# Yu Donghan / 于东晗  
**Senior Software Engineer | Front-end Development Specialist**

## Contact Information
- **Email:** yu_dong_han@hotmail.com
- **Phone:** +86 15921032835
- **LinkedIn:** [linkedin.com/in/yudonghan/](https://www.linkedin.com/in/yudonghan/)
- **GitHub:** [github.com/fishenal](https://github.com/fishenal)
- **Website:** [fishenal.dev/about](https://www.fishenal.dev/about)

## Summary
- 13+ years of experience in web development, specializing in React, Next.js, and Tailwind CSS.
- Extensive knowledge of web architecture and network workflows, with hands-on experience in front-end and back-end development for 10+ projects.
- Strong ability to understand business requirements, propose solutions, and deliver high-quality results efficiently.
- Passionate about writing, art, and staying updated on industry trends.

## Skills
- **Programming Languages**: JavaScript, TypeScript, CSS, Node.js
- **Frameworks**: React, Next.js, Tailwind CSS, MUI, Ant Design, Nest.js, MongoDB, React Native, Flutter
- **Tools**: VS Code, Webpack, Babel, ESLint, Git
- **Language**: Native Chinese speaker. Excellent proficiency in reading and writing English, with communicative listening and speaking skills.

## Experience
### Front-end Development Assignment at PayPal - Beyondsoft  
**August 2024 – June 2025 (10 months)**  
- Developed PayPal's internal data products using React, ECharts, Next.js, Ant Design, Tailwind CSS, and AI tools like Copilot.

### Front-end Development Engineer - Shanghai Youqu Information Technology  
**October 2023 – March 2024 (6 months)**  
- Maintained Web3 projects and contributed to the rapid development and launch of a new mobile project.

### Senior Software Engineer - Unity Technologies  
**January 2021 – May 2023 (2 years, 5 months)**  
- Led the redesign of Unity Asset Store (Go + React), improving user experience and supporting major sales campaigns.  
- Built the web platform for Metacity Metaverse (React + NestJS), integrating Unity projects via WebGL for seamless communication.  
- Contributed to early architecture design and technology selection for Uniasset Digital Asset Management Platform.  
- Conducted campus recruitment interviews for the company.

### Senior Software Engineer - GE Healthcare  
**March 2019 – January 2021 (1 year, 11 months)**  
- Developed front-end modules for the Radiology Information System (RIS) using React + Ant Design Pro, resolving HTML-to-PDF conversion challenges.  
- Optimized legacy systems through framework upgrades and business logic refactoring.  
- Established front-end coding standards and team workflows, and conducted technical interviews.

### Front-end Designer - China Merchants Bank Credit Card Center  
**April 2017 – March 2019 (2 years)**  
- Created marketing pages for new channels (WeChat/Alipay) and developed HTML5 mini-games.  
- Collaborated with designers as a technical consultant, contributing to UI/UX discussions and conducting technical workshops.

### R&D Engineer (T4) - Baidu  
**April 2014 – March 2017 (2 years, 11 months)**  
- Developed B2B analytics products in the Big Data division, including Baidu Sinan and Data Marketplace.  
- Enhanced newsfeed ad systems across Baidu's ecosystem (Baidu APP, Tieba Forum, Zhidao Q&A).

### Front-end Development Engineer - Giant Network  
**October 2013 – April 2014 (7 months)**  
- Updated game recharge modules and developed event pages for the gaming platform department.

### Front-end Development Engineer - ETU Design  
**February 2013 – October 2013 (9 months)**  
- Developed web front-end solutions for client projects, including collaborations with L'Oréal.

### Front-end Development Engineer - NeoTV  
**November 2012 – February 2013 (4 months)**  
- Created official websites for licensed browser games and maintained community forums for esports live streaming.

### Front-end Development Engineer - XD Games  
**March 2011 – September 2012 (1 year, 7 months)**  
- Developed and maintained official websites, community forums, and user backend systems for self-developed browser games.

## Education
### Master of Art Design - East China University of Science and Technology  
**October 2008 – March 2011 (2 years, 6 months)**  
- Specialized in industrial design, focusing on design theory, market analysis, and practical projects.  
- Participated in decorative design and telescope product design projects, and competed in design competitions.

### Bachelor of Industrial Design - Shenyang Ligong University  
**August 2004 – August 2008 (4 years)**  
- Studied design fundamentals, 3D software, and furniture design techniques.

## Projects
### Independent Studio  
- Developed [fpl-charts](https://fpl-charts.com/), a charting website for analyzing Fantasy Premier League (FPL) games.  
- Created and launched the "HowManyTimes" app on the Apple Store.  
- Used AI and collaborated with designers to create Unity assets, published on the Unity Asset Store.

### Independent Game Projects  
- Developed an independent game using pixi.js, published on itch.io.  
- Created mods for *Crusader Kings III (CK3)*.

### Online Courses  
- Recorded front-end development courses for a major education platform, with nearly 1,000 learners.

### Social Media & Content Creation  
- Produced and shared videos/insights on multiple Chinese media platforms, including a video with 100,000+ views and over 10,000 followers across all channels.

### Online Novels  
- Continuously published original works and opinions on multiple Chinese platforms, totaling hundreds of thousands of words.

## Certifications  
- Programmer Certificate, MIIT & MOHRSS (2021)  
- Coursera Certifications:  
  - Algorithms on Graphs (2020)  
  - Algorithms on Strings (2020)  
  - Algorithmic Toolbox (2020)  
  - Data Structures (2020)