The interviewer might ask you the questions on the skill which you don't know and expects that you should know even though it's not your primary or secondary skill.
But overall good experience
Interview questions [1]
Question 1
Explain the difference between dataset and dataframe
Spark, cluster, jobs, optimization
Pyspark, scala
Real-time project based questions
I applied through an employee referral. The process took 4 weeks. I interviewed at EPAM Systems in Jan 2025
Interview
For the Odysseus team. Two-person panel technical interview with a little bit of live coding (in R and SQL), then met with the department head and discussed experience more in detail, the role, etc.
Interview questions [1]
Question 1
They asked some OHDSI, OMOP common data model specific questions e.g., defining a cohort.
I applied online. I interviewed at EPAM Systems (Chenani) in Mar 2025
Interview
2 technical round and 1 Hiring Manager round . every round will happen more than 1hr 30 mins. mostly of the question related to java and oops and design patterns