Senior Engineer applicants have rated the interview process at O2 with 3 out of 5 (where 5 is the highest level of difficulty) and assessed their interview experience as 100% positive. To compare, the company-average is 80% positive. This is according to Glassdoor user ratings.
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HR call followed by screening followed by tech evaluation. The process was quite standard and well structured. I have no complaints as such. People were professional and knew what they were doing
Interview questions [1]
Question 1
technical domain questions, architectural, system dsign