Hire the Best Web Application Developers
in Vietnam

𝙇𝙚𝙩 𝙢𝙚 𝙩𝙚𝙡𝙡 𝙮𝙤𝙪 𝙬𝙝𝙮 𝙛𝙤𝙪𝙣𝙙𝙚𝙧𝙨 𝙖𝙣𝙙 𝙩𝙚𝙖𝙢𝙨 𝙗𝙧𝙞𝙣𝙜 𝙢𝙚 𝙞𝙣 𝙬𝙝𝙚𝙣 𝙩𝙝𝙚𝙮’𝙧𝙚 𝙗𝙪𝙞𝙡𝙙𝙞𝙣𝙜 𝙎𝙖𝙖𝙎 𝙖𝙣𝙙 𝙈𝙑𝙋𝙨. 👨‍💻 Senior Full Stack Developer (10+ years) focused on SaaS and MVP builds 🏅 AWS Certified Developer - Associate (Amazon Web Services / Cloud Computing) 🔨 Modern TypeScript stack: Next.js, NestJS, PostgreSQL, Redis 🚀 I build from idea to production, with clean architecture, your team can maintain ✔ Often brought in by founders for MVP launches, rebuilds 🤝 I work like a product partner, clear trade-offs, no BS As a Senior Full Stack Developer, I’m usually brought in for MVP builds, product rebuilds, and “this is breaking in production” moments. That’s the difference between hiring a Senior Full Stack Developer and hiring someone who only ships features. 𝗛𝗲𝗿𝗲’𝘀 𝘄𝗵𝗮𝘁 𝗜 𝗱𝗼: 𝟭. 𝙁𝙪𝙡𝙡-𝙎𝙩𝙖𝙘𝙠 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 🔹 I take your idea and turn it into a production-ready MVP or SaaS product, end to end 🔹 You get clean code, fast delivery, and documentation your team can actually use 𝟮. 𝗙𝗿𝗼𝗻𝘁-𝗘𝗻𝗱 (𝗥𝗲𝗮𝗰𝘁, 𝗡𝗲𝘅𝘁.𝗷𝘀 𝟭𝟱, 𝗧𝗮𝗶𝗹𝘄𝗶𝗻𝗱𝗖𝗦𝗦) 🔹 Dashboards and product UIs that feel fast and don’t fall apart as you grow 🔹 SSR and performance work to keep load times down and UX smooth 𝟯. 𝗕𝗮𝗰𝗸-𝗘𝗻𝗱 (𝗡𝗲𝘀𝘁𝗝𝗦, 𝗡𝗼𝗱𝗲.𝗷𝘀) 🔹 APIs, auth, permissions, and business logic built for real-world usage 🔹 Background jobs, queues, and webhooks that stay stable when requirements change 𝟰. 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲 (𝗣𝗼𝘀𝘁𝗴𝗿𝗲𝗦𝗤𝗟, 𝗣𝗿𝗶𝘀𝗺𝗮, 𝗗𝗿𝗶𝘇𝘇𝗹𝗲, 𝗥𝗲𝗱𝗶𝘀) 🔹 Database design, migrations, and query tuning for production performance 🔹 A clean data layer with Prisma or Drizzle, and Redis caching when it’s worth it 𝟱. 𝗖𝗹𝗼𝘂𝗱 (𝗔𝗪𝗦, 𝗩𝗲𝗿𝗰𝗲𝗹) 🔹 Reliable deployments with clean environments and predictable releases 🔹 AWS when you need real control, Vercel/Railway/Render when you need speed and iteration 𝟲. 𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲 🔹 I turn founder specs into a clear technical plan your team can execute 🔹 I make the trade-offs early so you don’t pay for them later with rewrites 𝗖𝗼𝗺𝗺𝗼𝗻 𝗽𝗿𝗼𝗷𝗲𝗰𝘁𝘀 𝗜 𝗵𝗮𝗻𝗱𝗹𝗲 𝟭. SaaS product development (A → Z ownership) 𝟮. MVP builds with Next.js and TypeScript under real production constraints 𝟯. Backend systems with NestJS (auth, APIs, business logic) 𝟰. PostgreSQL and Redis performance fixes and data modeling 𝟱. Background jobs, queues, and async workflows 𝟲. AWS deployments and production stabilization 𝟳. Debugging slow, breaking, or unreliable systems 𝟴. Codebase cleanup: refactors, structure, release safety 𝟵. Technical consultation before you build the wrong thing in your SaaS 𝗧𝗼𝗼𝗹𝘀 𝗜 𝘂𝘀𝗲 ✓ Next.js, React, TypeScript, Tailwind CSS ✓ Node.js, NestJS ✓ PostgreSQL, Redis ✓ Prisma ORM, Drizzle ORM ✓ AWS (Certified), Vercel, Supabase, Neon ✓ Git, production-grade workflows 𝙈𝙮 𝗖𝗲𝗿𝘁𝗶𝗳𝗶𝗰𝗮𝘁𝗶𝙤𝙣𝙨 🏅 AWS Certified Developer - Associate (Amazon Web Services / Cloud Computing) 🏅 Upwork Skill Certification - React Front-End Development 🏅 IBM - Full Stack Software Developer Assessment 🏅 IBM - Software Engineering Essentials (Software Architecture / Design) 🏅 IBM - Intermediate Back-end Development (Node.js + MongoDB) 🏅 IBM - Node and Express Essentials (Auth / Routing / npm) 🏅 IBM - Full Stack Software Developer Assessment When we work together, I will make sure your MVP is built the right way: clean code, strong architecture, and a solid foundation your team can maintain. 𝙄𝙛 𝙮𝙤𝙪 𝙬𝙖𝙣𝙩 𝙖 𝙎𝙚𝙣𝙞𝙤𝙧 𝙁𝙪𝙡𝙡 𝙎𝙩𝙖𝙘𝙠 𝘿𝙚𝙫𝙚𝙡𝙤𝙥𝙚𝙧 𝙬𝙝𝙤 𝙘𝙖𝙣 𝙤𝙬𝙣 𝙮𝙤𝙪𝙧 𝙎𝙖𝙖𝙎 𝙗𝙪𝙞𝙡𝙙 𝙤𝙧 𝙈𝙑𝙋, 𝙧𝙚𝙖𝙘𝙝 𝙤𝙪𝙩. 𝙏𝙝𝙚 𝙗𝙚𝙨𝙩 𝙬𝙖𝙮 𝙩𝙤 𝙨𝙩𝙖𝙧𝙩 𝙞𝙨 𝙬𝙞𝙩𝙝 𝙖 𝙘𝙝𝙖𝙩. ➡️ Keywords: Full Stack Developer, SaaS Developer, SaaS MVP Development, Web Application Developer, MVP Developer, Backend Developer, API Development, Node.js Developer, NestJS Developer, React Developer, Next.js Developer, PostgreSQL, Redis, Database Design, Cloud Deployment, AWS Developer, Software Architecture, Startup SaaS, Product Development, Production Systems

⭐ 21+ jobs, 100% 5★ testimonials, 43+ total hours ⭐ Total 6+ years experience, working on 21+ projects in Software Development ✅ Programming Languages/Framework: Java, Spring Boot, Golang, ReactJS, NodeJS ✅ 6+ years of experience as a full-stack developer. Work with the system with several million users active every day. I graduated with an excellent Bachelor's degree in Computer Science in April 2019. I have worked on many projects in many fields like upload media, data processing, and product development. I have worked for a big company in Vietnam. I have strong experience with developing highly scalable, performance, and modern Microservices-based platforms and mobile/web APIs. Primary services that I offer now on Upwork include building websites, API, and Tools.

👨‍💻 Fullstack Node.js Developer (4+ years) specializing in high-performance AI & LLM Integration and MVP builds. 🛠️ Core Tech Stack: Node.js, Express, TypeScript, PostgreSQL, and React & NextJS. 🔌 Integration Expert: Deep experience with ZaloPay, disbursement APIs, and secure webhook architectures. 🚀 Production-Ready: I don't just ship features; I build secure, maintainable systems that survive real-world traffic. 🤝 Technical Partner: I bridge the gap between business requirements and clean, scalable code. As a Fullstack Node.js Developer, I am the person you call when you need to move from a prototype to a production-grade system. Whether it’s architecting a complex payment flow or stabilizing a backend that’s struggling to scale, I focus on the "how" as much as the "what." Here is how I add value to your project: 1. Full-Stack Node.js Development I take ownership of the entire lifecycle. You get a codebase that is modular, documented, and easy for your internal team to manage long after the initial launch. 2. Secure Backend & API Architecture (Node.js, Express) Designing robust APIs that handle authentication, complex permissions, and business logic. Specialized in secure third-party integrations (ZaloPay, custom disbursement systems) including manual signature generation and sandbox-to-production migration. 3. Frontend Experience (React, JavaScript/TypeScript) Building responsive, fast-loading dashboards and user interfaces that communicate perfectly with the backend. Focusing on clean state management and intuitive UX that doesn’t lag under heavy data. 4. Database & Infrastructure (PostgreSQL, MongoDB, Redis) Designing relational schemas that actually scale. Optimizing queries and implementing caching layers to ensure your app stays fast as your user base grows. 5. System Security & Reliability Implementing secure web app standards to prevent common vulnerabilities and unauthorized access. Managing background jobs and async queues that stay stable when your requirements change. Technical Toolbox Backend: Node.js, Express, NestJS, TypeScript Frontend: React, HTML5, CSS3, Tailwind CSS Database: PostgreSQL, MongoDB, Redis Integrations: Payment API, Disbursement Systems, RESTful Webhooks Tools: Git, Docker, Postman, Linux Environment When we work together, you aren't just hiring a coder; you're hiring an engineer who cares about the security and longevity of your product. I make the technical trade-offs early so you don't have to pay for expensive rewrites later. 🔑 Keywords: Full Stack Developer, SaaS Developer, SaaS MVP Development, Web Application Developer, MVP Developer, React Developer, Next.js Developer, Node.js Developer, NestJS Developer, Backend Developer, PostgreSQL Developer, Redis, Cloud Deployment, AWS Developer, Software Architecture, Startup SaaS

Loc, Trusted Innovation Leader Over 10 years of experience leading software development teams at PSA SOLUTIONS. We specialize in building innovative solutions across various platforms, including mobile (Android & iOS), web, and enterprise applications. My Expertise: Strategic product development Software development (Java, HTML) Mobile application development (Android, iOS) Project management and team leadership Our Passion: We're a team of dedicated engineers and developers with a shared love for crafting exceptional software. We leverage our diverse experience (10+ years in software development, 4+ years in Java enterprise applications, 8+ years in mobile apps, 3+ years in product design) to tackle projects of all sizes – from small businesses to large corporations. Ready to Collaborate? Explore our portfolio to see past projects, and don't hesitate to contact us for a full-stack development team with expertise in Android, iOS, and web platforms.

I working as a web developer. I have 4 years of experience in the frontend (Vuejs, Vuetify, Nuxt..) and 3 years of experience in the backend (java, spring framework), and 2 years of experience in AWS (Cloudformation, CloudFront, EC2, Lambda, S3, Kenesis, WAF...)

With over 20 years of diverse development experience, I'm now fully dedicated to my IT career, culminating in the completion of my MSc in IT in January 2025. My expertise lies in full-stack web development, where I've successfully built applications using Python Django / Django CMS, and ASP.NET/EF C#, leveraging SQL databases and modern front-end technologies like HTML/CSS/JavaScript. I'm proficient in developing Python web scrapers using Selenium, and while I've often worked independently, I'm well-versed in collaborative tools such as Jupyter Notebooks and GitHub, and am adept at integrating into team workflows within the SDLC. My recent coursework in Machine Learning, Data Science with Python, Business Intelligence Analysis, and SASS reflects my commitment to continuous learning and my eagerness to apply these skills in professional projects. My current focus is on Python Django full-stack development and web scraping, but I'm always seeking new challenges to enhance my technical abilities. I also offer expertise in refactoring, documentation, testing, and debugging, as well as translation services between English and French. If you're looking for a seasoned developer with a broad skill set and a proactive approach, I'm ready to contribute to your projects.