Ruby on Rails/Python/AWS/MySQL/Redis/Elasticsearch/GraphQL • Spontaneously take ownership of the a/b testing microservice and revamp functionalities to support parallel user assignments, complex policy configurations, and more. Yield widespread benefits across all feature teams, leading to an 80% increase in product designer adoption and a 25% reduction in development time for experiment-related tasks. • Led the design and development of advanced search functionality for the teacher wall, enabling students to find required teachers among 100+ multilingual instructional topics without difficulty, which boosts search usability by 20% and conversion rate by up to 10%. • Architect and build an English-practicing voice chatbot, AI Tutor Bella, which utilizes OpenAI API and AWS cloud technologies, helping 10k+ students to enhance their English speaking skills anywhere and anytime with minimal resistance. • Devise and implement a sophisticated and lightweight asynchronous mechanism for AI content generation with OpenAI API. Leverage caching and queue workers to strategically enforce rate limits on OpenAI API calls and result in a P95 server response time consistently under 100 ms. • Unify multiple video transcoding scripts into a single, well-modulized repository by introducing a flexible DAG model, empowering developers to define transcoding workflows in business logic for swift application integration with Lambda function which reduces development time by 50%.

Python/Flask/SQL/Redis/Shapely/Solidworks • Developed and maintained an in-house distributed job scheduler used for various design tools for managing third-party proprietary licenses. 10+ tools across multiple functions in the company are running on the system stably and the number keeps increasing. • Implemented geometric algorithms for mechanical design automation and cascaded Solidworks APIs with remote Python auto-design services to build design flow for the next-generation in-house mechanical auto-design system, resulting in the automation of 15% of projects. • Built auto-dimensioning and data extraction modules for the in-house mechanical semi-auto design system, which saved 20% of designing time per case.

• Expatriated to TECO-Westinghouse in NA in 2017. Established regional engineering team for functions of motor quotation and technical service. • Facilitated cross-functional communication to accelerate a cross-region collaborative project with multiple teams between NA and Taiwan.