Hoang Huy V.
#1 Full-Stack SaaS MVP Developer | AI-Powered Apps | .NET, Next.js
๐ ๐๐ฒ๐น๐ฝ ๐๐ผ๐๐ป๐ฑ๐ฒ๐ฟ๐ ๐ฉ๐ฎ๐น๐ถ๐ฑ๐ฎ๐๐ฒ ๐๐ฒ๐ณ๐ผ๐ฟ๐ฒ ๐ง๐ต๐ฒ๐ ๐๐๐ถ๐น๐ฑ โ ๐ฆ๐ผ ๐ง๐ต๐ฒ๐ ๐๐ผ๐ปโ๐ ๐ช๐ฎ๐๐๐ฒ ๐ง๐ถ๐บ๐ฒ ๐ข๐ฟ ๐ ๐ผ๐ป๐ฒ๐ ๐๐๐ถ๐น๐ฑ๐ถ๐ป๐ด ๐ง๐ต๐ฒ ๐ช๐ฟ๐ผ๐ป๐ด ๐ฃ๐ฟ๐ผ๐ฑ๐๐ฐ๐ ๐ซโณ ๐ซ๐ธ ๐ซ Not just prototypes. ๐ซ Not just demos. โ Real products that can grow. Over the last 7+ years, Iโve been working as a full-stack engineer and backend architect building SaaS platforms, AI tools, and automation systems for startups and product teams. ๐ Iโm also a ๐ง๐ผ๐ฝ ๐ฅ๐ฎ๐๐ฒ๐ฑ freelancer on Upwork trusted by companies across: โข ๐บ๐ธ United States โข ๐ฆ๐บ Australia โข ๐จ๐ฆ Canada โข ๐ธ๐ฌ Singapore โข ๐ Southeast Asia โโโโโโโโโโโโโโโโโโ ๐ ๐ช๐ต๐ฎ๐ ๐ ๐ฑ๐ผ ๐ฏ๐ฒ๐๐ I build AI-powered SaaS products and scalable platforms from idea to production. Typical journey I support: โก Concept โ MVP โ Production โ Scale Many founders reach out to me when they are building: โ ๐ค AI SaaS platforms โ ๐ง LLM-powered applications โ โ๏ธ automation systems โ ๐ช SaaS marketplaces โ ๐ scalable startup platforms โ ๐ข enterprise web applications My focus is always the same: build stable systems that support real users. โโโโโโโโโโโโโโโโโโ ๐ค ๐๐ ๐๐๐๐๐ฒ๐บ๐ ๐ ๐ฏ๐๐ถ๐น๐ฑ โ ๐ง LLM applications powered by OpenAI โ ๐ RAG pipelines for knowledge systems โ โก AI automation workflows โ ๐ฏ AI recommendation & matching engines โ ๐ document AI and semantic search systems These are not experimental demos. They are designed for real production products. โโโโโโโโโโโโโโโโโโ ๐ ๐๐๐น๐น-๐๐๐ฎ๐ฐ๐ธ ๐ฎ๐ฟ๐ฐ๐ต๐ถ๐๐ฒ๐ฐ๐๐๐ฟ๐ฒ My development philosophy is backend-first engineering. I focus on systems that are: โก scalable ๐งฑ maintainable ๐ high-performance ๐ secure โโโโโโโโโโโโโโโโโโ โ๏ธ ๐๐ฎ๐ฐ๐ธ๐ฒ๐ป๐ฑ ๐๐๐ฎ๐ฐ๐ธ โ ASP.NET Core (.NET 6+) โ Node.js โ NestJS Architecture: โ Clean Architecture โ SOLID principles โ Microservices systems โ CQRS & MediatR patterns Infrastructure: โ Hangfire โ background processing โ SignalR โ real-time systems Data layer: โ PostgreSQL โ SQL Server โ Redis caching โ FusionCache two-level caching Security: โ JWT authentication โ OAuth integrations โ Role-based authorization (RBAC) DevOps: โ CI/CD pipelines โ GitHub Actions โ Azure DevOps โโโโโโโโโโโโโโโโโโ ๐จ ๐๐ฟ๐ผ๐ป๐๐ฒ๐ป๐ฑ ๐๐๐ฎ๐ฐ๐ธ โ React โก Next.js ๐ TypeScript UI systems: โ TailwindCSS โ Material UI โ Ant Design Focus areas: ๐ performance optimization ๐ SEO optimization โก scalable frontend architecture โโโโโโโโโโโโโโโโโโ ๐ฏ ๐ช๐ต๐ฒ๐ฟ๐ฒ ๐ ๐ฎ๐ฑ๐ฑ ๐๐ต๐ฒ ๐บ๐ผ๐๐ ๐๐ฎ๐น๐๐ฒ Many founders contact me when: โ their MVP is unstable โ their product is half-built โ their previous developer disappeared โ their system cannot scale โ their AI prototype needs real engineering Often the product started with tools like: โ v0 โ Lovable โ Replit โ no-code builders Thatโs completely fine. But when the system needs real architecture, performance, and stability, I step in to rebuild or scale it properly. โโโโโโโโโโโโโโโโโโ ๐ ๐ฅ๐ฒ๐๐๐น๐๐ ๐โ๐๐ฒ ๐ฑ๐ฒ๐น๐ถ๐๐ฒ๐ฟ๐ฒ๐ฑ ๐ SaaS platforms used by 10,000+ users โก reduced API latency by 70% using Redis caching ๐ค AI automation systems saving teams 20+ hours per week ๐ delivered startup MVPs in 4โ8 weeks โโโโโโโโโโโโโโโโโโ ๐๐ผ๐ ๐ ๐๐ผ๐ฟ๐ธ Clients enjoy working with me because I think like a product engineer, not just a coder. My approach: ๐ฃ clear and direct communication ๐ง architecture-first thinking ๐ฐ business-driven technical decisions ๐ก proactive product suggestions ๐ long-term scalability mindset โโโโโโโโโโโโโโโโโโ ๐ ๐ฑ๐ผ๐ปโ๐ ๐ท๐๐๐ ๐๐ฟ๐ถ๐๐ฒ ๐ฐ๐ผ๐ฑ๐ฒ. I design systems that support real users, real traffic, and real business growth. โโโโโโโโโโโโโโโโโโ If you're building an AI SaaS or startup product, feel free to reach out. Send me a message with: ๐ก your idea ๐งฑ your current progress โ the biggest technical challenge youโre facing Iโll tell you honestly whether I can help and how we can move forward.