional real-estate investment platform (Kudo Property) 🔹 Solved critical Azure App Insights & Service Bus integration bugs, delivered same day 🔹 Found and fixed a production bug no other developer could locate, saving the client's deadline ━━━━━━━━━━━━━━━━━━━━━━ 💻 What I Do 🔹 Frontend: React, Next.js, Angular, TypeScript 🔹 Backend: Node.js, NestJS, ASP.NET Core, .NET APIs 🔹 Architecture: REST APIs, Microservices, SaaS platforms 🔹 UI/UX: Responsive dashboards & web apps (Tailwind CSS, Material UI, Shadcn, Bootstrap) 🗄️ Databases & Cloud 🔹 PostgreSQL, MongoDB, MySQL, SQL Server 🔹 AWS, Azure, Docker, CI/CD pipelines 🔹 Authentication & security (JWT, OAuth2, RBAC) ━━━━━━━━━━━━━━━━━━━━━━ 🛠️ How I Work 1️⃣ Requirements analysis 2️⃣ Architecture planning 3️⃣ Development 4️⃣ Testing & deployment 5️⃣ Maintenance & scaling ━━━━━━━━━━━━━━━━━━━━━━ ✅ Why Clients Choose Me ⭐ Clear communicator: I keep you updated and ask the right questions ⭐ Reliable under deadlines: I deliver what I promise, on time ⭐ Solution-oriented: I find bugs and fixes others miss ⭐ I treat every project like it's my own, and my clients mention these qualities again and again in their reviews ━━━━━━━━━━━━━━━━━━━━━━ 📩 Whether you need a quick fix or a long-term partner to build something from scratch, let's talk. Send me a message describing your project and I'll reply within a few hours. 🚀 Let's build something solid together.

"Excellent developer, one of the best on Upwork. Thank you for all your help Pratik, we’ll come directly to you for our next project. A+ Highly recommended!” - Darren, Lincoln, United Kingdom I am a Full-Stack Web Application Developer with 12+ years of experience building scalable, high-quality web applications for global clients. I specialize in turning business ideas into clean, efficient, and production-ready digital solutions. My focus is on building fast, secure, and maintainable applications using modern technologies like Laravel, Node.js, React, Next.js, and WordPress. Core Expertise: Backend: PHP, Laravel, Node.js, Express, NestJS Frontend: React, Vue, Next.js, Angular, Tailwind CSS Databases: MySQL, PostgreSQL, MongoDB CMS: WordPress Tools: GitHub, GitLab, Bitbucket, Jira, AWS, cPanel I believe in writing clean, scalable, and well-documented code with a strong focus on performance and user experience. I am open to long-term collaborations and always aim to deliver reliable, high-quality solutions that help businesses grow. Hire me, I can do your work and finish it on time with good quality. Thank you

Over the last 8+ years, I have developed a wide range of different applications using .NET Framework and .NET Core framework(ASP.NET Core 2+, ASP.NET MVC 3-5, WPF, WinForms, etc) and GHL and various UI development (React.js, Angular.js, JavaScript, JQuery, Bootstrap, CSS, Tailwind CSS, HTML, PHP, Laravel, etc). My goal is to participate in an interesting project and to establish a long-time collaboration with the customer. Experience and Skills: * 5+ years of experience as a QA Manual Tester. * 2+ years of experience in GHL, n8n Automation, AI integration, AI Agents • 7+ years of experience in analyzing, designing, developing, and maintaining web, Windows, N-Tier Object Oriented applications. • Experience in developing desktop applications using C#, WPF, Winforms, ADO.NET, Entity Framework. • Experience in ASP.NET, MVC, Ajax, jQuery, CSS, HTML, PHP, Laravel • Experience in working on Design Patterns & Practices like MVC, MVP, and MVVM. • Experience in developing n-tier C# applications. • Experience in developing Data Access Layers using various ORM and native libraries: Entity framework 6+, Entity framework core, bltoolkit, dapper, ADO.NEt • Experience in complex data collection and analysis for automating processes • Ability to take and give directions and instructions, and provide assistance through the completion of tasks. • Strong analytical and problem-solving skills.

I help businesses build scalable web applications, automate workflows, and develop smart AI-powered solutions that improve efficiency and drive growth. With 8+ years of experience, I specialize in full-stack development, modern frontend frameworks, backend architecture, and business automation systems. My expertise includes: ✔ Full-Stack Web Application Development ✔ .NET & Python Backend Development ✔ React.js & Angular Frontend Development ✔ Claude AI integrations and AI-powered solutions ✔ n8n workflow automation ✔ GoHighLevel (GHL) setup & automation ✔ API integrations and custom business solutions Focused on delivering clean, scalable, and high-performing solutions that solve real business problems and support long-term growth.