Implemented green-field web and mobile experience to help millions track their income and better understand their taxes

Maintained multiple frontend React apps and TS/JS libraries for infrastructure and product changes

Maintenance included: improving accessibility/a11y quality of CK web experiences, improving local dev UX, add unit tests for infrastructure and product code, A/B test Apollo vs. URQL for performance and bundle size

Tech: ReactJS, GraphQL/Apollo/URQL, TypeScript, design system UI component library, front-end unit testing, microservices (Thrift RPC), YAML, Scala

Delivered ASAP several iterations of a new storytelling-focused social network

Built out writing tools and game-like experiences that encouraged good storytelling and cross-user engagement

Mentored junior engineer (also contractor)

Tech: ReactJS, GraphQL/Apollo, XState, JS, Styled-Components, AWS Amplify, AWS AppSync, AWS Cognito, AWS DynamoDB, AWS Lambda

Built and maintained a customer- and bizops-facing portal for SEO business operations

Integrated third-party APIs like Stripe for payments and bank transfers

Tech: Laravel, PHP, ReactJS, Redux, JS, SASS, MySQL

Built a comprehensive testing framework for quickly testing the new tables based on the shared UI infrastructure

Modified both internal and customer-facing backend APIs in Python

Continuously maintained and improved code quality by sustaining 95% test coverage, ensuring good static types, and adapting developer tools to the team's needs

Maintained shared UI component library for reuse across several products

Mentored other engineers on current architecture and potential approaches to a feature or fix

Mentored engineers in best practices for typed JS using Flow

Built and modified custom directives to fit product needs

Worked closely with UX designer to build and launch the second generation of main product

Collaborated with DevOps team to ensure deployment to multiple environments

Maintained legacy Ruby on Rails application during migration