They typically do a day-long interview. You will walk around the facility meeting various people throughout the organization. Mostly relaxed discussion and some questions. You will most likely meet several people from the particular group you are interviewing for a positions with. Time spent with each person will be about 45-60 minutes.
Interview questions [1]
Question 1
How would you measure the surface area of the ceiling?
I applied through college or university. The process took 5 weeks. I interviewed at ADTRAN
Interview
Some company representatives came to a university career fair, where the first non-technical interview took place the day after the career fair. Then within about a week I was contacted by a recruiter to go and interview on the ADTRAN campus (which is absolutely lovely, by the way). They provided hotel accomodations for the night before at the Best Western hotel which is about 15 minutes away (driving) from their location. The interview day consisted of approximately 30 minute interviews from 10:30 AM to 4:45 PM. During each time slot, I was interviewed by 1 or 2 people. Interview types varied but, in general, there were technical interviews and non-technical interviews. The technical interviews consisted of writing code ranging from reversing a string to bit manipulations to questions about polymorphism and object-oriented programming. There were also some OS questions thrown in (i.e. deadlock causes and prevention, mutexes and semaphores, etc.) The non-technical interviews involved questions about previous experience, items on my resume, and "What would you do in this situation?" type questions. Overall the day was a bit exhausting and a bit repetitive for the non-technical stuff, but it was definitely fun.
Interview questions [1]
Question 1
Question difficulty varied; none stick out as "most difficult" or "unexpected".
I applied through college or university. The process took 3 weeks. I interviewed at ADTRAN (Huntsville, AL) in Oct 2014
Interview
It is extensive: we started at 8:45 in the morning, and I was taken from room to room to interview with multiple groups of people. The first and last room consisted of managers for behavioral interviews, and two groups in between conducted technical interviews. The behavioral interviews are manageable, but the technical interviews were fairly difficult for me (which is likely why I did not get an offer). In the middle of all of this, I was treated to lunch where I was interviewed one-on-one by a higher-ranking manager. The interview process ended around 1pm.
Interview questions [1]
Question 1
Design an algorithm that selects the closest n stars to one star.
Software Development Engineer applicants have rated the interview process at ADTRAN with 3.6 out of 5 (where 5 is the highest level of difficulty) and assessed their interview experience as 80% positive. To compare, the company-average is 78.2% positive. This is according to Glassdoor user ratings.
Candidates applying for Software Development Engineer roles take an average of 20 days to get hired, when considering 5 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 Development Engineer according to 5 Glassdoor interviews include:
Group panel interview: 23%
One on one interview: 23%
Skills test: 23%
Phone interview: 15%
Background check: 8%
IQ intelligence test: 8%
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