We started off with AngularJS but switched to ReactJS later on, and thats mostly what I worked with.
We used Github to maintain a source code depository and also for continuous integration purposes. Jenkins was used for builds and testing. Our API backend used NodeJS.
We also used SASS for CSS, Jest for unit tests, GulpJS, NightwatchJS for automation testing and some other third party libraries.
I was mainly responsible for:
-Integrating the homepage components like the item carousels, POV carousel, personalization modules with Tempo modules and our Node API Backend.
-Integrating them with the Electrode framework
-Integrating with analytics frameworks like Beacon and Omniture
-Writing up end to end automated testing suites using Magellan (internal Walmart Nightwatch extension) and NightwatchJS.
Most notable/challenging project
The biggest project I worked on at Walmart Grocery was not only maintenance and design of the grocery homepage but also writing the end to end testing framework using NightwatchJS and integrating third party APIs particularly the analytics APIs of Omniture and Beacon.