Peng Wei Email & Phone Number

San Francisco, Ca, Us

Sunnyvale, Ca, Us

- Co-founded LeaseCo, which is an online point-of-sale financing solution that allows customers to pay over time on a flexible schedule- Created the entire stack, from application to devops to analytics to marketing- Went to market in 4 months and grew revenue to 7 figures in under a year- Created roadmaps every quarter and made key tech and data driven business decisions- Drove agile meetings; managed JIRA board; mentored other devs Technical highlights- Built multiple web frontends with React- Built backend with Node that exposed a RESTful API, with JWT auth and many 3rd party integrations- Built a mobile app with React Native and Firebase that allowed for offline transactions- Wrote CloudFormation templates to manage AWS resources as code- Built a CI/CD pipeline that handled running unit tests, DB migrations, deploying application containers to ECS, webpacking, and deploying frontend artifacts to S3- Wrote SQL queries to determine various metrics such as conversion rate, charge off rate; connected GDS to internal and external data sources and added visualizations for business team- Set up Sentry and PagerDuty and established on call process

San Francisco, California, Us

- Joined during a transitional period to add an in-house financing solution- A few months later, company was sold, and the financing solution was extracted as a standalone product as LeaseCo

Boston, Ma, Us

- Joined as the first employee and built the entire tech stack from scratch in 6 months to qualify for and successfully graduate from Y Combinator- Continued to make critical contributions to both technology and process which allowed TetraScience to grow to 20+ employees- Wrote a RESTful API for managing resources such as users and devices- Designed and implemented a distributed data pipeline that parsed data from many scientific instruments and provided real time monitoring and alerting to users - Led the development of TetraScience Link: a custom single board computer that collected data from instruments and sent data to the server- Implemented a visibility solution for TetraScience Links using Grafana and InfluxDB- Managed server deployments on AWS and used Vagrant to build a common local environment- Mentored and managed other engineers; conducted biweekly 1-on-1s and regular code reviews- Provided training on topics such as objected oriented programming, event driven programing- Defined interview process and conducted most of the technical interviews

- Worked on 3 #1 games in the U.S. store: Tiny Village, Spellstorm, Family Guy: The Quest for Stuff- Implemented and improved core features such as goals, achievements, dialogs, in app purchase, push notification, user tracking, Facebook integration, tooltips, shop, inventory, building placement- Optimized CPU and memory usage and improved game performance tremendously- Gained thorough understanding of game development concepts such as configuration loading, image compression, MVC pattern, core loop, A/B testing- Wrote code in C++ 11 utilizing modern features such as lambda expression, type inference