OKCupid Data Scientist | October 2020

T
treywarrenApril 5, 2021, 01:12 AM
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Company: OKCupid

Position: Data Scientist

Location: nan

Level: Mid-level

Outcome: Techncal Screen Rejected

How was the interview process? What was it like?

Overall, I thought interviewing at OKCupid was a great experience. I was one of my first data science interviews post-pandemic and it felt as seamless as an in-person interview. It began with the Recruiter screening, then I had an hour call with the Hiring Manager where we talked about ML and the libraries we liked, then came the technical assessment. They said used to be a take-home (which I prefer) but had changed to in-person last year (though currently via Zoom) because they found that take-homes hadn't been adequately vetting their data candidates). It was an hour, where they asked 3-5 SQL questions (however many you got through in 30 min) and 1-2 Python questions. I heard back from them a few days after the assessment the recruiter reached out to inform me that, while my Python was adequate, I didn't complete the SQL efficiently enough for their liking so they were going to move forward with another applicant. Their decision made sense, my SQL is just so-so.

What technical questions were asked?

Python / Pandas, Data Structures and Algorithms, SQL / Analytics

What was one of your solutions?

def count_substring(string, n):
    output = {}
    for i in range(len(string)-1):
        gram = string[i:i+n]
        if (gram not in output):
            output[gram] = 1
        else:
            output[gram] += 1
    return output

Data Scientist
I
Ichimoku
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Ichimoku
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