Dennis Duoc

Ho Chi Minh City, Vietnam

Dennis DuocSenior FE Developer & Tech Lead

I build web products for international brands — leading UI engineering for companies in the US and Europe, and shipping alongside teams across four continents.

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Illustrated portrait of Dennis Duoc
Years shipping frontend
19+
Brands delivered
11
Countries collaborated
8

Who I am

About

I am a Senior Frontend Developer and Tech Lead. My work sits where interface engineering meets delivery: building the front end, then making sure the team around it can ship reliably.

Most of my recent work has been at Huge Inc, leading UI engineering on projects for Elephant, Rakuten and ExxonMobil. Before that I spent years on e-commerce and CMS platforms, and four years at Legiti building an online notary product on top of qualified European authorities and blockchain protocols.

The parts of the craft I care most about are the ones users feel but rarely name: pixel-accurate implementation, accessibility, cross-browser behaviour, and performance that holds up on a mid-range phone.

Based in
Ho Chi Minh City, Vietnam
Languages
Vietnamese (Native), English (Fluent)
Worked with teams in
United States, Germany, France, Turkey, Colombia, Singapore, Canada, Australia
Status
Available for freelance and contract work

Selected work

Work

Brands and platforms I have delivered front-end engineering for, across agency and product teams.

Web applications

Internal platforms, teams of 10–15

  • HRM
  • CRM
  • AMS
  • ODA — Online Document Approval
  • ISO System
  • Planning Tool
  • FujiXerox

Mobile applications

Teams of 10–15

  • ProofStack
  • T2B — Talk to Banker
  • MyCoffee

Personal projects

Career timeline

Experience

19 years of front-end engineering, from agency delivery to leading UI at Huge.

  1. Senior UI Engineer / Tech Lead

    Huge Inc

    Huge is a design and technology company that builds products and experiences for some of the world's most ambitious brands.

    • Lead UI engineering across client projects, from implementation through delivery.
    • Work to enterprise standards for accessibility, cross-browser support and pixel accuracy.
    • Elephant
    • Rakuten
    • ExxonMobil
    • Huge Inc

  2. Senior FE Developer / Creative Team

    GBIT

    GBIT builds business websites, web applications, e-commerce platforms, CMS solutions and mobile applications.

    • Analysed requirements, clarified scope and produced detailed delivery schedules for project work.
    • Ran daily and weekly status reporting with clients throughout project execution.

  3. Senior FE Developer

    Legiti (CopyRobo)

    Legiti positions itself as the world's online notary, helping users obtain legally effective evidence.

    • Built interfaces for a product integrating qualified authorities in Germany, Estonia, Hungary and Turkey.
    • Worked across blockchain protocols including Bitcoin, Ethereum, Litecoin, EOS, NEO and Stellar.

  4. Senior FE Developer / Technical Manager

    15 Green Leaves

    Agency work delivering client projects across design, engineering and QA teams.

    • Worked with project managers to define project goals for agency clients.
    • Coordinated across Design, QC and IT/Admin to ensure delivery met client requirements.

  5. Front End Developer

    TT-Tech

    Front-end development combined with requirements analysis and project management.

    • Delivered front-end code alongside requirements analysis and project coordination.
    • My Coffee — café management software for mobile
    • Planning Tool — task and assignment management
    • Bach Viet Dictionary — German to Vietnamese

Certifications

  • Prompt Design in Vertex AI

    Google Cloud Skills Boost ·

  • Contentful Certified Professional

    Contentful ·

  • Project Management Skills for Leaders

    LinkedIn Learning ·

  • Digital Asset Management Bootcamp

    Cloudinary ·

  • HTML, CSS and JS for Web Developers

    Johns Hopkins University ·

Education

  • Information Technology

    University of Information Technology · 2003 — 2007

  • Graphic Design (Diploma)

    Polytechnic Vocational College Bach Khoa — Aptech · 2007 — 2009

  • Android Application Programmer

    NIIT — INET · 2012

What I bring

Skills

The stack I reach for, grouped by the kind of problem it solves.

Frontend core

  • ReactJS
  • Next.js
  • JavaScript
  • TypeScript
  • HTML5
  • CSS3

AI

  • Content generation
  • Text-to-speech
  • Text-to-image
  • AI video generation
  • Remotion
  • Vercel AI SDK
  • Prompt engineering

Styling & layout

  • Tailwind CSS
  • SASS / LESS
  • Bootstrap
  • Responsive layout
  • Pixel perfect

Motion & interaction

  • GSAP
  • ScrollTrigger
  • Lottie
  • Animation

CMS & content

  • Contentful
  • Sitecore
  • Magento
  • Shopify
  • DAM
  • Cloudinary

Data & backend

  • GraphQL
  • REST APIs
  • Yii Framework
  • Azure

Quality & accessibility

  • Accessibility
  • Lighthouse
  • BrowserStack
  • GA4
  • Cross-browser compatibility

Tooling & process

  • Git
  • Bitbucket
  • SVN
  • Jira
  • Grunt
  • Gulp

Design

  • Figma
  • Photoshop

Let's talk

Contact

Available for freelance engagements, contract roles and long-term collaboration. Tell me what you are building.

Available for freelance and contract work

Working from Ho Chi Minh City, Vietnam, comfortable across European and American time zones.

Hire me on Upwork(opens in a new tab)