I was hired as the first engineer in the new NYC HQ for Vroom (over $1b in revenue) as a Senior Software Engineer and promoted to Engineering Lead after 10 months, managing a team of 5 engineers.
I rewrote Vroom.com from the ground-up as a universal/isomorphic Javascript single-page app with Node.js, React, Redux, Webpack, PostCSS, Sass, Nginx, Docker, CircleCI (continuous integration), Google Cloud, Optimizely, Segment.io, etc. Built out core site, catalog page, product page, search, analytics, and payments flow -optimizing for UX, performance, and SEO. Server-side rendering and server/client side caching for blazing speeds. A/B testing for new feature releases (with Optimizely).
This resulted in page speed improvement of over 10x, reduced server costs, and drastically increased development speed and release cycles. The codebase I wrote was spun off into a boilerplate that was open sourced and used as the starting template for other apps both internal/external within the company (eg. sellusyourcar.com).
Hired and managed/mentored a team of 5 engineers, implemented agile/scrum processes.