# Mark C.

> Senior Frontend Software Engineer | Senior Frontend Engineer | Software Engineer | JavaScript, TypeScript, React, Vue, Python, HTML, CSS

Location: Los Angeles Metropolitan Area, United States
Profile: https://flows.cv/markc

I am an experienced senior frontend software engineer skilled in building responsive and scalable apps for both mobile and web platforms, using various web scripting technologies. With expertise in multiple programming languages, web standards, and project development, I can effectively communicate technical information to diverse audiences.

Exceptionally thorough and meticulous, with outstanding collaborative and interpersonal skills. I am equally comfortable working independently or as part of a team in a fast-paced environment.

Frontend: Javascript, Typescript, React, Redux, Redux Toolkit, Next.js, Vue, Vuex, Vuetify, HTML5, CSS3, SASS, Less, Tailwind CSS
Backend: Node.js, Express, RESTful API, GraphQL, PostgreSQL, MongoDB
Testing/Deployment:  Jest, Cypress
Developer Tools: Git, Webpack, Postman, Agile

## Work Experience
### Senior Frontend Software Engineer @ UnDigital
Jan 2024 – Jan 2025 | Hunt Valley, MD
• Refactored the main application to use asynchronous architecture, resulting in a 67% reduction in initial load time
• Decoupled a legacy table library from the main and admin applications, restoring CI workflows, adding caching layers, and enhancing overall performance by more than 80%
• Consolidated multiple state management systems into Redux Toolkit, reducing unnecessary renders by ~30% and significantly improving code consistency, scalability, and maintainability
• Collaborated with UI/UX designer to modernize the client marketing performance table, resulting in a more intuitive and visually consistent interface
• Integrated caching and debouncing across all search and pagination features in the admin application, reducing unnecessary API calls by up to 90%.
• Developed a multi-page design feature for the Canvas application, enabling users to design and edit multiple marketing materials within a single project
• Developed and integrated multiple design tools within the Canvas application, expanding user capabilities for crafting a wide range of marketing assets
• Mitigated security risks by updating and replacing dependencies identified in Snyk vulnerability scans

### Frontend Software Engineer @ Nexon America
Jan 2021 – Jan 2023 | El Segundo, California, United States
Team:  Business Intelligence and Digital Platform
• Developed and integrated a live streaming service using React.js, TypeScript, MobX, and Redux across Nexon’s desktop app and marketing websites, increasing traffic by 52% and user retention by 36%.
• Developed a unified internal tool platform and consolidated six existing services into a single Vue.js, Vuex, and Vuetify framework, streamlining the deployment process from six steps to one
• Integrated social login functionality into the account login page to enhance the user experience
• Implemented a trusted device management feature that effectively reduces login steps.
• Collaborated with cross-functional teams and third-party vendors to integrate new payment gateways into the purchasing flow
• Collaborated with the data analyst to implement Google tags for tracking user interactions across all Nexon front-facing websites
• Conducted A/B testing to determine the final version of front-facing websites, which resulted in a 20% increase in traffic

### Associate Software Engineer @ Nexon America
Jan 2018 – Jan 2021 | El Segundo, California, United States
Team: Global Platform
• 2019 Unsung Hero award recipient for improving the launcher project’s build process into one step
• Revamped the Nexon Game Card website and introduced features that enable users to conveniently check balances and combine game cards
• Integrated new features into Umbraco (CMS) using C# and deployed the content to AWS S3
• Integrated Umbraco (CMS) into the front-facing websites, which empowered the content team to manage and update content and localizations efficiently
• Performed E2E and cross-platform browser testing to ensure smooth and expected functionality

### Frontend Developer @ AuditBoard
Jan 2018 – Jan 2018 | Greater Los Angeles Area
•  Created user-friendly website experiences aligned with the provided wireframe
•  Developed a custom video player component to autoplay on mute when within the viewport
•  Performed cross-platform browser testing to ensure smooth and expected functionality


## Education
### Bachelor of Arts - BA in Business Economic
UC Irvine
Jan 2009 – Jan 2011


## Contact & Social
- LinkedIn: https://linkedin.com/in/yuchihchen

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Source: https://flows.cv/markc
JSON Resume: https://flows.cv/markc/resume.json
Last updated: 2026-03-22