Javi Javier

WaniKani - Japanese Learning Platform (500k+ users)

• •Mastered complex legacy codebase built on Rails and deployed on Heroku with minimal documentation through peer discussions and systematic exploration
• •Worked closely with CTO to plan and execute migration from legacy stack to modern React/TypeScript architecture
• •Progressively expanded role from front-end to full-stack Rails and React development, developing:
• ◦cross-browser compatible Japanese audio player in React
• ◦advanced quiz answer checking and extensible hint system in JavaScript
• ◦updated Stripe subscription flows with React forms
• •Diagnosed and fixed production issues through database debugging and Rails, Redis and PostgreSQL

Tofugu.com - Learning Blog

• •Supported and maintained Middleman blog deployed on Netlify
• •Built Airtable to Markdown publishing tool that reduced content team's workflow
• •Built new Japanese Grammar section which achieved #1 Google ranking for Japanese grammar
• •Mentored a junior developer to implement new features and take over maintaining the codebase

Engineering Lead (Sept - Nov 2017)

• •Led successful 3-month redesign of bonappetit.com, coordinating across engineering, design, and editorial teams
• •Improved key metrics while maintaining feature parity (PageSpeed 32 → 93, SpeedIndex 16,000 → 2,792)

Senior Software Engineer

• •Progressed from WordPress developer to React/Node.js engineer through self-directed learning on the job
• •Mastered complex Webpack configurations to optimize build performance
• •Rapidly launched two new Bon Appétit subbrands, Healthyish and Basically through customizing internal React component library and Node.js API
• •Built and maintained shared React components for a company-wide design system used across major publications (Vogue, GQ, Pitchfork)