I applied through a recruiter. The process took 3 days. I interviewed at Microsoft (Redmond, WA) in Jan 2015
Interview
CS questions + machine learning + linear regression. Not a CS major so only answered linear regression questions. Focused on computational part rather than mathematical part. I would suggest reviewing the basic data structure & algorithms, machine learning algorithms, and stats. It's purely technical. No behavioral questions at all. I think someone with a CS major/minor would be in better position for this job, instead of someone who studies statistics or math.
Interview questions [1]
Question 1
How to compute an inverse matrix faster by playing around with some computational tricks?
A entrevista consistiu em um teste técnico online com algumas perguntas tecnicas do hackerrank que deveriam ser respondidas em um periodo de tempo predefinido (acho que dentro de 1 horas).
Feeling thrilled to have accepted the offer, I look back on this interview process as both challenging and rewarding. It began with a technical round where I tackled a complex A/B testing design question, followed by a SQL query on user retention. The final stages included a system design discussion that had me sweating, but honestly, the system design section on PracHub prepared me well. Each step pushed my limits, but the culmination was definitely worth it, landing me a role at Microsoft.
Interview questions [2]
Question 1
Design an A/B test to measure the impact of a new ranking change in Bing, and explain how you would handle network interference between treatment and control users.
Write a SQL query that computes 7-day rolling user retention from a daily events table, then flags cohorts whose week-over-week retention dropped more than 10%.
Phone screen with HR/recruiter. Less than 10 mins. Very basic mostly about role fit and my background and resume. Did not hear back from them at all. Very unenthusiastic during the call