Andy SUN
Sydney,Australia
Summary
Highly accomplished Senior Fullstack Developer with 7+ years of experience architecting and delivering enterprise-grade web applications across fintech, e-commerce, and sustainability sectors. Expertise in modern JavaScript/TypeScript ecosystems with proven success in leading technical initiatives. Demonstrated ability to mentor teams, establish best practices, and deliver scalable solutions using React, Next.js, Node.js, and AWS infrastructure. Passionate about creating accessible, performant applications that deliver measurable business impact.
Overview
9
9
years of professional experience
Work History
Senior Fullstack Developer
Clima
08.2022 - Current
- Led comprehensive frontend architecture redesign for flagship SaaS platform, achieving 65% improvement in page load times and 40% reduction in bundle size through strategic code splitting, lazy loading, and tree shaking optimizations
- Spearheaded enterprise-wide migration from JavaScript to TypeScript across 50+ components and shared libraries, resulting in 35% reduction in runtime errors and significantly improved developer productivity
- Architected and implemented scalable micro-frontend architecture enabling independent deployment of multiple product lines while maintaining consistent user experience
- Established comprehensive testing strategy achieving 85% code coverage using Jest and React Testing Library, reducing production bugs by 60% and improving deployment confidence
- Collaborated with UX designers to build accessible, compliant component library used across 5+ products, reducing new feature development time by 45%
Front-End Developer
FpvFaster
06.2018 - 08.2022
- Developed and maintained high-performance responsive web applications for fintech and e-commerce clients, serving 100K+ monthly active users
- Achieved consistent Lighthouse scores of 95+ across all metrics through systematic performance optimization using Chrome DevTools, lazy loading, and asset optimization techniques
- Built comprehensive reusable component library with Storybook documentation, reducing new feature development time by 30% and improving code consistency across projects
- Implemented sophisticated state management solutions using Redux Toolkit and Context API for complex data flows, managing applications with 50+ interconnected components
- Established end-to-end testing framework using Cypress achieving 80% code coverage, significantly reducing regression bugs in production
- Collaborated with backend teams to design and consume RESTful APIs and GraphQL endpoints, ensuring optimal data fetching patterns and error handling
Junior Fullstack Developer
Winning Investment
01.2017 - 04.2018
- Built full-stack responsive web applications using React, Redux, Webpack, Node.js, Express, and MySQL for financial services platform
- Developed secure RESTful APIs with comprehensive error handling, input validation, and industry-standard security measures
- Implemented robust user authentication systems and role-based access control (RBAC) ensuring secure access to sensitive financial data
- Participated actively in Agile ceremonies (sprint planning, stand-ups, retrospectives) and collaborated effectively with cross-functional teams including designers and product managers
- Maintained and refactored legacy codebases while introducing modern development practices, improving code maintainability and reducing technical debt
Education
Master of Telecommunications Engineering -
University of New South Wales (UNSW)
Sydney, NSW, Australia01.2016
Bachelor of Telecommunications Engineering - undefined
Soochow University
China01.2013
Skills
- Frontend Development: React, Preact, Nextjs (SSR/SSG), TypeScript, JavaScript (ES6), HTML5, CSS3, Material-UI, Redux Toolkit, React Query, SWR, Responsive Design
- Backend Development: Nodejs, Expressjs, REST APIs, GraphQL, Apollo Client, Mongoose
- Database & Caching: MongoDB, MySQL, Redis, Query Performance Tuning
- Cloud & DevOps: AWS (EC2, S3, CloudFront, Cognito, CodeArtifact, CodeBuild, CodeDeploy, CodePipeline), Docker, GitHub Actions, CI/CD Pipelines, Infrastructure as Code
- Testing & Quality: Jest, React Testing Library, Cypress, ESLint, Prettier, Test-Driven Development (TDD), 85% Code Coverage Achievement
- Security & Auth: JWT, AWS Amplify, AWS Cognito, Helmetjs, CORS, Rate Limiting
- Tools & Methodologies: Git, GitHub, Bitbucket, Jira, Trello, Code Review, Mentoring, Technical Documentation
Timeline
Senior Fullstack Developer
Clima
08.2022 - Current
Front-End Developer
FpvFaster
06.2018 - 08.2022
Junior Fullstack Developer
Winning Investment
01.2017 - 04.2018
Bachelor of Telecommunications Engineering - undefined
Soochow University
Master of Telecommunications Engineering -
University of New South Wales (UNSW)