Glassdoor users rated their interview experience at 4R Systems as 40.9% positive with a difficulty rating score of 3 out of 5 (where 5 is the highest level of difficulty). Candidates interviewing for Research Analyst and Operations Research Analyst rated their interviews as the hardest, whereas interviews for Research Analyst and OR Analyst roles were rated as the easiest.
The hiring process at 4R Systems takes an average of 7 days when considering 23 user submitted interviews across all job titles. To compare, the average duration of hiring at similar companies like BlackRock, Inc. is 14 days, Fabricated Software, Inc. is 2 days, and Apple Inc. is 21 days. Candidates applying for Operations Research Analyst had the quickest hiring process (on average 6 days), whereas Operations Research Client Analyst roles had the slowest hiring process (on average 21 days).
It was a phone interview started with company intro, and then he asked some probability questions. There're the technical part, and also ask you to explain it to non-technical people.
Interview questions [1]
Question 1
There're 3 coins (2 normal, 1 special), toss 1, and see a head, what is the probability this coin is the special one?
I applied through college or university. The process took 2 weeks. I interviewed at 4R Systems (New York, NY) in Feb 2018
Interview
30-minute phone call, starting with an introduction of the company and what kind of candidate they are looking for. Then a probability problem, and asked to explain this to a manager or some others who do not know much about probability.
Interview questions [2]
Question 1
A probability problem of picking balls. Solved with Bayes Rules.
I applied online. The process took 5 days. I interviewed at 4R Systems in Jan 2018
Interview
Took few days after submitting resume to the first round interview. The first round interview was about 30 minutes with a VP, first ten minutes he introduced the company and what kind of candidate he is looking for. Then he asked some probability questions.
Interview questions [1]
Question 1
The question was simple conditional probability problem, can be solved easily with bayesian theorem.