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Updated weekly · Last refresh Sep 22

Fortitude Systems Data Analyst Interview Questions

The questions to prepare for a Fortitude Systems Data Analyst interview. Questions from real interview reports rank first. Updated daily.

3questions
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1
Date FunctionsStart here. 1 question · ~12 min
SQL for Last 30 DaysEasy
Practice

Retrieve records from the last 30 days where a valid phone number is currently active.

Date Functionsnull handlingData WranglingFortitude Systems
2
Pivot1 question · ~12 min
Deduplicating Large Excel ListsMedium

Tests practical data cleaning skills and step-by-step execution on large contact datasets.

PivotJoinsData WranglingFortitude Systems

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3
Data Wrangling1 question + 1 drill · ~22 min
Handling Missing or Corrupt DataMedium

Tests your approach to data quality, validation, and recovery for critical fields.

Data WranglingCase WhenQualityFortitude Systems
SQL for Clinical CriteriaMedium
Practice
Practice drill

Use joins and a CTE to identify pediatric patients with asthma, low oxygen saturation, and active albuterol prescriptions.

null handlingJoinsData WranglingChildren's Hospital of Philadelphia
Hands-on SQL practiceWrite and run real queries in the editor. 1 drill · ~10 min
SQL Salary Threshold QueryEasy
Practice
Practice drill

Find Fortitude employees earning at least $10,000, including department details with a LEFT JOIN.

sqlFortitude Systems
The finish line: interview-readyComplete all 3 questions plus 2 hands-on drills to finish this plan.