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bat.dev

.net backend developer

Bui Anh Tu

.NET Backend Developer building scalable, secure APIs with ASP.NET Core and C#. I work on maintainable backend systems and reliable integrations for platforms across Vietnam and Southeast Asia.

Building scalable backend systems with clean, maintainable code.

I am a .NET backend developer with over 3 years of experience building scalable, high-performance APIs using ASP.NET Core, C#, and Entity Framework Core. I focus on clean, maintainable code, secure backend systems, database optimization, and reliable integrations for production platforms serving 60,000+ users across Vietnam and Southeast Asia.

More about me
C#LINQSQLHTMLCSSASP.NET Core.NET CoreEntity Framework CoreREST APIsJWT AuthenticationSSO IntegrationSignalR

Current focus

Building

Scalable REST APIs, backend modules, and integration workflows

Learning

Backend architecture, performance tuning, deployment, and system design

Writing

Notes about .NET, databases, API design, and engineering decisions

Based in

Vietnam, working async-friendly

Selected projects

personal site

bat.dev portfolio

A personal site for projects, writing, CMS-managed content, and lightweight AI experiments.

Built with the App Router, server components, Keystatic content, Supabase-backed published items, and a restrained design system.

Next.js 16React 19Tailwind v4Keystatic

ai feature

Portfolio assistant

A chat feature that answers questions about background, projects, skills, and site content.

Uses a streaming API, Gemini, optional local/provider fallbacks, and Supabase pgvector RAG over embedded CMS content.

GeminiSupabase pgvectorNext.js API RoutesRAG

agent project

AI news digest workflow

A workflow for collecting trusted tech sources and drafting Vietnamese digest content.

Fetch, extract, dedupe, rank, draft, review, and publish steps are kept behind an explicit admin approval gate.

MastraGeminiSupabaseAuth.js

What I bring to a project

Backend

Scalable API design, maintainable service boundaries, secure flows, and production-ready integrations.

Application

Server-rendered pages, API routes, auth, persistence, and deployment-ready architecture.

Systems

Messaging, caching, data workflows, admin review gates, and reliable operational tooling.

Learning

Technical notes and digests about backend design, performance, deployment, and engineering trade-offs.

Latest writing

All posts