# Cory(Hongrui) Kuang > Software Engineer at Rotender | Frontend/Full-Stack Development | Self-Starter & Product-Driven Location: Los Angeles Metropolitan Area, United States Profile: https://flows.cv/coryhongrui I am a Senior Front-End Engineer with over 6 years of experience building scalable, high-performance web and mobile applications. Having worked in both large enterprises and fast-paced startups, I adapt quickly to diverse environments and deliver results efficiently. I specialize in TypeScript, React, and Next.js, with a strong focus on user experience, performance, and cross-team collaboration. ## Work Experience ### Senior Software Engineer @ Rotender Jan 2021 – Jan 2025 | Los Angeles, CA • Built and piloted a kiosk‑based Android drink‑ordering app using React Native/Typescript with integrated hardware control, leveraging a self-developed plugin architecture to go from 0→1 in 4 weeks. The app has been used by thousands of people across the country to order beverages at some of the largest venues in the country, including Globe Life Field (The Texas Ranger’s Stadium), T Mobile Park (The Seattle Mariners’ Stadium), The House of Blues, and Mandalay Bay, among others. The kiosk is capable of processing 200+ orders/hour, delivered each drink from order to pick‑up in < 1 minute, and generating $15,000+ in 3 hours. Implemented over 20 feature flags to create custom client experiences based on location, and integrated with POS systems such as Stripe and Shift4. • Built Rotender's custom face‑ID matching system in Python using the Ray AI framework and ensemble prediction across multiple models from DeepFace, achieving 97%+ matching accuracy and reducing recognition time from ~60s to under 15s, compared to most face matching SaaS. • Built Rotender's client dashboard as a single-page application using Next.js, TypeScript, React, Redux, and Material-UI, which increased user engagement by 25% and reduced page load time by 40% through code-splitting and lazy loading • Designed and implemented a Node.js/Express back end with JWT authentication and a MongoDB database, following RESTful API principles. • Performed code reviews for junior team members. •Worked with various AWS services, such as EC2, S3, Cloudwatch. Set up sophisticated logging and alerting for telemetry from embedded system. Managed deployments on Github Action. ### Staff Software Engineer, DiDi Global @ DiDi Jan 2017 – Jan 2020 | Beijing, China • Optimized the front‑end user‑behavior data‑collection library by architecting and developing a TypeScript‑based plugin system, reducing load time from 30s to ~2s, enabling new feature roll‑outs in as fast as 1 day while maintaining code quality, and rolling it out across 100+ business project lines company‑wide with cross-functional collaboration. • Led a team to modernize the front‑end tech stack of 12 internal monitoring systems using TypeScript, React, Redux, and Ant Design, achieving an average 30% improvement in operational efficiency and 50% faster load times. • Built a global COVID‑19 news feed CMS(went from 0→1 in 10 days) with TypeScript, React, Redux, and Ant Design (front end) and NestJS with MySQL RDS (back end) to generate static HTML pages stored in S3 for high concurrency support. It rolled out ahead of Uber's release, achieving 150,000+ daily page views post‑launch. ### Front End Lead @ 高途Gaotu (NYSE: GOTU) Jan 2015 – Jan 2017 | Beijing, China • Collaborated with product managers to build the front end of a referral-based course sales system using TypeScript, React, Redux, and Ant Design, which generated over $10 million in revenue in its launch year. ### Senior Software Engineer @ Baidu, Inc. Jan 2014 – Jan 2015 | Beijing, China • Built the front end of a new advertising platform using an in-house UI component library and custom build framework, reducing load and response time from over 3 minutes to under 1 minute, which directly contributed to winning a major search engine competition. ### Software Engineer @ IBM Jan 2011 – Jan 2014 | Beijing, China • Built the Bank of China’s web system using Dojo(IBM in-house UI and bundling framework), resulting in an 80% improvement in load efficiency and achieving 97% user satisfaction after launch. • Built front-end automated testing for the IBM RDS system using Java and Selenium, which reduced the front-end bug rate from 2% to 0.5%. ## Education ### Master's degree in Big Data Science and Engineering Beihang University Jan 2014 – Jan 2020 ### Bachelor of Technology - BTech in Computer Science Wuhan Textile University Jan 2005 – Jan 2009 ## Contact & Social - LinkedIn: https://linkedin.com/in/coryisbest - GitHub: https://github.com/coryisbest0728 --- Source: https://flows.cv/coryhongrui JSON Resume: https://flows.cv/coryhongrui/resume.json Last updated: 2026-03-22