Senior Frontend Engineer — React, TypeScript, AI Platforms

HOANGLE

Senior Frontend Engineer

Engineering calm into fast-moving products with system thinking and delightful user experience

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ReactTypeScriptViteNext.jsZustandTanStack React QueryTailwind CSSReact Hook FormReactTypeScriptViteNext.jsZustandTanStack React QueryTailwind CSSReact Hook FormReactTypeScriptViteNext.jsZustandTanStack React QueryTailwind CSSReact Hook FormReactTypeScriptViteNext.jsZustandTanStack React QueryTailwind CSSReact Hook Form

ZodReact FlowRemotionRadix UIReact NativeNode.jsClaude CodeFigmaZodReact FlowRemotionRadix UIReact NativeNode.jsClaude CodeFigmaZodReact FlowRemotionRadix UIReact NativeNode.jsClaude CodeFigmaZodReact FlowRemotionRadix UIReact NativeNode.jsClaude CodeFigma

Indie Products

SaaS I built and run solo — live and serving real users.

Waitlist

Giáo Án AI

2026

Draft a full lesson plan in 2 minutes.

AI tool for Vietnamese primary school teachers to draft lesson plans, write student evaluations, and generate exams compliant with CV 2345 and the Kết Nối Tri Thức curriculum. Replaces 2–4 hours of nightly paperwork with a few minutes.

▸327 lesson templates (grades 1–5, CV 2345 compliant)
▸Auto-generate TT27 student evaluations to Excel
▸AI-built test matrices with answer keys

Templates

327

Grades

1–5

Exports

docx / xlsx

Next.js 16 · React 19 · Claude API · Neon Postgres · Drizzle · Clerk

Visit site

giaoanai.com

Beta

ASO Expert

2025

Track iOS keyword rankings across 56 countries.

iOS keyword-ranking dashboard tracking across 56 countries with AI-powered optimization suggestions. Built for indie devs and mobile marketers who need App Store visibility without enterprise-tool pricing.

▸Real-time keyword tracking across 56 countries
▸AI-powered keyword optimization suggestions
▸Multi-app portfolio with competitor benchmarking

Countries

Platform

iOS

Stack

Mobile + Web

Expo SDK 55 · Next.js 15 · Express · Neon Postgres · Clerk · RevenueCat

Visit site

asoexpert.cc

Selected Work

Projects with impact & craft.

2025

Vidsheets — Batch Video Production

GEN

Designed and built Vidsheets at GEN — a spreadsheet-style batch video generation system that lets users produce hundreds of personalized videos from a single template. Part of a larger performance overhaul that achieved 86% bundle size reduction and 73% chunk size reduction.

86%

Bundle size reduction

ReactTypeScriptViteZustandTanStack React Query+5

View case study

Web

2022–2025

Digital Onboarding Checklist

Employment Hero

Engineered and implemented a digital onboarding checklist at Employment Hero that reshaped how new organisations get started. Working closely with product and design, I rebuilt the entire flow — reducing setup time by 50% and accelerating time-to-value for customers.

50%

Setup time reduction

React.jsNext.jsTypeScriptReact Hook FormRedux+4

View case study

Tools

2022–2025

Snowflakes — UI Standardization

Employment Hero

Proposed and led the Snowflakes initiative at Employment Hero to unify the internal UI library. Audited components, rebuilt patterns, documented standards, and aligned teams on a single UI language — resolving 50+ inconsistencies across the product.

50+

Inconsistencies resolved

React.jsTypeScriptStorybookshadcn/uiNext.js+1

View case study

Web

2022–2025

React Native Mobile App

Employment Hero

Contributed to Employment Hero's React Native mobile application. Developed reusable design system components including a cross-platform Carousel, and implemented secure authentication flows with 2FA and biometric login (Face ID / Passcode).

iOS + Android

Platforms

React NativeTypeScript2FABiometric AuthiOS+2

View case study

Tools

2022–2025

Testing & CI Pipeline Optimization

Employment Hero

Reworked the testing configuration and CI pipeline at Employment Hero. Reduced test execution time from 4–5 minutes, optimised CircleCI resource usage, and enhanced test reliability — helping the entire team ship faster.

4–5 min

Previous test time

JestCircleCIReact Testing LibraryTypeScriptGitHub Actions

View case study

Web

2021–2022

Healthcare Web Application

FPT Software

Built a healthcare management system at FPT Software with analytics, A/B testing, and SEO optimisation. Set up GA4 and GTM tracking, applied accessibility standards, and mentored a 4-member team.

4 devs

Team mentored

React.jsTypeScriptReduxGoogle OAuthGA4+2

View case study

Web

2020–2021

Car Insurance & Management Systems

Designveloper / Trixgo / Favie Tech

Developed full-stack web applications at early-career companies using React, Angular, Node.js, and Nest.js. Designed database schemas, integrated RESTful APIs, and automated deployments with AWS.

React + Angular

Frameworks

ReactAngularNode.jsNest.jsMongoDB+3

View case study

Capabilities

What I bring to the table.

Frontend Architecture & Performance

86%Bundle reduction

Large-scale React SPAs with advanced optimization — code splitting, lazy loading, tree-shaking. Proven 86% bundle size reduction in production.

ReactNext.jsTypeScriptViteZustandTanStack React Query

Design Systems & Complex UI

50+UI fixes shipped

Component libraries with Radix UI, node-based workflow editors, spreadsheet tools, waveform visualization, and video playback interfaces.

Tailwind CSSRadix UIReact FlowRemotionWaveSurferFigma

Forms, State & Data Fetching

14+Form types supported

Dynamic form systems with conditional logic, optimistic updates, real-time polling, and caching strategies for high-volume AI pipelines.

React Hook FormZodZustandReduxTanStack React Query

AI-Assisted Development

50%Faster onboarding

Engineering productivity through AI workflows — Claude Code CLI with custom skills, MCP integrations, automated code review, and CI/CD optimization.

Claude CodeCursorMCP ServersJestVitestCircleCI

Experience

5+ years across AI platforms, product teams, and startups.

Sep 2025 – Present

Current

Senior Frontend Engineer

GEN · US - Remote

AI-powered content creation platform for generating videos, images, and media assets at scale — featuring Vidsheets (spreadsheet-based batch video production) and AI agents.

ReactTypeScriptViteTailwind CSSZustandTanStack React QueryReact RouterReact Hook FormZodRemotionReact FlowRadix UI

View Details

June 2022 – Sep 2025

3+ years

Software Engineer

Employment Hero · Ho Chi Minh City, Vietnam

All-in-one HR solution for managing HR, payroll, performance, learning, recognition, and benefits. Led frontend architecture and technical planning for a 4-developer squad.

React.jsNext.jsReact NativeTypeScriptReduxReact QueryJestMixpanelGTM

View Details

Nov 2021 – Jun 2022

8 months

Software Developer

FPT Software · Vietnam

Healthcare web application. Implemented analytics, A/B testing, and SEO best practices. Set up GA4 and GTM tracking to monitor user behavior and support product insights.

React.jsTypeScriptReduxGoogle OAuthJestGA4GTM

View Details

Sep 2020 – Nov 2021

1 year 2 months

Software Developer

Designveloper / Trixgo / Favie Tech · Vietnam

Developed and maintained full-stack web applications including Car Insurance and Dentist Management Systems using React, Angular, Node.js, and Nest.js.

ReactNext.jsAngularNode.jsNest.jsMongoDBAWSTypeScript

View Details

About

Building clarity in a world full of complexity.

Open to opportunities

I'm Hoang Le — a Senior Frontend Engineer from Ho Chi Minh City, Vietnam, specializing in complex React applications, design systems, and AI-powered platforms. I transform complex systems into simple, intuitive experiences. I believe great software is built on clarity: clear thinking, clear structure, and a clear sense of purpose.

Over 5 years, I've worked across AI startups, product teams, and outsourcing companies. Currently at GEN building an AI media generation platform — from Vidsheets (spreadsheet-based batch video production) to workflow editors and Web3 auth. Previously at Employment Hero, I led frontend architecture for a 4-developer squad and drove a 50% reduction in onboarding setup time.

Years Experience

20+

Projects Shipped

Let's work together View Resume

Engineering Philosophy

Simplicity is the highest form of refinement.

A good system makes other people's work easier.

Great UI is invisible — it feels natural without explaining itself.

Impact matters more than complexity.

Every detail compounds — both the good and the messy ones.

Let's Build Something

I'm always excited to work on new projects, collaborate with talented teams, or just chat about the latest in web development and design.

Get in touch View Resume

Or connect with me directly