# Leo Wanxiang Cai

> Software Engineer @ Yahoo

Location: Greater Seattle Area, United States
Profile: https://flows.cv/leowanxiangcai

• A passionate, innovative, and dedicated software engineer with experience in designing and developing high-performance, scalable, secure, and maintainable distributed systems
• Skilled at cloud development technologies with expertise in AWS/GCP, proficient in software development lifecycle management, and well recognized for strong problem-solving and accountability

## Work Experience
### Senior Software Development Engineer @ Yahoo
Jan 2023 – Present | Seattle, Washington, United States

### Software Engineer III @ Wyze
Jan 2022 – Jan 2023 | Greater Seattle Area
• Designed, developed, and managed Wyze Membership Service, which supports more than 1 million active subscriptions and less than 2 million IoT devices and processes more than 2000 TPS with 99.9% availability
• Led and delivered the core subscription purchase project by designing and developing Wyze Bundle
Management Service and In-app Purchase Service from scratch, which has greatly enhanced the subscription purchase experience and increased subscription sale revenue by 30%
• Architected and built an Anomaly Event Notification Service, which detects and handles more than 1000
anomaly events per minute, and sends notification emails to users through integration with Braze
• Monitored, maintained, and optimized high-traffic cloud services with high reliability and stability; Integrated service logs with AWS Elasticsearch to perform interactive log analytics; Built automated API testing and monitoring by Runscope; Implemented CI/CD pipeline for services using Jenkins, Terraform, and AWS CLI
• Provided professional guidance to junior engineers; Resolved ambiguities from product requirements and converted the technical solutions to executable tasks in a fast-paced environment

### Software Engineer II @ Wyze
Jan 2021 – Jan 2022 | Greater Seattle Area

### Software Engineer @ Wyze
Jan 2019 – Jan 2021 | Greater Seattle Area
Cloud Service Development

### Software Engineer - Capstone @ University of Washington Information School
Jan 2018 – Jan 2019 | Greater Seattle Area
• Designed and developed an iOS application for traveling by coding in JavaScript with React Native
• Architected and built a serverless RESTful backend on Google Cloud Serverless Computing using Golang, Docker, and Firebase
• Conducted user research and usability testing to improve user experience by iteratively revising the design

### Data Analytics Engineer Intern @ Adobe
Jan 2018 – Jan 2018 | San Francisco Bay Area
• Designed and developed automated data analytics solutions for Adobe Experience Cloud
• Utilized Python, Docker, Jenkins and Power Bi to automatically generate monthly data quality report which tracked a list of key metrics impacting data quality, identified insights, and provided recommended solutions for further improving
• Built a set of machine learning models (XGBoost, Random Forest and Support Vector Classifications) with imbalanced data to predict customer churn, and achieved the highest AUC score of 0.76

### Research Assistant – Software Development @ The Taskar Center for Accessible Technology
Jan 2017 – Jan 2018 | Greater Seattle Area
• Developed stylized pop-up tutorial for the front-end by JavaScript to introduce new users the AccessMap app and its features; fashioned a discrete link to more in-depth documents
• Collected crime, transportation, and green spaces data from Seattle Open Data portal, manipulated the raw data, and loaded it into a MySQL database
• Implemented a scoring method to classify sidewalks in Seattle based on accessibility, crime, transportation, and green spaces information

### Product Manager Intern @ LeEco
Jan 2016 – Jan 2016 | Beijing City, China
• Developed the VR mobile application’s functions and features through analyzing product needs and business requirements; Participated in design reviews and provided objective feedback
• Tested functions, scalability, and performance of the VR mobile application on both Android and IOS platforms, wrote bug reports, and collaborated with the development team to solve the problems
• Conducted a total of 31 user tests through observation techniques, task analysis, and other feedback methodologies to understand user behavior and improve the usability of the VR mobile application
• Evaluated market needs, built product strategy and roadmap, and established time frames

### Data Engineer Intern @ Infervision
Jan 2015 – Jan 2015 | Shenzhen, Guangdong, China
• Spearheaded data collection and user research from local clinics and hospitals; Assisted in analyzing data to identify key features affecting clients’ willingness to use the intelligent diagnostic system, building predictive models, and realizing data visualization by using Tableau
• developed company’s website by using HTML, CSS and Bootstrap framework
• Worked directly with CEO to build partnerships and increased the number of hospital clients by 30%


## Education
### Bachelor of Science - BS in Informatics
University of Washington
Jan 2014 – Jan 2019


## Contact & Social
- LinkedIn: https://linkedin.com/in/leo-wanxiang-cai-161220114

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Source: https://flows.cv/leowanxiangcai
JSON Resume: https://flows.cv/leowanxiangcai/resume.json
Last updated: 2026-03-22