Back End Developer applicants have rated the interview process at American Express 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 61.7% positive. This is according to Glassdoor user ratings.
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One stage interview though agency for short term project. Conducted remotely over webex. Some generic C# questions, databases, entity framework, graphQl etc. I had space and time to ask about the project,.