✋ Hi, I've been a web developer since 2016. For the last 8 years, I specialized in back-end REST Apis and front-end single-page application development. Since 2021 I mostly work on PETAL stack(Elixir, Phoenix, Tailwind, Alpine, Postgres). LiveView has become my most favorite way to develop Web app-no longer need to replicate data model from Back-end to Front-end side. ✔ Backend: Elixir/Phoenix/LiveView/Absinthe/Django/FastAPI/NodeJs ✔ Frontend: Vue/React with Vuex, Redux, SvelteKit ✔ HTML5, CSS3 with SCSS ✔ TailwindCSS, Material UI, Angular Flex-Layout, Vuetify, Bootstrap ✔ Toolings: npm, yarn, etc... ✔ Tests: Jest, Mocha, Chai, Cypress, TDD, Puppeteer, Cypress E2E ✔ Deployment: I can handle end to end deployment, whether it's Docker or NixOS Github: github.com/hoangbits 🎓 I have a Bachelor Degree in Software Engineering

With over a decade of experience in Healthcare IT Solutions, I specialize in transforming comprehensive and compliant software solutions tailored to the complexity of the medical domain. Throughout my career, I have demonstrated proficiency across the entire software development lifecycle, from initial consulting to project management, web & mobile application development, and ensuring regulatory compliance. With 12+ years of experience and a dedicated team of professionals, we excel in creating innovative and effective solutions tailored to the unique needs of the healthcare industry. Developing, implementing and understading the healthcare apps which must be reliable, secure, and user-friendly. Our focus is on developing applications that not only enhance patient care but also streamline healthcare operations and ensure compliance with industry regulations. Expertise Includes:- • Custom Healthcare Development • Hospital Information Management System (HIMS) • Telemedicine Platforms • Electronic Health Record (EHR) • Electronic Medical Record (EMR) • Lab Management • Laboratory Information System (LIS) • Patient Management System • Pharmacy Management System (PMS) • Radiology Information System (RIS) • HRMS AND PAYROLL Management • Order Management • OP Clinical Management (ICD 11) • Queue Management • IN- Patient Clinical Management • Ward Management and Asset Management • Customize Discharge Card • Revenue Sharing • OT Management • EMR Template (Standards) • TPA Management • Alerts & Notifications and SMS, Whats App AND Email Marketing • Nurse Workbench • LIS Integration • Customized Practice PAD, RX Writing, Print Preview • Advance MIS Report • Mobility Solutions (Doctor / Patient Application) • Data Analytics • HL7 Messaging and FHIR • Multi- Language Supports We have hands on experience in the latest technologies, and frameworks like JavaScript, Typescript, React.js, React Native, Node.js, Python, Express.js, Next.js, Nest.js, ASP.NET Core/MVC, C#, Angular, NoSQL/SQL, AWS and its services, Azure DevOps, AI Integration, REST/JSON/OAuth APIs, 3rd party APIs, Payment Gateway, etc. This enable us to develop robust and scalable solutions that meet the evolving demands of the healthcare industry. Moreover, my team and I specialize in implementing GDPR, HIPAA-compliant wellness and telehealth systems, ensuring the highest standards of data security and privacy. Our expertise also includes in healthcare interoperability using FHIR and HL7. Why Choose Me? - With a strong portfolio in healthcare web & mobile app development, I have successfully delivered projects that meet the complex demands of the healthcare sector. - I leverage the latest technologies and industry best practices to create solutions that drive progress and efficiency. - I work closely with you to understand your needs, ensuring that my solutions are aligned with your goals and requirements. - Me and my team is dedicated to delivering high-quality, reliable, and scalable applications that make a meaningful impact. Let’s discuss how we can establish business relation to develop cutting-edge healthcare applications that address your challenges and achieve your objectives. Contact me today to explore how we can bring your vision to life. Thank you!

I’m a Full Stack Developer with over 6 years of experience building high-quality websites, web applications, and mobile apps. I specialize in both frontend and backend development, and I’ve successfully delivered projects across a variety of industries, including: SaaS platforms
 Business process automation
 Real estate websites and CRMs
 Custom POS systems
 Booking and scheduling platforms
 Marketplace applications
 Custom dashboards and admin panels
 Custom ERP Software Healthcare and Fitness Tech Stack I Use: Frontend: React.js, Angular, Vue.js, React Native, JavaScript, HTML5, CSS3
 Backend: Node.js, Python, PHP, Sails.js
 Databases: MongoDB, MySQL, PostgreSQL, SQLite
APIs: RESTful APIs, GraphQL
 Cloud & DevOps: AWS, Firebase, Git
 Testing: Manual testing, debugging, performance tuning What I Offer: * Fast, reliable development * Clean and scalable code * Great communication (almost-native English) * Responsive UI with a focus on user experience * On-time delivery and strong deadline commitment * Full support during and after development * Flexible approach to feedback and changes
 Whether you need a custom SaaS app, a real estate portal, an ecommerce platform, or a booking system, I can help you build a solution that works beautifully and scales with your business. Feel free to reach out with your project idea. I’m always open to a conversation and ready to start.

I’m a Full-Stack Engineer with 10+ years of experience building production-grade web applications, now focused on AI-powered systems, LLM integrations, and scalable SaaS architectures. I don’t just build CRUD apps. I build systems that automate workflows, integrate AI models, and scale under real business load. What I Build - AI-powered SaaS platforms - LLM-integrated applications (OpenAI, Claude, custom workflows) - RAG (Retrieval-Augmented Generation) systems - Multi-tenant architectures - Microservices & API-first systems - Real-time and data-heavy applications AI / ML / LLM Expertise - OpenAI (GPT models, Assistants API, embeddings) - Claude AI integrations - RAG pipelines (vector databases + embeddings + semantic search) - Prompt engineering & system design - AI agents & workflow automation - Document ingestion + knowledge base systems - LangChain-style architectures Core Stack - Backend - Node.js (primary) - Express, Hapi, Loopback, Sails - Python (AI integrations & scripting) - REST APIs & microservices Frontend - React.js - JavaScript (ES6+) - HTML5, CSS3 - Databases - MongoDB - PostgreSQL - MySQL - DynamoDB - MS SQL - SQLite3 - Search & Data - ElasticSearch - Vector search architectures Testing - Mocha - Chai Payments & Integrations - Stripe, Braintree, PayPal, Razorpay, PayU, UPI, Paytm - Google APIs (Auth, Maps, Calendar, Docs) - Facebook, Twitter, LinkedIn, Instagram APIs DevOps & Infrastructure - Nginx, Apache - Unix-based VMs - GitHub, GitLab, Bitbucket - CI/CD workflows What You Can Expect - Clean, maintainable architecture - Clear communication - Business-focused solutions - Performance-first mindset - Secure and scalable systems If you're building AI-driven products, SaaS platforms, or modern web systems, I can help you design and ship them properly.

✅ 𝗠𝘆 𝘁𝗼𝗽 𝗽𝗿𝗶𝗼𝗿𝗶𝘁𝘆 𝗶𝘀 𝘁𝗼 𝗲𝗻𝘀𝘂𝗿𝗲 𝟭𝟬𝟬% 𝗰𝗹𝗶𝗲𝗻𝘁 𝘀𝗮𝘁𝗶𝘀𝗳𝗮𝗰𝘁𝗶𝗼𝗻 𝘄𝗶𝘁𝗵 𝗲𝘃𝗲𝗿𝘆 𝗽𝗿𝗼𝗷𝗲𝗰𝘁 I am well educated Sr Full Stack Developer having 7 years of experienced in handling the entire software development life cycle, and used to working with a wide variety of technologies. I have worked on many E-Commerce apps, Automation, SaaS-based, Crypto apps, Bloackchain, long term complex applications. I possess excellent communication, technical skills, time management skills, and innovative. ✅ 𝗦𝘁𝗿𝗼𝗻𝗴 𝗖𝗼𝗺𝗺𝗮𝗻𝗱 𝗢𝘃𝗲𝗿 Web Development | LAMP | MERN | Typescript | Payment Gateway | Spreedsheet | GoogleSheet | Inventory Management | Admin Panel | PPC | Automation | Blockchain | AI | Amazon AWS | MySQL | PostgreSQL | MongoDB | DevOps | CI/CD | Agile Development | Jira Management | Cloud Services | OpenAI | Scrum Master | Web Designing | Error Handling | PWA | GraphQL | DynamoDB | RDS | Firebase | SEO Integration | Ecommerce | Version Control | Git | Security and Privacy compliance | Scalability and Acceability ✅ 𝗙𝗿𝗼𝗻𝘁𝗲𝗻𝗱 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 HTML | Tailwind CSS | Bootstrap | Javascript | SCSS | ReactJS | VUE.JS | Angular | NEXTJS ✅ 𝗕𝗮𝗰𝗸𝗲𝗻𝗱 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 PHP Laravel | Codeigniter | Node | Express ✅ 𝗔𝗣𝗜'𝗦 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 & 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻 API's Development | Twilio APIs | Stripe APIs | Amazon SP-API | Knack API | Amazon APIs | SMM API | Trello api | Salesforce API | eBay API | Amazon Advertising API | ✅ 𝗗𝗲𝘃𝗢𝗽𝘀 Firebase | Loopback | Sails | Dockers | Heroku | AWS | DigitalOcean | Kubernates | Lamda | S3 | Ec2 ✅ 𝗪𝗵𝘆 𝗛𝗶𝗿𝗲 𝗠𝗲 Quality Code and Standard 100% Job Success Team Collaboration Problem Solving Good communication Solution Oriented Passionate Besides this, I can work alone as well as be a good team lead, Solution Architect. Happy to hear back from you. Cheers !

🚀 Do you need a Full-Stack Developer who can rescue failing projects, architect scalable cloud solutions, and deliver enterprise-grade applications on time? With 10+ years of experience serving US healthcare, legal tech, and enterprise clients, I specialize in transforming complex technical challenges into production-ready solutions that drive measurable business results. ✅ PROVEN RESULTS FOR CLIENTS: • Reduced infrastructure costs by 45% average through AWS serverless optimization • Rescued critical mobile app project from failure, delivering on iOS & Android • Led AI-powered surveillance system processing 10,000+ images daily with 98% accuracy • Delivered 5+ production applications with 100% on-time delivery rate • Streamlined legal invoice processing workflows, reducing processing time by 60% 💼 WHAT I DELIVER: 🔹 Enterprise Web Applications: Scalable SaaS platforms, ERP systems, healthcare portals 🔹 Cloud Architecture: AWS serverless solutions (Lambda, API Gateway, RDS, S3, Cognito) 🔹 AI & Computer Vision: License plate recognition, face detection, object tracking 🔹 Mobile Development: React Native cross-platform apps for iOS & Android 🔹 Legacy Modernization: Migrating monoliths to microservices, performance optimization 🔹 Real-time Systems: WebSocket applications, live dashboards, chat platforms 🛠️ MY TECH STACK: • Frontend: React.js, Angular (2-15), Next.js, TypeScript, Redux, RxJS, NgRx • Backend: Node.js (Express, NestJS, Sails.js), C# .NET Core, Ruby on Rails • Cloud/DevOps: AWS (15+ services), Docker, CI/CD (Jenkins, GitHub Actions), Terraform • Databases: PostgreSQL, MySQL, MongoDB, Redis, DynamoDB, SQL Server • AI/ML: TensorFlow, OpenCV, Computer Vision, OCR, Facial Recognition • APIs: RESTful, GraphQL, WebSocket, OAuth 2.0, Stripe, Third-party integrations 🏆 WHY CLIENTS CHOOSE ME: ✓ AWS Certified Developer (2019-2022) with hands-on experience across 15+ AWS services ✓ Strong track record with US enterprise clients in healthcare, legal tech, fitness industries ✓ Project rescue specialist – I've saved multiple failing projects from disaster ✓ Team leadership experience – mentored 10+ junior developers to senior positions ✓ Agile methodology expert with cross-functional team collaboration 📋 INDUSTRIES I'VE SERVED: Healthcare (HIPAA-compliant systems) | Legal Tech | Fitness & Wellness | Telecommunications | Co-working Spaces | E-commerce & Logistics 💡 MY APPROACH: I don't just write code – I partner with you to understand your business goals, architect the right solution, and deliver clean, maintainable code that scales. Whether you need to build from scratch, rescue a troubled project, or modernize legacy systems, I bring the technical expertise and business acumen to get it done right. Let's discuss how I can help transform your project vision into reality. Available for both short-term fixes and long-term partnerships.

Over two decades of building real products for real businesses. I take full ownership from the first conversation to the final deployment. Design, frontend, backend, mobile, infrastructure, and project management all handled personally by one engineer with full accountability and zero handoff gaps 𝐇𝐎𝐖 𝐈 𝐖𝐎𝐑𝐊 I am a vibe coder at heart. Give me a problem and I will find the fastest, cleanest path to solving it. I work with the most advanced AI coding tools available today including Cursor, Claude Code, GitHub Copilot, Windsurf, Cline, v0 by Vercel, Replit Agent, Devin AI, Aider, Tabnine, Supermaven, CodeRabbit, and Qodo. This means faster prototyping, smarter architecture, earlier bug detection, and more shipped in less time. No inflated timelines. No bloated teams. Just focused execution from someone who has been doing this for over a decade. I handle project management myself. I break down scope, set realistic milestones, communicate progress clearly, and keep delivery on track without you having to chase anyone. You stay informed at every stage without getting buried in technical noise. One point of contact from kickoff to launch. 𝐖𝐇𝐀𝐓 𝐈 𝐁𝐔𝐈𝐋𝐃 𝐀𝐍𝐃 𝐎𝐖𝐍 𝐄𝐍𝐃 𝐓𝐎 𝐄𝐍𝐃 Full stack web applications built with React, Next.js, Vue, Nuxt, and Svelte on the frontend paired with Node.js, NestJS, and FastAPI on the backend. I architect the database, set up the infrastructure, write the APIs, and handle deployment start to finish. Mobile applications built with React Native for both iOS and Android from a single codebase. I build fast, polished, production-ready mobile apps with clean navigation, offline support, push notifications, and full backend integration. Whether you need a standalone mobile app or a mobile companion to your existing web product, I handle it completely. Generative AI products and agent systems using GPT-4o, Claude, Gemini, and DeepSeek. I build custom Gen AI pipelines that go beyond basic chatbots into multi-step reasoning, document intelligence, semantic search with Pinecone and ChromaDB, and autonomous agents that execute real business tasks without human input. Voice AI integrations using ElevenLabs for realistic text-to-speech, voice cloning, and conversational voice agents. Workflow automation using n8n. I connect your tools, automate repetitive processes, and build pipelines that save your team hours every single week. Video processing and media pipelines powered by FFmpeg. HLS and DASH streaming, transcoding, thumbnail generation, subtitle embedding, and custom media workflows built for scale. Programmatic video generation using Remotion, including data-driven videos, automated content pipelines, and React-based video rendering at scale. SaaS products built with proper multi-tenant architecture, Stripe billing, role-based permissions, and onboarding flows that work in production, not just in demos. Browser automation, data pipelines, Chrome extensions, real-time systems with WebSockets and WebRTC, and background job infrastructure with Celery, Redis, and cron scheduling. 𝐖𝐇𝐎 𝐓𝐇𝐈𝐒 𝐖𝐎𝐑𝐊𝐒 𝐁𝐄𝐒𝐓 𝐅𝐎𝐑 Founders who need an AI-powered product live fast without burning budget on a full team. Businesses that want manual workflows replaced with intelligent systems running around the clock. SaaS companies ready to scale beyond their MVP without a costly full rewrite. Anyone who wants a single engineer owning the whole project with zero handoff gaps. 𝐀𝐈 𝐂𝐎𝐃𝐈𝐍𝐆 𝐓𝐎𝐎𝐋𝐒 𝐈 𝐔𝐒𝐄 𝐃𝐀𝐈𝐋𝐘 Cursor · Claude Code · GitHub Copilot · Windsurf · Cline · v0 by Vercel · Replit Agent · Devin AI · Aider · Tabnine · Supermaven · CodeRabbit · Qodo 𝐓𝐄𝐂𝐇 𝐒𝐓𝐀𝐂𝐊 React.js · Next.js · Vue.js · Nuxt.js · Svelte · TypeScript · Tailwind CSS · Node.js · NestJS · FastAPI · Django · Flask · Gen AI · n8n · FFmpeg · OpenAI · Claude · Gemini · DeepSeek · ElevenLabs · LlamaIndex · Pinecone · ChromaDB · PostgreSQL · MongoDB · Redis · Supabase · Firebase · Elasticsearch · AWS · GCP · Docker · Kubernetes · Vercel · Playwright · Puppeteer · Stripe · Twilio · Chrome Extensions · Manifest V3 · WebRTC · WebSockets . Remotion 𝐎𝐍𝐄 𝐋𝐀𝐒𝐓 𝐓𝐇𝐈𝐍𝐆 Over two decade years in this industry means I have seen what breaks products at scale, what wastes budget, and what actually ships. 𝑺𝒆𝒏𝒅 𝒎𝒆 𝒂 𝒎𝒆𝒔𝒔𝒂𝒈𝒆 𝒘𝒊𝒕𝒉 𝒘𝒉𝒂𝒕 𝒚𝒐𝒖 𝒂𝒓𝒆 𝒃𝒖𝒊𝒍𝒅𝒊𝒏𝒈 𝒂𝒏𝒅 𝑰 𝒘𝒊𝒍𝒍 𝒕𝒆𝒍𝒍 𝒚𝒐𝒖 𝒉𝒐𝒏𝒆𝒔𝒕𝒍𝒚 𝒊𝒇 𝑰 𝒂𝒎 𝒕𝒉𝒆 𝒓𝒊𝒈𝒉𝒕 𝒇𝒊𝒕.

I have 8+ years of experience in web programming I understand client requirements and try to fill those requirements at the appropriate time and suitable price. I have experience in different domains based on eCommerce, Health industries, Fitness portals, Job portals, Sass applications, E-learning sites, and social networking. My Skills include: # Front-end * JavaScript * Vue.js * Nuxt.js * Vuetify * VueX * TypeScript * SASS/LESS * Bootstrap * Material Design * CSS 3 * HTML 5 # Back-end * Laravel * Symfony * Yii * CodeIgniter * CakePHP * Node.js with Express.js, Koa, Loopback.js * MongoDB * NoSQL * PostgreSQL * Oracle # Tools * WebPack * Gulp # Testing * Mocha * PhantomJS. * PHP unit test. * Laravel Dusk. #CMS * Wordpress * Magento * OpenCart * Shopify Web Scraping I can scrape your data from the source you want and put it in the form you need it like any Database, Excel, PDF, Word, Google Sheets, and so on. I did web scraping projects in the past for example with these sources: - Copart - IAAI - Facebook - Twitter - Google - Apple Store - Android App Store - Investing.com - Nasdaq - CoinMarketCap - HistData Services - Reactive Laravel Apps with the TALL stack - Repository Design Patterns - Development of responsive interface for websites using HTML5, CSS3, Twitter Bootstrap, Less, Sass - Design of front-end architecture for single-page applications using Vue.js, React.js, AngularJs - Design of back-end architecture using popular server-side Laravel, Symfony, Yii, and Node.js frameworks like Express, Sails.js - Design of the full-stack architecture for single-page applications using Meteor, Telescope - Development of charts and diagrams using D3.js - Development using jQuery and all types of jQuery plugins - TDD using Mocha, Jasmine, Karma, Protractor, QUnit - Automation front-end minification, compilation, unit testing, and linting using Grunt or Gulp. - Administration of SQL databases: MongoDB, MySQL, PostgreSQL - Deployment of websites on Amazon AWS, Heroku Regards Vigen

I help SaaS founders and businesses add AI features to their web applications — chatbots, AI-powered search, document processing, and workflow automation — and build production-ready Laravel and Vue.js applications from scratch. ⭐ Top Rated | 100% Job Success | 4,700+ hours | 50+ completed projects | 10+ years of experience What I can do for you: ✅ AI Integration — Add OpenAI, Claude, or Gemini-powered features to your existing app: customer support chatbots, smart search (RAG), content generation, data extraction, and automation workflows ✅ Full-Stack Web Development — Complete SaaS platforms and web applications with Laravel, Inertia.js, Vue 3, and Tailwind CSS ✅ API Development & Integration — REST APIs, third-party integrations (Stripe, payment gateways, CRMs), and Node.js backend services ✅ Modernization & Maintenance — Upgrade legacy PHP/Laravel codebases, improve performance, fix bugs, and add new features to existing applications Why work with me: - I've been building web applications professionally since 2014 — long enough to have seen what breaks in production and how to avoid it - I'm a product builder, not just a coder: I've built and sold my own commercial web applications, so I understand budgets, deadlines, and what "done" actually means - Clear communication, honest estimates, and no surprises 🛠️ Tech stack: Laravel, PHP, Vue.js 3, Inertia.js, Nuxt, React, Node.js, Express, Tailwind CSS, MySQL, PostgreSQL, Redis, REST APIs, OpenAI API, Anthropic API, Git, Docker Let's discuss your project — send me a message and I'll respond within a few hours.

I have 5+ years of experience in developing secure and user-friendly web applications using the MERN stack. ✅ Accredited "Top-Rated Plus" developer ✅ Certified "Top 1%" Upwork tested developer ✅ Good Job Success Rate ✅ Excellent communication skills ✅ Excellent in Project Management ✅ Available for immediate start I have been developing and designing Web applications using an advanced JavaScript framework with my advanced full-stack development expertise. I love to program things that work in the real world and are useful for people in their businesses. I am professional, reliable, and responsible for the work I do. My proficient skill set includes the following: - ReactJS - NodeJS - NextJS - NestJS - Typescript - npm packages - HTML5 - CSS3 - Bootstrap - Blockchain - Crypto - Tailwind CSS - Redux - Material UI - jQuery - Webpack - REST API As a full-stack web developer, I play versatile roles while working with overseas clients. My roles start from business/requirement analysis, database architectural design, wireframing, preparing project development plans with pre-defined weekly deliverables, developing front-end UI, and using any of the advanced JavaScript frameworks (Angular/Vue/React). I have developed web applications from ground zero and have also performed bug fixing, enhancement, and optimization of existing applications and have used various Node JS frameworks such as Sails JS, Keystone JS, Express JS, and Loopback framework. I have a solid background in object-oriented programming as well as VueJS, ReactJS, NextJS, Angular, HTML, CSS, JavaScript, Jquery, etc. Factors that I always keep in mind while designing and developing a website are responsive front-end user interface, optimized back-end admin interface, optimized database queries, security techniques implementation, etc. Also following the DevOps model, I have hosted my enterprise-level application on dedicated servers as well as I have hosted applications on cloud servers such as - AWS EC2 and Azure for Microsoft. Let's connect to discuss your requirements.