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👨🏻‍💻 Expert full-stack developer with 12+🕙 years of working experience in JavaScript web frameworks (Vue.js, Angular.js, React.js, Node.js, GraphQL, TypeScript, JavaScript, MySQL, PostgreSQL, etc) 😃 Enjoy the unparalleled proficiency of my development services, delivering extraordinary results! 📝 Prompt responses to any contract/invite within a span of two hours or less. 💯 100% Job Success Rate - Upwork 🔝🏅 Top Rated Developer - Top 10% at Upwork 🏆Top rated in D3.js Data Visualization 👨🏻‍💻 On-time development, top-notch code, flawless architecture, test-driven full-stack JavaScript developer. I am a passionate developer and have worked on many different kinds of systems, like an education management system, an e-commerce multi-vendor marketplace, enterprise resource planning systems, integration of Google APIs and other payment gateways. I am deeply interested in website, app, and mobile development with various advanced frameworks and programming languages. My Skills: ☑️ Programming Languages: PHP, JavaScript, TypeScript, Golang, Rust ☑️ Strong Knowledge of JavaScript Frameworks: Vue.js, React.js, Node.js, D3.js, Next.js ☑️ Strong Knowledge of PHP Frameworks: Laravel, CakePHP, Codeigniter. ☑️ Strong implementation Knowledge of HTML, HTML5, CSS, CSS3, Sass, Bootstrap ☑️ Strong Knowledge of Database: SQL (MySQL, SQLite, MsSQL, PostgreSQL) and NoSQL (MongoDB, Redis) ☑️ Payment Gateway Integration: Stripe, PayPal, RazorPay, Authorize.net, WorldPay ☑️ Version Control: SVN, GIT ☑️ Project Tracking: Atlassian, Jira, Trello, Asana Expect a professional approach from me as a Full-Stack JavaScript Developer with expertise in Vue, React, and Node.js development. I'm committed to an 8-hour workday, producing clean code, delivering optimal solutions, and contributing numerous innovative and creative ideas tailored to your requirements. 🏆 The client feedback on my profile illustrates the calibre of work and value you can anticipate when collaborating with me. 💡 Insider Hint: - If I do a job in 30 minutes, it's because I spent 12 years learning how to do that in 30 minutes. You owe me for the years, not the minutes. 😆 Much appreciated for learning about my profile! Reach out by inviting me to your Upwork job or sending a direct message, and let's begin this journey together. Best Regards! Khushang Bhavnagarwala

You want to work with someone who has already built and scaled real products — not someone figuring it out on your project. Most web apps don’t fail because of bad ideas — they fail because they’re slow, hard to scale, or poorly built… and by the time you realize it, you’ve already lost users, rankings, and revenue. I fix that. I help founders and teams build fast, scalable web apps using React and Next.js — or improve existing ones that are underperforming. Recently, I improved a frontend to achieve a Lighthouse score of 90+, reducing load time by 40–60%, improving Core Web Vitals, and leading to a 20–30% increase in conversions — with sales growing from $100k+ to $300k+.saving thousands in Google Ads that were previously underperforming due to poor frontend performance. With 5+ years of experience in frontend and fullstack development, I focus on building products that don’t just work — but actually perform under real-world usage. If your app feels slow, messy, or hard to scale — I can quickly identify what’s wrong and fix it. 💡 How I can help • Build fast, SEO-friendly frontends using React & Next.js • Develop fullstack applications (Next.js, Django, APIs, databases) • Turn MVPs into scalable, production-ready systems • Fix slow, buggy, or hard-to-maintain applications • Improve performance (Core Web Vitals, Lighthouse optimization) • API integration & backend connectivity 🤖 AI Integration & Modern Features • AI-powered web apps (OpenAI / LLM integrations) • ChatGPT-style interfaces in React / Next.js • AI dashboards & data-driven UI • Adding AI features to existing SaaS products • Automation workflows using AI APIs I can help you add AI features to your product without overcomplicating your stack. 📈 Recent work & impact • Improved frontend performance → Lighthouse 90+ (faster load, better SEO) • Built fullstack app from MVP → scalable production system • Optimized performance bottlenecks and improved user experience • Developed clean, maintainable architecture for long-term scalability ⭐ What clients say • “Quick to understand the problem and suggest practical solutions” • “Delivers clean, scalable code — not just quick fixes” • “Strong focus on performance and real-world impact” • “Easy to communicate and reliable throughout the project” If you’re building a product — or struggling with performance — let’s start with a small task. If you’re not satisfied, I’ll refund it. No questions asked. 🔍 Technologies & Expertise Frontend: React.js, Next.js, TypeScript, JavaScript (ES6+), Tailwind CSS Backend: Node.js, Django, REST APIs, GraphQL Database: PostgreSQL, MongoDB Focus Areas: Performance Optimization, Core Web Vitals, Lighthouse, SEO Optimization, SaaS Development, MVP Development, Dashboard Development, AI Integration, LLM APIs, ChatGPT Interfaces, API Integration, Web App Scaling, Clean Architecture Specializations: Senior Frontend Developer | Senior React Developer | Senior Full-Stack Developer | Frontend Engineer | Full-Stack Engineer | React.js Developer | Next.js Developer | TypeScript Developer | JavaScript Developer | Python Developer | FastAPI Developer | Node.js Developer | AI Developer | AI Application Developer | OpenAI Developer | GPT Developer | Claude API Developer | Gemini API Developer | LangChain Developer | LangGraph Developer | Konva.js Developer | HTML5 Canvas Developer | Canvas Rendering | WebGL Developer | Interactive Graphics | PDF Viewer Development | Dashboard Developer | SaaS Developer | API Integration Expert | REST API | GraphQL | PostgreSQL | MongoDB | Supabase | Firebase | AWS | Docker | Instagram Graph API | Facebook Graph API | Meta API Integration

Are you looking for a Full-Stack Developer who can build a scalable, production-ready web application instead of just writing code? 𝗬𝗼𝘂'𝗿𝗲 𝗶𝗻 𝘁𝗵𝗲 𝗿𝗶𝗴𝗵𝘁 𝗽𝗹𝗮𝗰𝗲. I'm a 𝗧𝗼𝗽 𝗥𝗮𝘁𝗲𝗱 𝗙𝘂𝗹𝗹-𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 with 𝟴+ 𝘆𝗲𝗮𝗿𝘀 𝗼𝗳 𝗲𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 building custom web applications, SaaS platforms, AI-powered products, marketplaces, admin dashboards, CRMs, and MVPs for startups and growing businesses. I have successfully completed 𝟴𝟬+ 𝗽𝗿𝗼𝗷𝗲𝗰𝘁𝘀 while maintaining a 𝟭𝟬𝟬% 𝗝𝗼𝗯 𝗦𝘂𝗰𝗰𝗲𝘀𝘀 𝗦𝗰𝗼𝗿𝗲, earning long-term client relationships through clear communication, clean architecture, and reliable delivery. 𝗪𝗵𝗮𝘁 𝗜 𝗕𝘂𝗶𝗹𝗱 ✔ MVP, SaaS Platforms ✔ AI Applications (OpenAI, Claude, Gemini) ✔ Startup MVPs ✔ CRM & ERP Systems ✔ Admin Dashboards & Analytics ✔ Marketplace Platforms ✔ E-commerce Applications ✔ Healthcare & Education Platforms ✔ Booking & Scheduling Systems ✔ Custom Business Applications 𝗧𝗲𝗰𝗵 𝗦𝘁𝗮𝗰𝗸 𝗙𝗿𝗼𝗻𝘁𝗲𝗻𝗱 • React.js • Next.js • TypeScript • JavaScript • Tailwind CSS • HTML5 / CSS3 𝗕𝗮𝗰𝗸𝗲𝗻𝗱 • Node.js • Express.js • NestJS • Laravel • PHP 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲 • MongoDB • PostgreSQL • MySQL • Firebase • Supabase 𝗔𝗜 & 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻𝘀 • OpenAI API • Claude API • Gemini API • LangChain • Vector Databases • Stripe • PayPal • Twilio • SendGrid • Google APIs • REST APIs • GraphQL 𝗪𝗵𝘆 𝗖𝗹𝗶𝗲𝗻𝘁𝘀 𝗛𝗶𝗿𝗲 𝗠𝗲 • Production-quality code • Scalable architecture • Fast communication • Clean and maintainable codebase • Pixel-perfect frontend implementation • Secure backend development • API integrations • Performance optimization • Long-term support after delivery I can work on projects from the idea stage through planning, UI implementation, backend development, API integration, deployment, and ongoing maintenance. Whether you need to build an MVP, modernize an existing application, or develop a complete SaaS product, I focus on delivering software that is scalable, maintainable, and ready for real users. Let's discuss your project and build something great together. #Full stack developer, #MVP Expert, #MVP Expert, #MVP Expert, #Full-Stack Developer, #Full-Stack Developer, #MVP Expert, #Full-Stack Developer, #Full-Stack Developer, #Full-Stack Developer, #Full-Stack Developer,#SAAS Expert, #full stack React developer, #node developer, Full Stack SaaS Developer | MERN Stack developer | MEAN Stack developer | Full Stack Developer React Node | React | Node Developer| Next | MongoDB | REST API | PERN | React | React Developer | Node | React Node | Backend nodejs | node developer | Full Stack MERN | #Reactexpert, #Fullstackdeveloper, #Nodeexpert, #Laravelexpert #Full Stack Developer, #MVP expert, #MVP expert, #MVP expert, #MVP expert, #React Expert, #React Expert, #React Expert, #React Expert, #Next expert, #Next expert, #Next expert, #Next expert,#Chart, #React, #Node, #Laravel, #PHP, #Dashboard Development, #Data Visualization, #Mapbox, #Google Map API

Data visualization & full-stack engineer. I take ownership of technical and data problems end-to-end, so you can get back to running your business. Trusted by PwC, UNDP, BMJ, Reuters Institute, Airbnb, Electronic Arts, Canva, and LSE. How I work: I ask the right questions, understand the real problem, architect a proper solution, and ship it production-ready. 15+ years of professional software development. 90+ client projects. 100% Job Success. I've built everything from enterprise full-stack platforms and microservices to bespoke data visualizations and apps — across stacks, across domains. I combine deep engineering experience with frontier AI tools, giving me the speed and range of a small team. Recently I shipped a live, fully automated system solo — front end through infrastructure — in under two months. Whether it's full-stack development, data visualization, cloud infrastructure, automation, or APIs, I have the fundamentals and the tooling to deliver. I take on a limited number of engagements to give each client focused, senior-level attention. If you need a seasoned engineer who treats your problem like their own — let's talk. Tools I work with, in no particular order: D3.js, WebGL, Pixi.js, Mapbox, Leaflet, Observable, Flourish, Datawrapper, JavaScript, and charting libraries (Highcharts, amCharts, Chart.js, Plotly, Cytoscape) — plus Node.js, Python, Go, SQL/NoSQL, Supabase, AWS/GCP/Azure, Docker, Kubernetes, DevOps, React, Vue, Svelte, and AI agents / agentic workflows. Client testimonial: ★★★★★ "It was an absolute pleasure to work with Ashish on this follow-on project. He is a very talented, personable developer and always eager to learn to keep his skills relevant. He asks good questions to ensure he understands the requirements fully and the nature of the problems that need to be solved, so that he can recommend solutions accordingly. He is an excellent communicator and takes the initiative to lead, ensuring project momentum is maintained. Ashish works very well in a team environment. Once again, his can-do attitude demonstrated his commitment to ensuring a successful project outcome."

Expert Angular/IONIC/Firebase developer over the last four years with solid knowledge and proven industry experience in angular 1 to 11, Hybrid mobile application development with ionic framework node.js, d3js, firebase & Firestore, type-script, coffee-script, java-script, bootstrap, less framework Key Skills: - - Angular 2 to 18 - AngularJS - NodeJS - Firebase - bootstrap - less - UI-Design Mobile Skills: - - ionic framework - flutter - react-native - phone-gap - Android

I'm a Full-Stack Developer with a strong passion for creating seamless and interactive web and mobile experiences. With over 8 years of experience in the tech industry, I’ve mastered various front-end and back-end technologies, specializing in React.js, Node.js and Next.js for building dynamic user interfaces, as well as React Native for mobile app development. I'm well-versed in JavaScript and TypeScript, and I excel at integrating modern backend solutions using Node.js, Express.js, and Django. I also have hands-on experience with Web3.js and ethers.js for building decentralized apps (dApps) on the blockchain. I’ve had the opportunity to work on a variety of projects, including role-based systems, marketplaces, online learning platforms, trading systems, and more — leveraging my expertise to deliver high-quality, scalable solutions. Key Skills: Front-end: React.js, Next.js, React Native,Node.js State Management: Redux Back-end: Django, FastAPI, Node.js, Express.js Languages: JavaScript, TypeScript, Python Query Language: GraphQL Styling: CSS3, Bootstrap, Material Design, Svelte kit Markup: HTML Version Control: Git Databases: MySQL, MongoDB In-memory Data Store: Redis Headless CMS: Contentful, Strapi Testing: Jest Cloud Platforms: AWS Amplify, Firebase Blockchain Development: Web3.js, ethers.js Real-time Communication: WebSockets, WebRTC I’m passionate about building scalable, performance-oriented applications with a focus on user experience. Let’s work together to bring your ideas to life!