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Looking for full-time or part-time remote collaboration opportunities. I specialize in web, mobile app, and game development, design consulting, and technical support. With extensive AI Coding experience, I can quickly build complex applications. If you have any interesting ideas or projects, I'm also open to partnering up. Feel free to reach out to discuss further. Thanks! View Resume

Resume

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Yu Donghan / 于东晗

Senior Software Engineer | Front-end Development Specialist

Contact Information

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; launched the HowManyTimes app on the Apple Store; published Unity assets on the Unity Asset Store.
  • Independent Game Projects: Developed an independent game using pixi.js 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 videos/insights on Chinese media platforms, including a video with 100,000+ views and over 10,000 followers across channels.
  • Online Novels: Continuously published original works 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)