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Updated weekly · Last refresh Nov 6

A tech company in San Francisco Data Scientist Interview Questions

The questions to prepare for a A tech company in San Francisco Data Scientist interview. Questions from real interview reports rank first. Updated daily.

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1
A/B Testing & ExperimentationStart here. 1 question · ~8 min
Acceptance Testing an ABMMedium

Evaluates experimental validation, model fit, and traceability from questions to outputs.

A tech company in San Francisco
2
SQL & Data Manipulation1 question + 3 drills · ~38 min
Concatenated Substring IndicesHard

Tests your ability to solve string and indexing problems efficiently.

string manipulationA tech company in San Francisco
String Character OccurrencesMedium
Practice
Practice drill

Count each case-sensitive character in an FIS PayDirect message using PostgreSQL string functions, a CTE, a join, and aggregation.

string manipulationFisglobalFISFis global
Self Intro and SQL FocusMedium
Practice
Practice drill

Demonstrate SQL experience by calculating and ranking successful Stripe payments per customer.

Joinssqlself introductionStripe
DNA Sequence String ManipulationMedium
Practice
Practice drill

Clean, validate, and transform DNA strings while calculating sequence length, GC content, and reverse complements.

data cleaningData Manipulationstring manipulationScribd

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3
Behavioral & Leadership2 questions · ~16 min
Walking Through Your ResumeEasy

Tests structured self-introduction, career narrative, motivation, and ability to connect past experience to the role.

backgroundresume walkthroughself introductionA tech company in San Francisco
Presentation and CodingMedium

Assesses communication clarity and practical coding execution.

presentationA tech company in San Francisco
The finish line: interview-readyComplete all 4 questions plus 3 hands-on drills to finish this plan.