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👋 Hello, I’m Sanjeev. With 13+ years of experience, I help startups and established companies build reliable, fast, and user-friendly CRMs, enterprise solutions, and e-commerce platforms. 💻 Front-End Expertise Angular, React, Vue & Ember.js → portals, dashboards, and CRMs ⚙️ Back-End Systems Laravel, Node.js, Ruby on Rails, PHP 🏢 CRM Solutions Workflow automation, Client portals, Custom CRMs 🛒 E-Commerce Solutions Custom builds for WordPress, Shopify, and Magento 🤖 Automation & Integrations Third-party integrations, Chatbots, Reporting systems ✨ Why Clients Choose Me ✅ 165+ successfully completed projects ✅ 13,500+ Upwork hours ✅ 100% Job Success ✅ Top Rated Plus Long-term trust, reliable updates, and transparent communication 💬 What Clients Say “Provided a good solution ahead of schedule.” “One of the best independent contractors I’ve ever dealt with—a superb communicator and coder.” “Knowledgeable Ember.js developer, consistently delivers.” 👉 Please get in touch with me or schedule a meeting to talk about your project if you're searching for a trustworthy developer to realize your ideas. #FullStackDeveloper #Angular #EmberJS #Laravel #NodeJS #RubyOnRails #CRMDevelopment #EcommerceDevelopment #Shopify #Magento #WordPress #AIAssistedDevelopment #WebDevelopment #EnterpriseSolutions #APIIntegration #Automation - Ember.js Developers & Programmers - CRM Developers - E-commerce Developers - Drupal Developers - Adobe Commerce (Magento) Developers - Drupal Developers

Full-Stack Developer | Next.js • Node.js • Scalable APIs • AI Integrations I help startups build reliable full-stack applications, scalable APIs, and production-ready backend systems using modern JavaScript frameworks and cloud infrastructure. My focus is writing clean, maintainable code that performs well under real usage, not just building prototypes. What I Do Best - Full-Stack Web Development - React / Next.js production applications - Scalable Node.js backend systems - Secure authentication, dashboards, and admin tools - Responsive, performance-optimized frontends Backend & API Development - REST APIs built with Node.js / Express / FastAPI - PostgreSQL and MongoDB database architecture - High-performance API design and async processing - Third-party API integrations and data pipelines AI & Data Systems - ML-powered backend services - Computer vision pipelines (OCR, face verification, liveness detection) - Model deployment and API integration for real applications Selected Projects AI-Based Identity Verification System - Built a multi-model KYC verification system integrating: - Face detection and face matching - OCR document extraction - Liveness detection - Implemented using FastAPI, Docker, and concurrent processing, supporting multiple simultaneous verification requests. Yacht Charter Search Platform - Developed a backend API system integrating NauSYS API v6 with: - 38+ advanced search filters - Async processing and aggregation pipelines - Real-time data queries for yacht availability - Improved backend performance by ~40%. Care4Crisis – Blockchain Donation Platform - Built a Web3 donation system using React and Node.js with: - Dual blockchain integration - Automated smart contract fund release - 1000+ verified on-chain transactions How I Work - Clear technical planning before development - Clean, maintainable architecture - Performance-optimized code - Consistent communication and updates Tech Stack Frontend React • Next.js • TypeScript • Tailwind CSS Backend Node.js • Express.js • FastAPI • REST APIs Databases PostgreSQL • MongoDB Tools Docker • Git • Postman • Cloud Deployments Availability Available 30–40 hrs/week Open to long-term SaaS development, backend engineering, and API projects. If you need a developer who can design systems, write clean code, and ship reliable software, feel free to reach out.

I'm a full-stack developer with over 6 years of experience building fast, scalable web applications using technologies like React.js, and Next.js on the frontend, and Node.js, Express.js, Django, Flask, and FastAPI on the backend. My experience includes working with MongoDB, PostgreSQL, MySQL, and Firebase, along with deploying applications using tools like Docker/Kubernetes, GitHub, AWS, Vercel, and Heroku. I focus on writing clean, maintainable code and creating responsive, user-friendly interfaces that ensure high performance and reliability. 💻 Tech Stack I Use 🎨 Frontend ⚛️ React.js, Next.js 🎀 Tailwind CSS, Bootstrap, CSS 📱 Progressive Web Apps (PWA) 🛠️ Backend 🟢 Node.js, Express.js 🐍 Python (Flask, FastAPI) 🔌 REST APIs, GraphQL, microservices, authentication systems 🗄️ Databases & DevOps 🗃️ MongoDB, PostgreSQL, MySQL, Firebase ☁️ AWS, Vercel, Render, Heroku, Docker, Kubernetes, Terraform 🔧 Git & GitHub (team workflows, PRs, CI/CD integration) ✨ Additional Skills: → Payment Gateway Integrations: Seamless integration of various payment systems. → Messaging Protocols: MQTT & AMQP for real-time communication. → Caching: Redis for enhancing application performance. 🔹 My Development Process 1️⃣ Discovery Call – 💬 Understand your vision & requirements 2️⃣ Project Planning – 📅 Define timelines & milestones 3️⃣ Design & Development – 🎨 Regular updates & live previews 4️⃣ Testing & Launch – ✅ QA testing & smooth deployment 5️⃣ Ongoing Support – 🔄 30 days of free maintenance included 🚀 Ready to Start Your Project? Let's discuss how I can help transform your ideas into reality. I offer FREE consultation calls to understand your needs and provide a detailed project roadmap.

I am a Full Stack Developer with professional experience since 2014, delivering high-quality web, mobile, and AI-powered applications for startups, businesses, and enterprise clients. Throughout my career, I have worked as a Front-End Developer, Back-End Developer, and Team Lead, successfully managing projects from concept to deployment. ## Technical Expertise ### Frontend Technologies * Next.js, React.js, Vue.js, Nuxt.js, Angular, Angular Material * JavaScript, TypeScript, HTML5, CSS3 * Tailwind CSS, Bootstrap, Material UI, Shadcn/UI * jQuery, AJAX, Sass/SCSS * Responsive Web Design * PSD/Figma/XD to Pixel-Perfect HTML * Interactive UI, Animations, and Performance Optimization ### Backend Technologies * Node.js, Express.js, Fastify, Sails.js * Python * REST APIs, GraphQL, WebSockets * Authentication (JWT, OAuth, Session-Based Authentication) * Microservices Architecture * Firebase (Authentication, Firestore, Cloud Functions, Cloud Messaging) * Supabase (Authentication, PostgreSQL, Realtime, Storage, Edge Functions) ### AI & Automation * OpenAI APIs * ChatGPT Integrations * AI Chatbots and AI Assistants * LangChain * Retrieval-Augmented Generation (RAG) * Prompt Engineering * Vector Databases * AI Workflow Automation * Speech-to-Text and Text-to-Speech Integrations * LLM-powered Applications * MCP Servers and AI Tool Integrations ### Databases * MongoDB * PostgreSQL * MySQL * SQLite * SQL * Firebase Firestore * Supabase PostgreSQL * Mongoose * Sequelize ORM * Prisma ORM ### CMS & E-commerce * Shopify (Custom Apps, Theme Development, API Integrations) * WordPress (Custom Themes and Plugins) ### Mobile Development * Ionic Framework * Progressive Web Apps (PWA) ### DevOps & Cloud * Git, GitHub, GitLab * Docker * Nginx * Linux Servers * VPS Deployment * CI/CD Pipelines * PM2 * SSL Configuration * AWS, DigitalOcean, Hostinger VPS * Firebase Hosting * Supabase Platform ## What I Deliver ✔ Clean, scalable, and maintainable code ✔ Modern and intuitive UI/UX experiences ✔ Responsive and SEO-friendly applications ✔ AI-powered solutions and workflow automation ✔ Secure backend architecture with Firebase and Supabase integrations ✔ End-to-end development from concept to deployment ✔ Fast communication and on-time delivery ✔ Long-term technical partnership and support I am currently working as a full-time freelancer and am open to both short-term and long-term collaborations. My goal is to help clients build robust, scalable, and impactful digital products that drive business growth while leveraging modern web technologies, cloud platforms like Firebase and Supabase, and AI capabilities.

🚀 Bringing Your Ideas to Life with a Visionary Full Stack Developer Hi there! I’m Basant Kumar Singh, a passionate Full Stack Developer with over 12 years of experience in transforming groundbreaking ideas into seamless, high-performance web applications. My focus is on delivering flawless user experiences and robust backend solutions that not only meet but exceed your expectations. Whether you're looking for cutting-edge technology or a partner to scale your web applications, I have the expertise to bring your vision to life. 🔧 What I Can Do for You: Scalable Backend Solutions: Mastery in Node.js, Nest.js, SpringBoot (Java), PHP (Laravel), Python, AWS Lambda, and GraphQL ensures the creation of highly efficient and scalable server-side applications tailored to your needs. Cloud Services Expertise: Leverage the power of AWS (EC2, S3, Lambda, RDS, DynamoDB, CloudFront) to build secure, reliable, and scalable applications that grow with your business. I also work with Azure, Google Cloud, and DigitalOcean for flexible deployment options. Advanced Search & Analytics: Integrate Elasticsearch and Kibana to provide fast, accurate search functionality and powerful data analytics that give you insights into user behavior and application performance. Dynamic Frontend Development: Craft intuitive, responsive interfaces with React.js, Next.js, Vue.js, HTML, and CSS. I also excel with Tailwind CSS, Bootstrap, and Material UI to create visually appealing, user-friendly designs. High-Performance Data Management: Expertise with MongoDB, DynamoDB, MySQL, PostgreSQL, and Firebase/Firestore, ensuring your data is handled securely and efficiently. Optimized Caching & Messaging: Use Redis for ultra-fast data caching and integrate RabbitMQ and Kafka for robust, scalable messaging systems—perfect for building real-time, high-volume applications. End-to-End Testing Excellence: I rigorously test with tools like JEST, Mocha, and Puppeteer to ensure your application runs smoothly and performs flawlessly across all devices. 💡 Why You Should Work with Me: Proven Client Satisfaction: I’m proud of my track record with 100% client satisfaction—my clients love the quality, efficiency, and reliability I bring to every project. Innovative Problem Solver: I approach each challenge with creativity and precision, ensuring you get a solution tailored to your unique needs. Forward-Thinking: Always staying up-to-date with the latest industry trends and technologies, I guarantee solutions that are modern, scalable, and future-proof. Collaborative & Transparent: I believe in building strong relationships through clear communication, collaboration, and a shared vision for success. 🌟 What You Can Expect from Me: Whether it's building a custom solution, optimizing your web performance, or streamlining your backend infrastructure, my approach is client-centric. I aim to add real value to your project while providing a seamless experience from start to finish. Let’s Bring Your Project to the Next Level! I’m excited to help you turn your ideas into reality. Reach out today, and let’s discuss how I can contribute to the success of your next big project! Warm regards, Basant Kumar Singh 😊

Backend Developer Specialist Expert with 8+ years of professional experience in industry, with special expertise below: Language: Nodejs, Nestjs, React, PHP Framework: Featherjs, SailsJs, Loopback, ExpressJS, NestJs, hapijs, fastify, angular, react, electron Design Pattern: MVC, OOP, Methodology: Agile, Scrum, JIRA, Gitflow Tools: Bitbucket, Gitlab, github. Database: mongodb, postgre, mysql, redis, elastic, Firebase Cloud & DevOps: AWS: Cognito, Lambda, EC2, ECS, S3, RDS, Amplify Vercel, Docker, Kubernetes, CI/CD ORMs: TypeORM, Prisma, Sequelize