Resume

Senior Software Engineer with 5+ years of experience specializing in front-end development. Passionate about building performant, accessible web applications with React, Next.js, and TypeScript. Focused on design patterns, best practices, and understanding how things work under the hood. Strong in AI knowledge with hands-on experience applying AI tools to accelerate development workflows. Technical writer at blog.tuanhadev.tech. Download my full CV for complete details.

Experience

NashTech - Senior Software Engineer

- Present

NashTech is a global technology services provider specializing in software engineering, cloud solutions, and digital transformation. Working across multiple client projects, delivering scalable enterprise applications using modern web technologies.
  • Promoted from Software Engineer to Senior Software Engineer (Sub-level 2) over 4+ years through 2 career advancements.
  • Primary contributor to Dulux Consumer Website, a large-scale ecommerce platform serving Australia and New Zealand markets (see Featured Projects for details).
  • Set up AI development guidelines with GitHub Copilot for the team (AGENTS.md, instructions, skills, project docs) and boosted unit test coverage from 72% to 81% in 2 weeks.
  • Led major framework upgrade from React.js 17 & Next.js 12 to React 18 & Next.13, leveraging AI assistance to reduce migration effort and ensure a smooth transition.
  • Fully in charge of migrating from Next.js Pages Router to App Router by upgrading to Next.js 14, leveraging AI to complete 90% of the migration in 3 weeks and helping reduce content publish-to-live time from 30 minutes to seconds.
  • Worked with cross-functional teams in remote and hybrid environments, following Agile/Scrum practices and regularly presented completed features to clients.

BLAMEO Technology - Javascript Developer

-

Part-time position at a fast-paced startup, working on multiple outsourced projects. Focused on building reusable UI components and gaining full-stack development experience.
  • Developed front-end solutions for multiple client projects using React.js and AngularJS with state management tools including MobX, Redux, and Context API.
  • Contributed to backend development using Node.js, Express.js, and NestJS, supporting projects end-to-end as a full-stack developer.
  • Gained hands-on experience across the full development lifecycle in a startup environment, from requirements gathering to deployment.

Skills

Core Technologies

Next.jsReactCSS3HTML5JavaScriptTypeScript

Architecture

Best PracticesClean CodeComponent DesignState ManagementAtomic DesignDesign PatternsSoftware Engineering Principles

Performance

Core Web VitalsLazy LoadingMemoization TechniquesRendering PatternsSEOWeb PerformanceAsset OptimizationBundle Size OptimizationDOM Size Optimization

AI & Productivity

Agent SkillsAI-Assisted DevelopmentGitHub CopilotPrompt EngineeringAI Code ReviewLLM IntegrationMCPRetrieval-Augmented Generation (RAG)

Frameworks & Libraries

ContentfulFlickityAngular.jsFormikGoogle Maps Reactmoment.jsReact-PDFYup

Styling

CSS ModulesFigmaResponsive DesignTailwind CSS

Dev Tools

ESLintGitnpm/yarnPrettierWebpack

Testing

JestReact Testing Library

Backend

GraphQLNode.jsREST APIExpress.js

Debugging

Chrome DevTools DebuggingConsole DebuggingNetwork DebuggingPerformance DebuggingReact DevTools DebuggingVS Code DebuggingMemory Leak Detection

Security

AuditAuthentication/AuthorizationCORSHTTPS/SSLInjection AttackThird-Party Component RisksWeb SecurityXSS/CSRF Protection

Accessibility

Keyboard InteractionARIAColor ContrastKeyboard NavigationSemantic HTMLTab IndexWCAG

Deployment

AzureCI/CDDockerVercel

Featured Projects

Dulux Consumer Website

Dulux Consumer Ecommerce Platform

A large-scale ecommerce platform for Dulux paint products across Australia and New Zealand markets. The platform serves retail customers planning paint projects and commercial buyers, offering product discovery, purchasing, and project guidance.

  • Dedicated 4+ years as primary front-end engineer on enterprise-level ecommerce platform serving retail and commercial customers across Australia and New Zealand
  • Consistently assigned to handle the most complex technical tickets in main releases, including critical bug fixes and high-priority feature development, delivering them on time
  • Collaborated with 20+ team members including onshore Dulux teams, product managers, designers, and QA engineers in Agile/Scrum environment
  • Designed and implemented custom Azure AD B2C authentication UI for three critical screens (Sign-in, Sign-up, Forgot Password), delivering them on schedule with minimal production issues
  • Implemented GraphQL API integrations alongside front-end development work
  • Led code reviews and refactored legacy codebase to improve maintainability, reducing technical debt and improving team development velocity
  • Optimized website performance through code splitting, lazy loading, image optimization, and caching strategies, improving Core Web Vitals scores and achieving 40% faster page load times
  • Drove SEO improvements including meta tags optimization, structured data implementation, and page speed enhancements that increased organic traffic by 25% and improved search visibility
ReactNext.jsTypeScriptTailwind CSSGraphQLContentfulAzure AD B2C

Yumanavi

Educational Content Discovery Platform

An educational platform connecting high school students with university professors through 30-minute video lectures. The service helps students discover their interests and explore connections between academic subjects and the real world.

  • Created detailed technical designs for assigned features
  • Developed front-end components based on functional requirements and design specifications
  • Performed unit testing to ensure code quality and reliability
  • Resolved incidents and fixed bugs to maintain platform stability
React.jsReduxTypeScriptSwaggerPostman

Education

Certifications