Recruiter was responsive and communicating through out the process. The process consisted of 5 rounds, after the recruiter call - hiring manager interview, System Design, Data Aptitude, Behavioral, and Technical Screening
Interview questions [1]
Question 1
Data modeling and system design, Questions around data quality, python/AWS/SQL
The process took 6 weeks. I interviewed at Oura (Helsinki, Southern Finland) in Aug 2025
Interview
The interview was smooth, though several steps in the interview. My other programming projects were enough for not having additional coding challenges which was really nice (and rare based on my interviewing experience). People I chatted with were nice and the atmosphere was relaxed.
I applied through an employee referral. The process took 4 weeks. I interviewed at Oura (San Francisco, CA) in Oct 2021
Interview
Superfast process (4 weeks) due to the high need to fill the role.
Started with a brief recruiter call, followed by a coding interview (1 hour, typical Python data wrangling/Hackerrank-type questions). After that about three rounds with managers and the leadership.
It was a pleasant process, and the interviewers were kind and informative. Communication was slow sometimes due to high hiring rate, and shortage of recruiters.
Interview questions [3]
Question 1
Given this Pandas data frame, clean the data (with detailed instructions), and provide preliminary analysis.
