I applied through college or university. The process took 1 day. I interviewed at ADTRAN (Boston, MA) in Jan 2014
Interview
Asked some technical very easy C questions. Write a simple function that does this etc. Then it was more general C++. What is a friend function etc. There was not much more to it than that. One of the questions I got was the lonely integer problem. Aka find 1 in 5 5 1 6 7 8 6 7 8
I applied online. The process took 2 weeks. I interviewed at ADTRAN
Interview
No automated tasks or programming tasks at all, instead an in-person meeting with the team and programming tasks describing what your experience is and describing some side projects etc. There was only one meeting after their internal CV screening. The response was rather fast, but the initial employment was rather slow. Ultimately I joined different team than I was talking with and worked with different tech stack.
Interview questions [1]
Question 1
To describe some of of my more complicated projects, how I approached work, what technologies I used, how i collaborated with others.
I applied through other source. The process took 1 week. I interviewed at ADTRAN (Israel) in Jun 2025
Interview
First I got a call from HR, and then I had a frontal interview. It was mostly professional. Was asked about networks, switches, and C++ questions, one of which was to write a code for the Blackjack casino game
Interview questions [1]
Question 1
If you had all the memory in the world, how would you store your data so that you can access it in O(1).
I applied through college or university. The process took 1 day. I interviewed at ADTRAN (New Delhi) in Sep 2019
Interview
First round was based on mcqs of computer basics like os,dccn,DBMS logical questions.
Followed by 2 technical interview .in 1st Tr they asked about linked list and network concepts was about 1hr 30 min.
2 tr was based on more dccn concepts and project.
Next was hr round they asked about family background,tell about yourself,about ADTRAN .
Software Engineer applicants have rated the interview process at ADTRAN with 2.8 out of 5 (where 5 is the highest level of difficulty) and assessed their interview experience as 88% positive. To compare, the company-average is 78.2% positive. This is according to Glassdoor user ratings.
Candidates applying for Software Engineer roles take an average of 19 days to get hired, when considering 9 user submitted interviews for this role. To compare, the hiring process at ADTRAN overall takes an average of 17 days.
Common stages of the interview process at ADTRAN as a Software Engineer according to 9 Glassdoor interviews include:
One on one interview: 26%
Skills test: 22%
Phone interview: 17%
Group panel interview: 17%
Personality test: 9%
IQ intelligence test: 4%
Background check: 4%
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