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Prep plan
Updated weekly · Last refresh Oct 17Optum Health Services Data Scientist Interview Questions
The questions to prepare for a Optum Health Services Data Scientist interview. Questions from real interview reports rank first. Updated daily.
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SQL & Data ManipulationStart here. 1 question + 3 drills · ~38 min
SQL and Data Manipulation PracticeMedium
Assesses practical SQL and pandas skills and how you validate data outputs.
pandassql
Optum Health Services
Optum Health ServicesConsecutive Login Days SQLHard
Practice
Practice drillFind each user's longest consecutive login streak by deduplicating login dates and identifying gaps between days.
Date FunctionsData ManipulationProblem Solving
Didi Chuxing
ByteDance
Didi ChuxingByteDanceSQL, Pandas, and Case Study Live CodingMedium
Practice
Practice drillSummarize January pin activity and saves per creator while retaining creators whose qualifying pins received no saves.
pandasJoinsData Manipulation
Pinterest
PinterestScenario-Based Business CaseHard
Practice
Practice drillAggregate project outcomes and present a defensible SQL-based business case analysis.
project experienceJoinsbusiness problem
TikTok
TikTok2
Behavioral & Leadership1 question · ~8 min
Healthcare Problem-Solving ApproachMedium
Assesses healthcare-aware problem solving, teamwork, and handling of challenging projects.
Problem SolvingteamworkOptum Health Services
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The finish line: interview-readyComplete all 2 questions plus 3 hands-on drills to finish this plan.