The process took 2 days. I interviewed at AT&T (Bothell, WA) in Mar 2010
Interview
I initially had a phone screen with one a team manager. Questions were basic Solaris questions, some network questions and a detailed overview of the job and location. I was contacted to come in for a group interview with more team managers. I was given a more detailed overview of the culture, the company goals and then was peppered by technical questions. I was asked how to calculate IP subnets which I struggled to answer. I was assured that they use a calculator and not to worry that I couldn't do this on the fly. Other than that the questions were fairly easy. I felt I had a great interview and was certain I was going to get an offer. Didn't happen, they chose someone else, making me wonder about that IP question. I was sad! I really wanted this job but who knows maybe it will open again and they will hire me.
One phone interview and then a video interview. Phone interview was roughly 30 minutes, video interview was a bit longer, maybe 45 minutes. Process was pretty straightforward, some technical questions and behavioral questions.
I applied through an employee referral. The process took 4 months. I interviewed at AT&T (Middletown, NJ) in Oct 2024
Interview
Had an OA, leetcode easy, basic sql question with joins and a werid system level question/brain teaser. The brain teaser was not all that hard but something you cant really study for. If passed phone screening, then live technical with a leetcode easy and then debugging a leetcode medium, in my case LRU cache
Interview questions [1]
Question 1
Tell me about a time you had to speak in public and were not prepared
The process took 1 week. I interviewed at AT&T (El Segundo, CA) in Oct 2017
Interview
The hiring manager gave me a quiz testing my high-level problem solving skills in compression, queuing theory, and Wireshark packet captures. Then he graded my answers and based on my score determined whether or not to hire me. He briefly asked me about my resume.
Interview questions [1]
Question 1
Here is a list of Wireshark packet captures in hexadecimal and the packet fields. What is the value located in a certain field?