Hire the Best Box2D Developers

Senior Node.js Backend Engineer | Microservices | API Development | AWS | Redis AI-Augmented Development (Cursor, Claude) I help startups and SaaS companies build scalable backend systems, APIs, and cloud-based platforms using Node.js and modern microservices architecture. With 8+ years of experience in backend engineering, I have worked on production platforms serving thousands of users across SaaS, gaming, marketplace, and enterprise systems. Recent platforms I contributed to include: • Scitara – Scientific data management platform • Rize.gg – Competitive gaming platform • Botevo – SaaS platform development • HomeInspectorTech – Digital inspection workflow platform • AbsoluteMatrimony – Large-scale matrimonial platform What I help clients with: • Scalable Node.js backend architecture • REST API and microservices development • Performance optimization and debugging • SaaS platform backend development • Third-party API integrations • Database design and backend scalability Tech Stack: Node.js • TypeScript • Express • Microservices • Redis • PostgreSQL • MongoDB • AWS • Docker I also leverage AI-assisted development tools such as Cursor and Claude to accelerate debugging, refactoring, and development while maintaining high code quality and engineering standards. If you're building a SaaS platform, backend system, or API-driven product, I can help design and implement reliable and scalable backend solutions.

Six years of experience have prepared me for all project stages and sizes. Whether it's conceptualizing a fresh project, rescuing a troubled one or scaling to serve millions, my expertise in Three.js, WebGL, React, and Next.js ensures I’m equipped to create mind blowing 3D web experiences that are smooth, interactive, and browser friendly. 👉 𝐀𝐫𝐞 𝐲𝐨𝐮 𝐟𝐚𝐜𝐢𝐧𝐠 𝐨𝐧𝐞 𝐨𝐟 𝐭𝐡𝐞𝐬𝐞 𝐜𝐡𝐚𝐥𝐥𝐞𝐧𝐠𝐞𝐬? • “We need more than just a 3D model, we need a high performance 3D product configurator that can drive sales and integrate with our e-commerce platform.” • “Our current 3D Web App is just frustratingly slow and buggy. We're hoping to find an expert who can step in to fix the problems and make sure it runs smoothly for our customers.” • “We’re tired of developers with only 'YouTube-tutorial' familiarity. We need a true Three.js specialist who understands the complexities of creating high quality 3D on the web.” • “Our last developer left our project unfinished. We need a reliable expert to take ownership and get the project across the finish line.” 👉 𝐒𝐨𝐥𝐮𝐭𝐢𝐨𝐧𝐬 𝐈 𝐃𝐞𝐥𝐢𝐯𝐞𝐫 • 3D Product Configurators & Custom Model Viewers • Immersive 3D Websites & Landing Pages • High-Fidelity 3D Product Visualization • Procedural Geometry & Mesh Generation • Advanced Character & Armature Animation • Dynamic Particle Systems & Visual Effects • Motion Capture & Motion Tracking Implementation • AR/VR & WebXR Applications • Browser-Based 3D Games & Metaverse Environments • Interactive 2D/3D Sprite Environments • Scaling Next.js & Supabase Applications Drop me a message with “𝐑𝐄𝐀𝐃𝐘” and get a free discovery session with a solid action plan. 👉 𝐓𝐨𝐨𝐥 𝐁𝐨𝐱 • React.js, Next.js, Redux, RTK • Three.js, React Three Fiber, React Three Drei, Framer Motion, React Spring, React Three Rapier, Babylon.js, Fabric.js, WebGL, WebXR, AR/VR, ARKit, WebXR • Texture Optimization: KTX, ETC1S, and UASTC • Node.js, Express, GraphQL, Nest.js, Supabase • MongoDB, PostgreSQL, Redis • AWS, DigitalOcean, Vercel 👉 𝐇𝐢𝐠𝐡𝐥𝐢𝐠𝐡𝐭𝐬 • 400+ hours as a Three.js/WebGL Developer on 3D Teamwear Configurator • 2500+ hours as a Three.js/WebGL Developer on a Metaverse multi-tenant E-commerce. • 1400+ hours as a Three.js/WebGL Developer on a multi-tenant 3D Packaging Solution. • 40+ hours as a Three.js/R3F developer on a 3D travel visualization platform. • 30+ hours as a Three.js/R3F developer on a 3D robotics warehouse solution. 🎁 Feel free to reach out anytime, I'm quick to respond here on Upwork. ( unless I'm sleeping )

𝐄𝐱𝐩𝐞𝐫𝐭-𝐕𝐞𝐭𝐭𝐞𝐝 𝐒𝐡𝐨𝐩𝐢𝐟𝐲 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 | 𝐒𝐡𝐨𝐩𝐢𝐟𝐲 𝐄𝐱𝐩𝐞𝐫𝐭 | 𝐃𝐓𝐂/𝐃𝟐𝐂 & 𝐂𝐏𝐆 𝐄𝐜𝐨𝐦𝐦𝐞𝐫𝐜𝐞 𝐒𝐩𝐞𝐜𝐢𝐚𝐥𝐢𝐬𝐭 | 𝟐,𝟓𝟎𝟎+ 𝐏𝐫𝐨𝐣𝐞𝐜𝐭𝐬 𝐃𝐞𝐥𝐢𝐯𝐞𝐫𝐞𝐝 | 𝟏𝟓+ 𝐘𝐞𝐚𝐫𝐬 𝐨𝐟 𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 I help DTC/D2C and CPG brands migrate, optimize, and scale on Shopify & Shopify Plus. With 2,500+ ecommerce projects delivered, I combine Shopify development, CRO, performance engineering, and complex migrations to build stores designed for growth, speed, and conversions. A few results from recent work: • Holy Plantz: Built a conversion-focused product experience to improve engagement. • Nékter Juice Bar: Developed a custom location-based delivery solution to support higher conversions. • 15,000+ Product Migration: Migrated a large ecommerce catalog while maintaining SEO, customer data, and order history. • Global Expansion: Implemented Shopify Markets and multi-country storefronts for international growth. • Enterprise Shopify: Built scalable solutions for fast-growing DTC, CPG, and enterprise brands. --- 🚀 Shopify & Shopify Plus Migration | SEO-Safe Replatforming I migrate ecommerce stores to Shopify / Shopify Plus with zero SEO loss, full data integrity, and minimal downtime. ✔ WooCommerce, Magento, BigCommerce, OpenCart → Shopify ✔ Products, customers, orders, pages & content migration ✔ SEO preservation, URL mapping & 301 redirects ✔ Complex products, variants, bundles & pricing rules Result: Safe, SEO-optimized migration with complete data accuracy. --- ⚙️ Shopify Plus Development | Custom Solutions I build scalable Shopify / Shopify Plus stores tailored to business needs. ✔ Custom theme development (Figma to Shopify) ✔ Shopify Plus features & checkout customization ✔ Metafields, metaobjects, custom sections & logic ✔ B2B, wholesale, DTC & multi-market setups ✔ Subscriptions, bundles & third-party integrations Result: High-performance, scalable Shopify solutions built for growth. --- 📈 CRO & Performance Optimization I optimize Shopify stores for speed, UX, and conversions. ✔ UX/UI & product page optimization ✔ Cart & checkout optimization ✔ CRO, AOV & revenue optimization ✔ Speed, Core Web Vitals & performance tuning ✔ App audit, cleanup & efficiency improvements Result: Faster stores with higher conversion rates. --- 🔗 Shopify Integrations & Automation I connect Shopify with your business systems to automate workflows. ✔ ERP, CRM, shipping & fulfillment integrations ✔ Klaviyo, Gorgias & Shopify Flow automation ✔ Zapier, Make & n8n workflows ✔ Order, inventory & customer automation ✔ AEO (Answer Engine Optimization) & GEO optimization Result: Fully automated, efficient ecommerce operations. --- 🤖 AI & Ecommerce Automation I implement AI to enhance ecommerce performance and efficiency. ✔ OpenAI & ChatGPT integrations ✔ AI customer support & chatbots ✔ Content generation, FAQs & product data automation ✔ Business process automation & workflows ✔ Rapid prototyping & AI-driven features Result: Smarter, AI-powered ecommerce systems. --- 🏪 INDUSTRIES Fashion eCommerce • Clothing eCommerce • Apparel eCommerce • Beauty eCommerce • Cosmetics & Skincare eCommerce • Wellness eCommerce • Nutrition eCommerce • Supplement eCommerce • Food & Beverage eCommerce • Home & Living eCommerce • Furniture eCommerce • Pet Care eCommerce • Pet Products eCommerce • Kids Products eCommerce • Jewelry eCommerce • Footwear eCommerce • Luxury eCommerce • Automotive eCommerce • Electronics eCommerce • Consumer Electronics eCommerce • Mobile Accessories eCommerce • Sports & Fitness eCommerce • Bicycle eCommerce • CBD eCommerce • Organic Products eCommerce • Medical Supplies eCommerce • Healthcare eCommerce • Industrial eCommerce • Electrical Equipment eCommerce • B2B eCommerce • Wholesale eCommerce • DTC eCommerce • Subscription eCommerce • Multi-Country Ecommerce 🛠️ CORE EXPERTISE Shopify • Shopify Plus • Shopify Migration • Shopify CRO • Shopify Performance Optimization • Liquid • JavaScript • HTML/CSS • Klaviyo • GA4 • Shopify Flow • ERP & CRM Integrations • Lovable • ChatGPT • n8n • Claude Whether you are planning a Shopify migration, need advanced Shopify Plus development, want to improve store performance, or need a long-term Shopify partner, I'd be happy to discuss your project. Shopify Expert on Upwork | Shopify developer Upwork | Shopify designer Upwork | Shopify Store set up Upwork | Shopify Website Development | Shopify Store Setup | Shopify Theme Customization | Shopify Plus | Shopify E-commerce Solutions | Shopify App Development | Landing Page Design | UI/UX Design | Responsive Web Design | HTML | CSS | SEO Optimization | Dropshipping Store Setup | Web Design & Development | Store Optimization | Shopify Specialist | AI Integration Specialist | DTC/D2C Ecommerce Specialist | CPG Website Design | Shopify Markets | Performance | Custom Development

I build scalable backend systems, high-performance web apps, and cloud-deployed APIs. As a Full Stack Engineer with 3+ years of production experience, I don't just write code I architect systems that reliably handle scale, edge cases, and international markets. From designing PostgreSQL schemas to deploying on AWS and GCP with automated CI/CD, I lead product cycles from zero to launch. 🔧 WHAT I SPECIALIZE IN ✅ Backend Development: Node.js, Express.js, Next.js, and FastAPI. I build secure REST APIs handling complex business logic, JWT/OAuth authentication, and high production loads. ✅ Full Stack Web Apps: React.js, TypeScript, Redux Toolkit, and RTK Query. I deliver responsive, production-ready frontend architectures seamlessly integrated with scalable backends. ✅ Cloud & DevOps: AWS (EC2, S3), GCP Cloud Run, Docker, and GitHub Actions. I treat DevOps as a priority, ensuring zero-downtime CI/CD deployments and reliable infrastructure. ✅ Payment & Fintech: Stripe, e-wallets, referral commission systems, and multi-currency abstraction. Experienced in webhook idempotency, signature validation, and reconciliation. ✅ AI Integrations: OpenAI GPT, Whisper API, and Hugging Face GPU deployments. I build full-stack AI platforms with independent pipelines via REST APIs. ✅ Databases & Real-Time: PostgreSQL, MongoDB, Prisma. Normalized schemas and optimized queries. Real-time chat and live data sync using Socket IO and Firebase. 🚀 PRODUCTION WORK I'VE SHIPPED * Ojiyo & E-Commerce Marketplaces: Built real-time messaging, e-wallets, live order tracking, and automated commission systems at production scale. * Dress Genie: Full-stack AI virtual try-on platform with 3 independent Python AI pipelines running on Hugging Face GPU infrastructure. * Fintech Infrastructure: Built a country-specific payment abstraction layer enabling seamless expansion across 3 international markets. Managed secure Stripe webhook integrations. * Cloud Operations: Executed S3 data migrations and lifecycle management. Configured Node.js backends on AWS/GCP with full CI/CD automation and performance monitoring. 🛠️ TECH STACK * Languages: JavaScript, TypeScript, Python, SQL * Backend: Node.js, Express.js, Next.js, FastAPI, Nest.js * Frontend: React.js, Redux Toolkit, Tailwind CSS, Bootstrap * Databases: PostgreSQL, MongoDB, Firebase, Prisma, Mongoose * Cloud & DevOps: AWS, GCP, Docker, GitHub Actions, Shell Scripts * APIs & Payments: Stripe, OpenAI, Socket IO, GraphQL 🏆 ACHIEVEMENTS & CREDENTIALS * Winner: VisioSpark Web Development Hackathon, COMSATS University. Won 1st place building a full-stack web application under strict time pressure. * Top Rated: "Ali is a very professional web developer. It was my best experience working with him." 5-Star Upwork Client. * Education: BS Computer Science, COMSATS University Islamabad. 🤝 HOW I WORK WITH CLIENTS * Proactive communication and regular updates (PKT timezone, overlapping EU/US mornings). * Clean, documented, and maintainable code. * Requirements fully clarified before writing a single line. * Comfortable collaborating with technical founders and non-technical clients alike. 📩 LET'S WORK TOGETHER Need a backend API, a full-stack web app, cloud deployment, Stripe integration, or an AI-powered feature? Send me a message with your project details, and I'll respond within a few hours with my approach. Let's build something great.

✅ Job completion guaranteed before payment ✅ 100% Job Success - 5 stars rating ✅ 8 years of experience - Game Development ✅ Founder of a 15-members game studio ✅ 2D & 3D Video Game Engineering - Art - Design MY SERVICES: - HTML5 Game Development: I build responsive, high performance, cross-platform games using HTML5 technologies. - Playable Ads Development: I delivered successful playable ads campaigns for big companies like Amanotes, Onesoft, Zego Studio, Yodo1, and more. I also have my own tools and framework to optimize and export them to all popular ad networks. - Mobile Game Development: From concept to release, I create highly optimized, visually stunning games for iOS and Android platforms. TECHNICAL SKILLS: - Game Engines & Frameworks: PlayCanvas, PixiJS, Phaser, ThreeJS, Unity - Back-end & SaaS: Nakama, Firebase, PlayFab - Game Design - 3D & 2D Game Art, UI ✅ If you want to bring your game ideas to life without wasting your time, I’m the solution you’re looking for. I can make a high-end product with a little input. 🔑 KEYWORDS: Unity, PlayCanvas, PixiJS, ThreeJS, Phaser, Nakama, Firebase, Playfab, Game Design, 3D Game Art, 2D Game Art, Game Development, Mobile Game, HTML5 Game, Web Game, Playable Ads, Interactive Ads, Game Design & Development

Hello there 👋 I’m Misbauddin Chowdhury, an enthusiastic Full Stack Software Engineer with a B.Sc. in Computer Science and Engineering and 8+ years of hands-on experience building modern, scalable, and secure web applications. I specialize in React.js, Node.js, and AWS, and I’m passionate about helping startups and growing businesses turn ideas into production-ready products. Whether you need a high-performance frontend, a robust backend API, or a cloud-deployed system, I’ve got you covered from start to finish. == My Core Expertise == ✅ DevOps & Cloud Infrastructure - GitHub Actions, CI/CD pipelines - AWS EC2, S3, CloudFront, SNS, Route 53 - Docker containerization and deployment ✅ Front-End Development - React.js, Next.js, Vue.js - HTML5, CSS3, JavaScript (ES6+), AJAX, jQuery - Responsive UI design using Bootstrap and Tailwind CSS - State management with Redux, Redux-Saga, MobX, and Context API - Integration with REST and GraphQL APIs ✅ Back-End Development - Nest.js, Node.js, Express.js, Koa.js- GraphQL and RESTful API design - Database design and integration (PostgreSQL, MongoDB, MySQL) - Authentication (JWT, OAuth), Role-based access control - WebSocket / real-time app development ✅ Project Management - Agile/Scrum methodology using Jira & Confluence - Clear communication, documentation, and collaborative teamwork 🧠 Personal Qualities - Critical thinker & problem solver - Clean, maintainable coding style - Open-minded and adaptive - Excellent communication & client collaboration skills 🎨 Bonus Skill Besides coding, I’m also skilled in Graphic Design (Adobe Photoshop & Illustrator). This helps me transform any UI/UX design into a functional and pixel-perfect web application with great attention to detail. Take a look at my portfolio to explore my recent projects and see how I turn ideas into production-ready software.