Hire the Best Box2D Developers in Kolkata, IN

✅ Solution Architect | Full-Stack | DevOps | Cloud | AI/ML | LLM Apps | IoT Hi, I’m Niladri — a Solution Architect and Full-Stack Developer with 15+ years of experience helping startups, SaaS companies, and enterprises design, build, automate, and scale secure, production-ready software systems. Clients hire me when they need more than a coder. They need someone who can understand the business goal, design the right architecture, build the product, automate infrastructure, integrate AI where it adds value, and keep the system scalable, maintainable, and cost-efficient. I can work as a senior engineer, architect, DevOps consultant, technical lead, or long-term technology partner. 📊 Skill Ratings DevOps & Cloud Architecture – ▓▓▓▓▓▓▓▓▓▒ 9.5/10 Solution Architecture – ▓▓▓▓▓▓▓▓▓▒ 9.5/10 Backend & API Engineering – ▓▓▓▓▓▓▓▓▓░ 9/10 AI/ML & LLM Integration – ▓▓▓▓▓▓▓▓░░ 8/10 IoT & Embedded Electronics – ▓▓▓▓▓▓▓▓░░ 8/10 Frontend Development – ▓▓▓▓▓▓▓░░░ 7/10 Mobile App Development – ▓▓▓▓▓▓▓░░░ 7/10 🚀 What I Can Help You With ☁️ Cloud, DevOps & Platform Engineering I design and deploy cloud-native infrastructure using AWS, Google Cloud, Azure, DigitalOcean, Heroku, and hybrid/on-premise systems. AWS: EC2, S3, RDS, Lambda, ECS, EKS, Fargate, DynamoDB, CloudFront, Route 53 GCP: Cloud Run, GKE, Firebase, Cloud SQL, BigQuery, Pub/Sub, AI APIs Azure: Functions, App Services, PostgreSQL, DevOps, cloud migration Core DevOps: Docker, Kubernetes, Helm, Terraform, CI/CD, GitHub Actions, GitLab, Jenkins, Bitbucket Pipelines, monitoring, backups, security hardening, high availability, and cost optimization. 🤖 AI/ML, LLM Apps & Automation I help businesses integrate AI into real products and workflows: LLM applications, OpenAI/AWS AI/Google AI integrations, RAG knowledge-base systems, AI chatbots, document processing, vector search with PostgreSQL/pgvector, recommendation engines, predictive analytics, and workflow automation. My focus is not just adding AI features — I design AI systems that are useful, secure, measurable, and practical. 💻 Full-Stack Web Development I build scalable web applications with clean architecture and maintainable code. Backend: Node.js, NestJS, Express, TypeScript, Python, Django, Flask, FastAPI, Java/Spring Boot Frontend: React.js, Next.js, Vue.js, Angular, admin dashboards, SaaS portals Databases: PostgreSQL, MySQL, MongoDB, Redis, DynamoDB, MariaDB, MS SQL I focus on API performance, database design, authentication, authorization, security, testing, and maintainability. 🔗 API Development & SaaS Integrations I build APIs, webhooks, integration layers, and event-driven systems. Experience includes Amazon MWS/SP API/Ads API, QuickBooks Online/Desktop, Xero, FreshBooks, HubSpot, Salesforce, Zoho, Zendesk, Stripe, Twilio, Slack, Asana, REST, GraphQL, Webhooks, Microservices, and Event-driven Architecture. 📱 Mobile App Development React Native, Flutter, and PWAs with real-time chat, push notifications, payments, GPS tracking, offline sync, dashboards, and cloud backend integration. 🌐 IoT & Embedded Systems Embedded Linux, Buildroot, Arduino, ESP, Raspberry Pi, RTOS, FPGA, Petalinux, RFSoC, ZCU111, XRF8, I2C, SPI, UART, TCP, MQTT, sensor integration, and firmware-to-cloud-to-dashboard platforms. 🧠 Technical Leadership I support teams with architecture, cloud review, code/PR review, CI/CD setup, security planning, database/API design, bottleneck resolution, team grooming, scalability planning, and engineering best practices. 🌟 Why Clients Hire Me ✔️ 15+ years of hands-on software, cloud, DevOps, AI, and IoT experience ✔️ Strong mix of architecture, development, automation, and technical leadership ✔️ Ability to work independently or lead a technical team ✔️ Experience with SaaS, fintech, e-commerce, AI, cloud, API integrations, and IoT systems ✔️ Practical mindset: I design systems that can be built, deployed, scaled, and supported ✔️ Strong focus on clean code, security, documentation, automation, and maintainability I don’t just deliver code — I help you build a reliable product, scalable platform, and stronger technical foundation. ⭐ Client Feedback “Nil headed up a full backend solution including RESTful API and AWS cloud setup. He is knowledgeable, understands your needs, and delivers creative, high-quality solutions.” — Douglas Stirling “Nil is an excellent developer — quick to grasp requirements, easy to communicate with, and always delivers well-tested, first-class work.” — Sat Sindhar “Niladri is a highly experienced full-stack programmer with thorough knowledge across technologies. I am extremely satisfied with his services.” — Vishal Agarwal “Niladri is the best at what he does. Very easy to communicate with, delivers flawless work, and provides great support after the job is done.” — Muzaffer Selimbeyoglu 📌 Background Degree in Computer Science CCNA | RHCE Diploma in Computer Hardware & Electronics GitHub Portfolio: fuzonmedia

I build fast, visually striking websites and interactive 3D web experiences using React, Next.js, GSAP animation, and Three.js/WebGL. If you want a landing page or product site that feels alive — smooth motion, 3D, and pixel-perfect UI — I can help. What I do for clients: • High-converting landing pages and marketing sites built in React and Next.js • Scroll-based and interactive animation with GSAP • Interactive 3D and WebGL experiences with Three.js and React Three Fiber • Custom Shopify storefronts and full-stack builds (Firebase, REST APIs) when you need end-to-end delivery Recent work includes animated agency and architecture landing pages, e-commerce storefronts, and a real-time chat application. As a Top Rated developer on Upwork with 15 completed contracts, I focus on clean, maintainable code and reliable delivery. How I work: I start by understanding the outcome you need, share a clear plan and timeline up front, and keep communication tight so you always know where the project stands. No surprises, no missed deadlines. Tech stack: React, Next.js, JavaScript (ES6+), TypeScript, GSAP, Three.js, WebGL, React Three Fiber, Tailwind CSS, HTML5, CSS3, Firebase, Shopify, REST APIs, responsive design, Core Web Vitals and performance optimization. Send me your project details or a design file and I'll tell you exactly how I'd approach it, what it will take, and whether I'm the right fit.

Creativity stems from the urge to create. We, as a renowned design and development company with over 10 years of experience in this field, are always striving to go that extra mile when it comes to ‘creations’. We take a fresh guard every time we are involved in projects, trying to create designs that will act as motivation and a source of inspiration for others to follow. We take pride as our services are around on a 24/7 basis. Regardless of how tough the going gets for us at times, we are ready to give out everything in the name of ‘better service standards.’ Anyone who has sampled our work would admit the great essence and mix of ideas we bring on to our work pattern. We have never let our work standards to dip over our career stretching well over a decade. With constant employee strength of 10-12 we have churned excellent work projects after projects. Our client base needless to say is extensive and quite varied. We have so far helped businesses of all sizes and dimensions from start-ups to small and mid-scale corporate that too across the globe, find their feet. Our specialty of helping corporate bodies develop their businesses simply by having a better brand identity is well known. When there always have been an increasing level of competition in the market, we have helped our clients survive the most aggressive of market conditions through clever ploy of the available resources. How much creative’s are really needed to attain success? In order to get the proper answer to such a question, it is important to understand, representation of clients that we as a company do has to have original creative concepts. Originality even in the smallest of quantities can spell success and help a client company has that much desired ‘unique edge ‘over others. Keeping it simple and offering easy, straightforward solutions is how we would like to keep our service standards. The artwork we offer in our work like that of logo designing very well represents the true identity of our client. Tweaking elements of fonts, shapes, colors and patterns we always come up with the most distinctive of solutions. Our team of employees are specialized professionals who know their craft well for any of our services from logo design to stationary design, package design, flyer, brochure & postcard design, T-Shirt design, illustration to name a few. When we work our primary aim remains with kindling the interest of the masses for our client’s products. Unless the masses feel a strong desire to go for the products, we can understand, the popularity index just wouldn’t develop for the client’s brand. Our work pattern remains centric on the development of meaningful and highly engaging content or thought provoking work pattern for our customers. It is to keep brand uniformity across every communication levels for our client; we are highly adept at making business cards, letter heads and more. Prospective clients and customers can very well consult our website to sample our portfolio for various kinds of designing services. We sure do have a number of options all equally appealing for our future clients. It’s not just skill which we put into our work, we very well understand that designing can only be effective once we get to know the brand of our client up-close, the end-user customers, the probable competitors and the message that needs to be conveyed. When technology is ever changing, we are keeping up to match it through extensive training of our employees, knowledge building exercises and relentless innovation to deliver the desired excellence. Building responsive websites is one example of this change, as more and more people are accessing the internet through their mobile phones itself. Should someone be interested to know more and get in touch with us?

Looking for a senior Shopify or WordPress developer who can handle more than basic theme edits? I am a Senior Shopify & WordPress Developer specializing in Shopify 2.0, Liquid, WooCommerce, custom themes, integrations, and performance optimization with 396+ Upwork projects, $400K+ earned, and 100% Job Success. 🛍️ Shopify Development — Shopify 2.0, Liquid, custom themes, custom sections, product/collection templates, storefront customization, Shopify Plus, app/API integrations, migrations, CRO and performance optimization. 🌐 WordPress & WooCommerce — Custom WordPress development, WooCommerce, Elementor, Divi, custom themes/plugins, API integrations, membership, booking and complex eCommerce functionality. ⚡ Performance & Optimization — Core Web Vitals, PageSpeed, frontend optimization, JavaScript/CSS optimization, image optimization, technical fixes and conversion-focused improvements. 🔌 Custom Integrations — REST APIs, GraphQL, Stripe, PayPal, third-party services and custom business workflows. 🤖 AI & Business Automation — OpenAI API integrations, AI-powered customer workflows, smart chat systems and automation that connect with websites, eCommerce stores and business platforms. Why clients work with me: • Top Rated Plus freelancer with a proven Upwork track record • Strong experience with complex eCommerce and business websites • Clean, production-ready and maintainable development • Focus on performance, security, usability and conversion • Backed by an established web development team for larger projects Whether you need a Shopify store built, an existing WordPress/WooCommerce site improved, a migration completed, or a complex integration developed, I focus on solving the underlying business problem—not just writing code. #Shopify #ShopifyDevelopment #Shopify2_0 #ShopifyPlus #Liquid #ShopifyTheme #ShopifyCustomization #WooCommerce #WordPress #WordPressDevelopment #Elementor #Ecommerce #APIIntegration #CoreWebVitals #PageSpeed#AIAutomation #AIAgents #AIIntegration #AIChatbot #VoiceAI #N8N #LLM #RAG #APIIntegration #BusinessAutomation

I'm the single partner teams hire instead of 4 separate vendors for online learning. Need an LMS or eLearning project done right? I'm a Top Rated eLearning consultant and LMS strategist - the single partner who covers strategy, course production, AI, and migration. I build training that solves real business problems, not box-ticking compliance theater. Most companies stitch together a strategist, an instructional designer, a course builder, an LMS admin, and now an AI specialist - five vendors, five timelines, five invoices. I do all of it. That's why clients keep me on retainer and why I hold a 100% Job Success score and 2,600+ hours on Upwork. When you hire me here, you get me hands-on - with a vetted team behind me only when your project genuinely needs the extra horsepower. WHAT I DO (end-to-end): - Strategy & needs analysis: turn business goals into a concrete learning plan (ADDIE, outcomes mapping, CEU/compliance requirements) - LMS selection & setup: vendor-neutral advice, then full implementation on LearnWorlds, Kajabi, Thinkific, Teachable, Canvas, Moodle, TalentLMS, Absorb, Docebo, and more - LMS migration: clean, zero-data-loss cutovers between platforms (e.g. Kajabi → LearnWorlds) with no broken courses or lost students - Course production: built in Articulate Storyline & Rise, with SCORM/xAPI packaging - AI-powered course production: cut build time and cost with AI video (HeyGen, Synthesia), AI voiceover (ElevenLabs), and AI-assisted authoring — without cheapening quality - AI instructional design: turn your raw material (SOPs, slides, recordings) into structured course blueprints fast, using AI to accelerate the heavy lifting while I keep the pedagogy sound - AI tutors & learning chatbots: conversational AI assistants that answer learner questions 24/7 and personalize the path - Enterprise & compliance training: internal academies, onboarding, and CEU-eligible programs PLATFORMS I WORK WITH: LearnWorlds · Absorb · TalentLMS · Docebo · Cornerstone · SAP SuccessFactors · Litmos · Kajabi · Thinkific · Teachable · Moodle · Canvas · Open edX Authoring: Articulate Rise & Storyline · MindSmith · Adobe Captivate AI production: HeyGen · Synthesia · ElevenLabs HOW WE'D START: Send me a message with what you're trying to build or fix. I'll tell you honestly whether it's a quick project or a bigger build, recommend the right approach (even if it's not the most expensive one), and we'll jump on a quick call. To your success, Shibangsh

✅ 5+ experience in Game Development. ✅ Experienced in Unreal, Unity3D & ThreeJS ✅ Worked with both 2D & 3D Games along with VR & AR. ✅ Experienced in sensor based games like Depth Sensors & Medical Industry Sensors. Hello, everyone! My name is Sk Md Rakib. I am from Kolkata, India. I am a Game Programmer. I have over 5 years of experience in 3D & 2D Games for Mobiles, Web, PC, AR & VR. I work quickly and efficiently. I make Hyper Casual Games, Casual Games, FIrst Person Shooter & RPG games. Multiplayer is my speciality as I develop Lag Free Multiplayer. I also create Webservices for clients to enable Authentication. My skills: ► Game Programming ► Game Optimisation ► Plugin Development ► Web Development ► Mobile and Desktop App Development Tools and technology I use: ► Unity 3D ► Unreal Engine ► Oculus SDK ► ThreeJS ► Irrlicht & Ogre ► Figma/Adobe ► JIRA ► Notion ► React Native ► Ionic ► Kotlin ► Flutter ► React/Next ► Sql ► MongoDB ► Angular ► Vue ► PHP/Laravel ► Java Script ► Java Springboot ► Rule Engine Apart from game section I also provide solution on Website, App design and development. I use Flutter, React Native for cross platform app development . For web development I use MERN, MEAN, PHP stack basically .