Je suis informaticien? :S
Everything about my answer is correct, but I still get marked wrong. Impossible to complete this exercise
What was your exact answer and what type of exercise was it?
Is computer scientist the only possible translation? Could he be a programmer or systems manager or some other job relating to computers?
BTW, my speller considers "Julien" a typo--It accepted "Julian" which Duo considers a typo. Sigh!