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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 ☑️ Strong Knowledge of JavaScript Frameworks: Vue, React, Ionic, Node. ☑️ 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

Hi, Everyone! I'm ✅ Top-rated professional with over 7 years of commercial experience. ✅ One of the best Three.js developers on Upwork with 100% job success rate! ✅ React frontend developer with a strong knowledge and experience in 3D web applications. Looking to bring your 3D vision to life? Let’s chat and make it happen! What I Can Do for You 1. Develop robust product or data management platforms. 2. Create advanced data annotation tools for 3D assets. 3. Design and implement versatile 3D configurators and editors. 4. Develop custom 3D tools, interactive landing pages with immersive experience. 5. Work with various data formats (e.g., FBX, GLTF, OBJ) and integrate them smoothly into your projects. Implement “View in AR” functionality. 6. Create complex animations and visual effects. 7. Develop mini games. Incorporate physics into your application using engines like cannon-es. 8. Help you to visualize large point cloud datasets on the web 9. Perform various frontend development tasks, including layout and design using REACT, HTML, CSS, and JavaScript. 10. Optimize code for improved performance and scalability. Debug and resolve complex code issues efficiently. Tech stack: Frontend Development: Three.js, React, R3F, Redux, Potree, Chart.js, JavaScript, GLSL, HTML5, CSS3, SASS. Backend Development: Node.js, Express, AWS, puppeteer. Tools and Software: Visual Studio Code, GitHub, GitLab.

Hi there! I’m 𝗣𝗿𝗮𝘀𝗵𝗮𝗻𝘀𝗵𝗮 - a Full Stack Developer with 5+ years of experience delivering high-quality, cloud-native web applications. I specialize in building scalable solutions using AWS, GCP, and modern frameworks like React, Node.js, and Python. From frontend interfaces to backend systems and cloud architecture, I bring full-cycle expertise to every project. 𝗧𝗲𝗰𝗵 𝗦𝘁𝗮𝗰𝗸 𝗛𝗶𝗴𝗵𝗹𝗶𝗴𝗵𝘁𝘀: 𝗙𝗿𝗼𝗻𝘁𝗲𝗻𝗱: React, TypeScript, JavaScript 𝗕𝗮𝗰𝗸𝗲𝗻𝗱: Node.js, Express, Python 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲𝘀: PostgreSQL, Redis, MongoDB 𝗖𝗹𝗼𝘂𝗱 𝗣𝗹𝗮𝘁𝗳𝗼𝗿𝗺𝘀: • AWS (Lambda, S3, API Gateway, ECS, DynamoDB) • GCP (Cloud Functions, Firestore, App Engine) 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲 & 𝗣𝗿𝗼𝘁𝗼𝗰𝗼𝗹𝘀: REST APIs, WebSockets, Model Context Protocol (MCP) 𝗪𝗵𝘆 𝗪𝗼𝗿𝗸 𝗪𝗶𝘁𝗵 𝗠𝗲? • Proven track record building reliable, secure, and efficient systems • Deep experience with cloud-native services and multi-tenant SaaS platforms • Strong understanding of Model Context Protocol (MCP) for context-aware applications and scalable microservices • Clean, maintainable code and clear communication throughout every stage I’m passionate about solving real-world problems through tech and delivering results that truly make a difference. Let’s collaborate and bring your idea to life!

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 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

I build 𝐩𝐫𝐨𝐝𝐮𝐜𝐭𝐢𝐨𝐧-𝐫𝐞𝐚𝐝𝐲 𝐒𝐚𝐚𝐒 𝐩𝐥𝐚𝐭𝐟𝐨𝐫𝐦𝐬, 𝐌𝐕𝐏𝐬, and 𝐀𝐈-𝐩𝐨𝐰𝐞𝐫𝐞𝐝 𝐚𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬 that ship fast and scale securely. 𝟕+ 𝐲𝐞𝐚𝐫𝐬 experience · 𝟏𝟎𝟎% 𝐉𝐨𝐛 𝐒𝐮𝐜𝐜𝐞𝐬𝐬 · 𝟑𝟓𝟎𝟎+ 𝐡𝐨𝐮𝐫𝐬 · 𝐌𝐒 𝐂𝐲𝐛𝐞𝐫 𝐒𝐞𝐜𝐮𝐫𝐢𝐭𝐲 (𝐏𝐈𝐄𝐀𝐒) I specialize in 𝐒𝐚𝐚𝐒 𝐌𝐕𝐏𝐬, 𝐢𝐧𝐭𝐞𝐫𝐧𝐚𝐥 𝐭𝐨𝐨𝐥𝐬, 𝐚𝐝𝐦𝐢𝐧 𝐝𝐚𝐬𝐡𝐛𝐨𝐚𝐫𝐝𝐬, and 𝐬𝐞𝐜𝐮𝐫𝐞 𝐰𝐞𝐛 𝐚𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬 using React, Vue, Node Js, TypeScript, and Flutter. Clients choose me when they need a 𝐭𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐩𝐚𝐫𝐭𝐧𝐞𝐫 𝐰𝐡𝐨 𝐭𝐡𝐢𝐧𝐤𝐬 𝐚𝐛𝐨𝐮𝐭 𝐬𝐞𝐜𝐮𝐫𝐢𝐭𝐲 𝐟𝐫𝐨𝐦 𝐝𝐚𝐲 𝐨𝐧𝐞 — not just someone who writes code. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ⭐ TESTIMONIALS "𝐀𝐥𝐢 has been impressive. 𝐄𝐱𝐭𝐫𝐞𝐦𝐞𝐥𝐲 𝐝𝐞𝐝𝐢𝐜𝐚𝐭𝐞𝐝, 𝐯𝐞𝐫𝐲 𝐝𝐞𝐩𝐞𝐧𝐝𝐚𝐛𝐥𝐞, and made a big effort to meet deadlines." — 𝐂𝐑𝐌 𝐂𝐥𝐢𝐞𝐧𝐭 "𝐀𝐥𝐢 was amazing with his 𝐬𝐤𝐢𝐥𝐥𝐬, 𝐭𝐡𝐨𝐫𝐨𝐮𝐠𝐡𝐧𝐞𝐬𝐬, and 𝐩𝐫𝐨𝐛𝐥𝐞𝐦 𝐬𝐨𝐥𝐯𝐢𝐧𝐠. He learned a new specialized domain quickly." — 𝐒𝐨𝐟𝐭𝐰𝐚𝐫𝐞 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫 𝐂𝐥𝐢𝐞𝐧𝐭 "𝐆𝐫𝐞𝐚𝐭 𝐰𝐨𝐫𝐤 𝐝𝐨𝐧𝐞! Will hire again." — 𝐍𝐞𝐱𝐭 𝐉𝐬 + 𝐆𝐫𝐚𝐩𝐡𝐐𝐋 𝐂𝐥𝐢𝐞𝐧𝐭 ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🏗️ SAAS & MVP DEVELOPMENT → 𝐂𝐨𝐦𝐩𝐥𝐞𝐭𝐞 𝐌𝐕𝐏𝐬 𝐢𝐧 𝟐-𝟒 𝐰𝐞𝐞𝐤𝐬 — MERN, MEVN, or custom stack → 𝐌𝐮𝐥𝐭𝐢-𝐭𝐞𝐧𝐚𝐧𝐭 𝐒𝐚𝐚𝐒 𝐚𝐫𝐜𝐡𝐢𝐭𝐞𝐜𝐭𝐮𝐫𝐞 — tenant isolation, white-label → 𝐒𝐮𝐛𝐬𝐜𝐫𝐢𝐩𝐭𝐢𝐨𝐧 & 𝐛𝐢𝐥𝐥𝐢𝐧𝐠 — Stripe integration, recurring payments → 𝐀𝐝𝐦𝐢𝐧 𝐝𝐚𝐬𝐡𝐛𝐨𝐚𝐫𝐝𝐬 & 𝐢𝐧𝐭𝐞𝐫𝐧𝐚𝐥 𝐭𝐨𝐨𝐥𝐬 — analytics, user management → 𝐑𝐞𝐚𝐥-𝐭𝐢𝐦𝐞 𝐜𝐨𝐥𝐥𝐚𝐛𝐨𝐫𝐚𝐭𝐢𝐨𝐧 — WebSocket, Socket IO, live updates ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🔒 SECURITY-FIRST DEVELOPMENT → 𝐒𝐞𝐜𝐮𝐫𝐞 𝐚𝐮𝐭𝐡𝐞𝐧𝐭𝐢𝐜𝐚𝐭𝐢𝐨𝐧 — JWT, OAuth, role-based access → 𝐈𝐧𝐩𝐮𝐭 𝐯𝐚𝐥𝐢𝐝𝐚𝐭𝐢𝐨𝐧 — prevent SQL injection, XSS → 𝐀𝐏𝐈 𝐬𝐞𝐜𝐮𝐫𝐢𝐭𝐲 — rate limiting, CORS, security headers → 𝐃𝐚𝐭𝐚 𝐩𝐫𝐨𝐭𝐞𝐜𝐭𝐢𝐨𝐧 — encryption at rest and in transit → 𝐂𝐨𝐦𝐩𝐥𝐢𝐚𝐧𝐜𝐞-𝐫𝐞𝐚𝐝𝐲 — HIPAA fundamentals, secure multi-tenancy Most developers don't think about security. I do — because my 𝐌𝐚𝐬𝐭𝐞𝐫'𝐬 𝐝𝐞𝐠𝐫𝐞𝐞 is in it. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🧠 AI APPLICATIONS → 𝐀𝐈 𝐜𝐨𝐧𝐭𝐞𝐧𝐭 𝐠𝐞𝐧𝐞𝐫𝐚𝐭𝐢𝐨𝐧 — OpenAI API → 𝐀𝐈 𝐩𝐫𝐨𝐩𝐨𝐬𝐚𝐥 𝐰𝐫𝐢𝐭𝐞𝐫 — feedback loop, PDF export → 𝐋𝐋𝐌 𝐢𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧 — OpenAI, Claude ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🎨 3D & DATA VISUALIZATION → 𝟑𝐃 𝐩𝐫𝐨𝐝𝐮𝐜𝐭 𝐯𝐢𝐞𝐰𝐞𝐫𝐬 — Three Js, WebGL, configurators → 𝐈𝐧𝐭𝐞𝐫𝐚𝐜𝐭𝐢𝐯𝐞 𝐝𝐚𝐬𝐡𝐛𝐨𝐚𝐫𝐝𝐬 — D3 Js, force-directed graphs → 𝐅𝐥𝐞𝐞𝐭 𝐦𝐚𝐧𝐚𝐠𝐞𝐦𝐞𝐧𝐭 — SVG drag-drop, real-time tracking ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ⚙️ TECH STACK Frontend: 𝐑𝐞𝐚𝐜𝐭, 𝐕𝐮𝐞, 𝐓𝐲𝐩𝐞𝐒𝐜𝐫𝐢𝐩𝐭, Tailwind, Material UI Backend: 𝐍𝐨𝐝𝐞.𝐣𝐬, 𝐄𝐱𝐩𝐫𝐞𝐬𝐬, 𝐠𝐑𝐏𝐂, GraphQL, WebSocket Database: 𝐌𝐨𝐧𝐠𝐨𝐃𝐁, 𝐏𝐨𝐬𝐭𝐠𝐫𝐞𝐒𝐐𝐋, MySQL, Firebase Mobile: 𝐅𝐥𝐮𝐭𝐭𝐞𝐫 (iOS & Android) Auth: 𝐉𝐖𝐓, 𝐆𝐨𝐨𝐠𝐥𝐞 𝐎𝐀𝐮𝐭𝐡 Payments: 𝐒𝐭𝐫𝐢𝐩𝐞 AI: 𝐎𝐩𝐞𝐧𝐀𝐈 𝐀𝐏𝐈 ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 📦 PROJECT CATALOG → 𝐀𝐈-𝐏𝐨𝐰𝐞𝐫𝐞𝐝 𝐂𝐨𝐧𝐭𝐞𝐧𝐭 𝐆𝐞𝐧𝐞𝐫𝐚𝐭𝐨𝐫 → 𝐂𝐮𝐬𝐭𝐨𝐦 𝐃𝐚𝐭𝐚 𝐕𝐢𝐬𝐮𝐚𝐥𝐢𝐳𝐚𝐭𝐢𝐨𝐧 𝐃𝐚𝐬𝐡𝐛𝐨𝐚𝐫𝐝 (𝐃𝟑 𝐉𝐬) → 𝟑𝐃 𝐏𝐫𝐨𝐝𝐮𝐜𝐭 𝐕𝐢𝐞𝐰𝐞𝐫 & 𝐂𝐨𝐧𝐟𝐢𝐠𝐮𝐫𝐚𝐭𝐨𝐫 (𝐓𝐡𝐫𝐞𝐞 𝐉𝐬) ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🏆 NOTABLE PROJECTS → 𝐇𝐞𝐚𝐥𝐭𝐡𝐜𝐚𝐫𝐞 𝐀𝐬𝐬𝐞𝐬𝐬𝐦𝐞𝐧𝐭 — Multi-tenant SaaS, white-label → 𝐀𝐢𝐫𝐯𝐢 + 𝐃𝐢𝐠𝐢𝐭𝐚𝐥 𝐓𝐰𝐢𝐧 — Real-time traffic, Flutter, gRPC → 𝐅𝐥𝐨𝐰𝐭𝐚𝐜𝐤 𝐖𝐞𝐛 𝐁𝐮𝐢𝐥𝐝𝐞𝐫 — Drag-drop builder, team lead → 𝐏𝐫𝐨𝐩𝐨𝐬𝐚𝐥 𝐖𝐫𝐢𝐭𝐞𝐫 — AI generation, PDF export → 𝐁𝐚𝐲𝐭𝐮𝐭 𝟑𝐃 𝐄-𝐂𝐨𝐦𝐦𝐞𝐫𝐜𝐞 — 3D viewer, Stripe payments → 𝐓𝐫𝐮𝐜𝐤𝐬 𝐅𝐥𝐞𝐞𝐭 𝐌𝐚𝐧𝐚𝐠𝐞𝐦𝐞𝐧𝐭 — D3 Js dashboard, real-time ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ✅ WELL-SUITED FOR → 𝐒𝐚𝐚𝐒 𝐌𝐕𝐏𝐬 — idea to launch in 2-4 weeks → 𝐈𝐧𝐭𝐞𝐫𝐧𝐚𝐥 𝐭𝐨𝐨𝐥𝐬 & 𝐚𝐝𝐦𝐢𝐧 𝐝𝐚𝐬𝐡𝐛𝐨𝐚𝐫𝐝𝐬 → 𝐀𝐈-𝐩𝐨𝐰𝐞𝐫𝐞𝐝 𝐜𝐨𝐧𝐭𝐞𝐧𝐭 𝐭𝐨𝐨𝐥𝐬 → 𝟑𝐃 𝐩𝐫𝐨𝐝𝐮𝐜𝐭 𝐜𝐨𝐧𝐟𝐢𝐠𝐮𝐫𝐚𝐭𝐨𝐫𝐬 → 𝐒𝐞𝐜𝐮𝐫𝐞 𝐰𝐞𝐛 𝐚𝐩𝐩𝐬 — healthcare, fintech ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 💡 WHY CLIENTS CHOOSE ME ✔ 𝐒𝐞𝐜𝐮𝐫𝐢𝐭𝐲-𝐅𝐢𝐫𝐬𝐭 — MS Cyber Security means your data is protected ✔ 𝐅𝐮𝐥𝐥-𝐒𝐭𝐚𝐜𝐤 𝐃𝐞𝐩𝐭𝐡 — Complete solutions, not just frontend ✔ 𝟕+ 𝐘𝐞𝐚𝐫𝐬 — Started React/Angular in 2018 ✔ 𝟏𝟎𝟎% 𝐉𝐨𝐛 𝐒𝐮𝐜𝐜𝐞𝐬𝐬 — Every contract delivered ✔ 𝐂𝐥𝐞𝐚𝐫 𝐂𝐨𝐦𝐦𝐮𝐧𝐢𝐜𝐚𝐭𝐢𝐨𝐧 — Regular updates, honest timelines Industries: Healthcare, SaaS, E-commerce, Logistics, Marketing

Top-rated Full-Stack Developer with 12+ years delivering secure, scalable solutions that produce measurable business outcomes for global clients. What clients achieved with my work Reduced login friction and support costs by up to 80% after SSO rollouts (SAML, OAuth2, OIDC), improving user adoption and lowering helpdesk tickets. Cut user onboarding time from days to minutes via centralized identity flows and automated provisioning. Increased team productivity up to 40% with custom Office and Google Workspace add-ins that automate repetitive work and integrate third-party systems. Strengthened security and compliance (SOC2, ISO, GDPR) by implementing hardened IAM, PKI, and cryptographic document signing. Scaled multi-tenant SaaS to thousands of organizations with sub-second auth latency and 99.9% uptime. Accelerated go-to-market and recurring revenue growth by delivering modular auth and API platforms. Selected results & experience 100+ SSO integrations across Okta, Auth0, Azure AD/Entra ID, Google Workspace, AWS Cognito, Ping Identity, ADFS, Salesforce. Architected a multi-tenant Identity Broker (sso.id) enabling customers to connect multiple identity providers in minutes, boosting partner integrations and conversions. Built 15+ Office & Google Workspace add-ins (Word, Excel, Outlook, PowerPoint, Gmail, Sheets, Docs), saving teams hundreds of person-hours per month. Developed 20+ SaaS platforms from MVP to enterprise scale with AI automation and APIs (YouTube, AWS, Firebase, Microsoft Graph), improving engagement and monetization. Implemented PKI, PDF signing, and blockchain anchoring to reduce fraud risk and streamline audits. Technical stack Protocols: SAML, OAuth2, OpenID Connect, SCIM, JWT Platforms: Okta, Auth0, Azure AD/Entra ID, Google Workspace, AWS Cognito, Ping Identity, ADFS, Salesforce Frontend: React, Next.js, Vue, Angular, TypeScript Backend: .NET 8 / C#, Node.js, Python, PHP (Laravel, Django) Databases: MySQL, Oracle, MongoDB Specialized: PKI, cryptography, PDF signing, blockchain-secured documents Why hire me ROI-focused: $1.2M+ earned across 200+ projects with measurable improvements in security, productivity, and time-to-market. Business-first engineering: I reduce operational costs, accelerate onboarding, and unlock new revenue channels. Long-term partner: responsive, reliable, and focused on evolving systems as your business grows. Tell me about your auth, add-in, or SaaS challenge and I’ll outline how we can reduce risk, save time, and increase adoption.