The Old Switch n' Bait
by in Tales from the Interview on 2013-08-01A few years back, RJ was hiring developers. Besieged by pretenders, he had devised an online coding test and hired a recruitment firm to subject candidates to it in hopes of weeding out the lower-quality developers. Since RJ and a teammate had to assess each candidate by themselves, the test was an important time-saver: if the candidate's code wouldn't even compile, refused to run, or obviously didn't work, that was an easy write-off. But this story wouldn't be much of a WTF if it were merely about some feckless applicant.
One day they received a submission from a Mrs. Qiu Jiang. Her code not only compiled and ran, it actually worked. It passed RJ's test cases quickly too, which meant Qiu hadn't simply brute-forced her way through. RJ had high hopes for their face-to-face interview.