I applied online. The process took 5 days. I interviewed at AT&T (Roswell, GA) in Oct 2015
Interview
Applied through AT&T homepage, got an email for simple question, then scheduled the phone interview. Interview went good, but they are looking for more professional candidate.
Mainly focus on your work experience, what did you do during your current job? Why you leave? What did you do with other programming language besides the Java? What the difference between Java and Clojure?
Interview questions [1]
Question 1
Data join question:
The higher the Key Performance Indicator is, the better the performance of the tower. Please provide a solution to determine the best and worst performing tower, as well as the average tower performance per market.
Datasets
KPI Dataset = TOWERID, DATE, KPI
Market Info = TOWERID, MARKET
I applied online. The process took 3 weeks. I interviewed at AT&T (Dallas, TX) in Sept 2021
Interview
Three rounds. Very detailed technical questions to discern technical acumen. Each interview had someone technical and someone not as technical on it. The non technical person mainly responded to questions at the end of each interview dealing with negotiations.
Interview questions [1]
Question 1
One thing they asked was about distributed systems.
