Full-Stack Software Engineer (.NET 8 / C# • TypeScript) based in Ho Chi Minh City, Vietnam.
Specializing in Clean Architecture backends (.NET 8), type-safe modern web applications (TypeScript / Next.js), client-side cryptographic security, and high-efficiency automation pipelines.

Portfolio • LinkedIn • GitHub • Email

• 🎵 LyricPhonics — Full-stack AI multimodal cover engine & piano studio.

  • Stack: .NET 8 LTS, Clean Architecture, Next.js 14 (TypeScript), EF Core, Neon PostgreSQL, Cloudflare R2, Polly v8.
  • Highlights: Built with Uncle Bob's Clean Architecture; resilient sliding-window rate-limiting key pool (zero 429s); military-grade client crypto (PBKDF2 100k + AES-256-GCM); $O(\log N)$ binary search 60fps lyric sync; 25/25 unit tests passed.

• 🛍️ ShopOps — All-in-one operations intelligence & financial SaaS for global e-commerce sellers.

  • Stack: Next.js 16 (Turbopack), React 19, TypeScript, MongoDB Atlas, Web Crypto API, Groq LLM.
  • Highlights: End-to-end TypeScript type safety; client-side Zero-Knowledge E2EE (credentials never touch server unencrypted); multi-key rotation engine with traffic smoothing for Etsy API v3.

• 🤖 K12Online Knowledge System & AI Assistant — Enterprise sub-millisecond RAG platform.

  • Stack: Python, curl_cffi (TLS/JA3 Impersonation), Next.js 15, Upstash Redis, Gemini Flash.
  • Highlights: High-throughput pipeline extracting 383 articles in 3s bypassing Cloudflare anti-bot; In-Memory RAG (<1ms latency); Pre-baked Warm Cache Streaming (0 token cost for 67k-char manuals); slashed API expenses by >70%.

• ⚡ ASMLink Desktop RPA Suite — Multi-threaded desktop automation & verification suite.

  • Stack: C# (.NET 8), Selenium WebDriver, MailKit, Task Parallel Library (TPL).
  • Highlights: High-throughput concurrent worker automation handling multi-inbox IMAP/POP3 verification and anti-fingerprint browser workflows.

Focused on architectural integrity, high concurrency, strict type-safety, and cost-efficient engineering.

• Backend & Core (.NET): C# (.NET 8/9 LTS), ASP.NET Core Minimal APIs, Clean Architecture, Entity Framework Core, LINQ, Polly v8 Resilience, Asynchronous Task Parallelism, Dependency Injection.
• Frontend & Modern Web: TypeScript (Strict), Next.js 14/15/16 (App Router, RSC), React 19, Tailwind CSS v4, Web Audio API, Canvas 2D API.
• Databases & Cloud Storage: PostgreSQL (Neon), SQL Server, Redis (Upstash & In-Memory Caching), MongoDB Atlas, Cloudflare R2 (S3-compatible).
• Security & Systems: Client-Side Zero-Knowledge E2EE, Military-Grade Crypto (PBKDF2 + AES-256-GCM), TLS/JA3 Fingerprint Impersonation, Rate-Limiting.
• Tooling & Environments: Docker, Git & GitHub, Postman, Linux, Vercel, Visual Studio, VS Code.

I'm actively looking for Full-Time Software Engineer (.NET / TypeScript / Full-Stack) opportunities and high-impact engineering collaborations. Feel free to reach out via LinkedIn or Email!