I applied through an employee referral. The process took 3 weeks. I interviewed at AppNexus in Dec 2014
Interview
Started with a phone screener, followed by an on-site interview (which consisted of five one-hour interviews), then a quick half hour interview with an executive in the department. Really friendly people, nice office and location. Interview questions were mostly behavioral, though some of the interviewers had more of a focus on technical questions.
Interview questions [1]
Question 1
How much money does an individual person (average consumer) make for AppNexus per year?
I applied online. The process took 3 weeks. I interviewed at AppNexus (New York, NY)
Interview
I applied online, 1 phone screen, then 1 day of final round (1 hour interviews each, 4 total interviews with 1 hour lunch in between). You get the offer or get rejected in 2-3 business days. Everyone is very nice and helpful.
Interview questions [1]
Question 1
1) Name a time when you (insert all scenarios), all of the standard things you might prepare for normally
2) Analytical test, what is AppNexus' total revenue, how many total bids does it serve, and in what specific markets
3) Describe a concept and explain it to me like I was a 5 year old
4) Name a process that you could improve (ex. public transportation system of Manhattan, unemployment services) if you had a reasonable/working budget
I applied through an employee referral. The process took 4 weeks. I interviewed at AppNexus (New York, NY) in Jul 2016
Interview
Applied online through a referral. All in all process took ~1 month from submission of application to completion, but a holiday occurred in between so your mileage may vary. I believe the holiday along with other factors delayed my decision by about a week. After a phone screen, a 6 hour "blitz day" and one additional 1 hour interview I received an offer. The staff was very friendly and prompt with their replied and could not have made the process any smoother than they did!
I applied through a recruiter. I interviewed at AppNexus (Sydney)
Interview
The interview process with AppNexus was quite lengthy, but overall a really positive experience. It consisted of an initial phone interview, two in-person interviews at their Sydney office, 3 Skype interviews with offices in London and Singapore, ending with one final interview at the Sydney office. It was a really good opportunity for me to learn more about the people that work there, the company, and the role that I was applying for.