Tran Van Loi

Frontend Engineer with 5 years of experience building enterprise SaaS and real-time web applications for international clients.

I am Tran Van Loi, a frontend engineer with 5 years of experience building enterprise SaaS and real-time web applications for clients across Japan, Korea, and the UK.

Years building production software systems
Enterprise clients served on a Japanese HR platform
WebSocket events processed per minute

Selected work

NovaShop, Crema and more

Let's work together

Open to remote roles & clients

Work history

Where I have shipped production software.

Freelance

March 2026 - Present

Frontend Engineer, Remote

Building a mobile-first grants assessment platform for an SME financing client.

FPT Software

February 2022 - February 2026

Frontend Engineer

Enterprise SaaS and real-time platforms for international clients in Japan and Korea, plus FPT in-house products.

DYNO

June 2021 - November 2021

Frontend Developer Intern

Built the camera-capture kiosk flow and admin dashboard for an AI face-recognition attendance product.

Toolkit

The stack I reach for.

A compact set of tools chosen for performance, maintainability, and team velocity.

React

TypeScript

Next.js

Node.js

TanStack Query

Redux

Tailwind CSS

NestJS

Stripe

Vitest

Cypress

Storybook

GitHub Actions

SonarQube

Docker

Supabase

Vercel

Writing

Notes on frontend performance and architecture.

AdvancedJuly 21, 202612 min read

JWT rotation, IDOR, and the security decisions behind NovaShop

Auth in NovaShop spans three layers: NestJS issues tokens, Next.js holds the cookies, middleware quietly refreshes. Most of the small decisions here are the ones skipped when you build auth 'quickly' - and the ones attacked most often in practice.

SecurityAuthNestJS

IntermediateJune 18, 20269 min read

NovaShop and the Next.js App Router caching problem: a real case study

Most Next.js tutorials stop at revalidate = 60. NovaShop draws the App Router's three cache layers explicitly and handles each one on purpose - including the parts Next.js documents poorly across the 15 → 16 shift.

Next.jsCachingApp Router

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