# Lunghao Lee > Frontend Software Engineer @ Tiktok Location: New York, New York, United States Profile: https://flows.cv/lunghao I am Lunghao, my friends call me Dragon, I used to fix aircraft, now I am a frontend dev in Tiktok ## Work Experience ### Frontend Software Engineer @ TikTok Jan 2024 – Present | New York City Metropolitan Area Main developers of Tiktok for Business’s general sso feature, design and developed the sso portal for KA customers(eg: Netflix, epic gaming.. etc) Redesigned the TikTok for Business onboarding flow, eliminating the root cause of 70% of account binding errors and driving 85% of users to successfully link their TikTok accounts with TT4B. Designed and launched the Agency Rewards Program, expanding support from 800+ to 2,000+ agencies. Drove opt-in rate growth from 12% to 25%, capturing 49% of total eligible revenue, and boosted new advertisers per agency by 84%, generating $31M in incremental revenue. Orchestrated the front-end rollout of TikTok For Business to 10 new countries by auditing the existing codebase, mapping end-to-end user flows, and resolving country-specific edge cases. Ensured seamless onboarding across diverse markets, enabling $266K in immediate revenue post-launch and projecting $4.4M annually. Led the security pillar of TikTok Business Center, engineering an account-takeover prevention mechanism and building the General SSO for TikTok For Business to strengthen authentication and safeguard advertiser accounts. ### React Frontend Developer @ Starbucks Jan 2023 – Jan 2023 | Seattle, Washington, United States Sr. React Developer | Starbucks Jan 2023 - Aug 2023 (React.js, TypeScript, GraphQL, Figma) Contracted via Antra for Starbucks MyDaily application • Collaborated within the MyDaily team at Starbucks to develop a communication application for store employees. • Implementing a series of features in message delivery, resulting in a 6% boost in store manager satisfaction. • Translated Figma designs provided by the design team into fully functional and visually appealing UI mock-ups. • Worked closely with the backend team for GraphQL APIs intergration, enabling efficient data retrieval and updates. • Implemented feature flags to facilitate controlled rollouts of new features, enabling A/B testing and promoting a data-driven approach to feature development. • Developed specialized views catering to district managers, providing them with valuable insights and tools to manage multiple store locations effectively. ### Frontend Web Developer @ CVS Health Jan 2022 – Jan 2022 | Denver, Colorado, United States Frontend developer for CVS account flow • Developed frontend applications for CVS account flow using Next.js. • Constructed essential features for CVS account flow, including Digital ID, Keep me signed in, and forgot password. • Enhanced and optimized the core frontend library for CVS internal usage •Collaborated with the accessibility team for accessibility defects, enhancing the user experience for all CVS customers. • Achieved an impressive 70% in Rx-tie rate for the CVS account flow, contributing to higher customer satisfaction. ### Full Stack Engineer @ Loopit Lifestyle Inc. Jan 2021 – Jan 2022 | Denver, Colorado, United States ● Bootstrapped a tech startup. ● Being selected by Create-X as part of the prestigious 2021 batch, ranking in the top 8% among over 1000 startups. ● Executed an early-stage marketing strategy that resulted in an outstanding 194% average weekly growth rate over a 3-month period. Discovered the first 350 early adopters and gained attention from Indie Hacker. ● Generated and seeded PostgreSQL with 10 million records and optimized queries to take < 2 ms ● Load-tested with K6 and horizontal scaled backend microservice to achieve > 1000 rps on AWS EC2 micro ● Deployed application using a microservice architecture with dockerized module ### Backend Developer | The Transplant API @ Software Engineering Applications Jan 2021 – Jan 2021 System design for a retail web app : Technologies: Express, JavaScript, PostgreSQL, K6, AWS EC2, Docker, Jest • Generated and seeded PostgreSQL with 10 million records and optimized queries to take < 2 ms • Load-tested with K6 and horizontal scaled backend microservice to achieve > 1000 rps on AWS EC2 micro • Deployed application using a microservice architecture with dockerized module ### Fullstack Engineer | MentorUP @ Software Engineering Applications Jan 2021 – Jan 2021 Designed and built an online-tutoring web app based on the client requirement with a team of 4 in a week: Technologies: React, React Router, React Hook, Express, JavaScript, MySQL, Passport JS, AdobeXD • Involved in the full project lifecycle - client negotiations, product concept, final feature design and implementation • Integrated API with MVC framework, implemented database search functionality with react-router for page redirection • Designed the initial site mockup using Adobe Xd; granting the team and client a cohesive vision of the final product ### Frontend Developer | Shredd.it Co @ Software Engineering Applications Jan 2021 – Jan 2021 Frontend design for an e-commerce web app : Technologies: React, React Router, React Hook, Express, JavaScript, TypeScript, Jest, Github Actions • Designed UI and UX for product overview component, providing a consistent user experience across products • Integrated API, created react context, and executed code review to maintain the cleanliness of the codebase • Implemented fully functional carousel slideshow, magnifier cursor zoom, drop-down menu, and CSS animation ### Graduate Student @ University at Buffalo Jan 2018 – Jan 2021 | Buffalo/Niagara, New York Area ### Grader @ University at Buffalo Jan 2019 – Jan 2020 | Buffalo/Niagara, New York Area ### Summer Intern @ Evergreen Aviation Technologies Corp Jan 2015 – Jan 2015 | Taoyuan County, Taiwan Summer Intern in power plant maintenance department • Diagnosed engine’s overall usage status, determined maintenance process. • Issued work order, ensured maintenance process was completed. ## Education ### Master of Science - MS in Machanical Engineering University at Buffalo Jan 2018 – Jan 2020 ### Bachelor's degree in Mechanical Engineering National Taipei University of Technology Jan 2013 – Jan 2017 ## Contact & Social - LinkedIn: https://linkedin.com/in/lunghaol --- Source: https://flows.cv/lunghao JSON Resume: https://flows.cv/lunghao/resume.json Last updated: 2026-03-23