Software engineer intern May – August 2025

Cox Automotive

I spent summer 2025 on vAuto, Cox Automotive’s software for car dealerships. I rebuilt the vehicle source management system, wrote a Slack bot to handle blue/green traffic shifts, and built a tool for auditing the used-car media database.

Role: Software engineer intern
Timeline: May – August 2025
Source: Proprietary Internal Cox Automotive systems.
Stack: React, AWS (Cox's internal infrastructure), Slack API, REST APIs, blue/green deployments
Links: Cox Automotive

LinkedIn

−90%load time on the vehicle source management system

−75%redundant sources across 7,500+ dealerships

−80%blue/green traffic-shift time

1,000+content inconsistencies surfaced in new postings

Vehicle source management

The vehicle source management system tracks where inventory comes from across 7,500+ dealerships. It had gotten slow, and the same sources were copied all over the place. I added new API endpoints and an inheritance model, so a source is defined once and dealerships inherit it.

Load time went down 90%, and there are 75% fewer redundant sources.

Blue/green deployments

Shifting traffic during blue/green deployments across vAuto's three major applications was manual and easy to get wrong. I built a Slack bot that automates the shift, with staged diagnostics and safety checks along the way so an engineer can't accidentally send traffic to a broken build.

A shift now takes 80% less time, and anyone on the team can run one from Slack.

Auditing the media database

I built a React web app, backed by Cox's internal AWS infrastructure, for browsing a used-car media database. Once people could actually browse the data, they found more than 1,000 inconsistencies in new postings that nobody had noticed.