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Updated weekly · Last refresh Oct 17

HashedIn Business Analyst Interview Questions

The questions to prepare for a HashedIn Business Analyst interview. Questions from real interview reports rank first. Updated daily.

42questions
~6htotal time
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1
SQL & Data ManipulationStart here. 10 questions + 1 drill · ~96 min
Second Highest Trader SalaryEasy
Practice

Find the second highest distinct salary from a single table using basic PostgreSQL ordering and limiting.

SubqueriesRankingSortingHashedIn
Optimize Slow SQL QueryHard

Evaluates your approach to diagnosing and improving SQL query performance.

HashedIn
SQL: Third Highest SalaryMedium
Practice

Use DENSE_RANK and a department join to find all active Brillio employees tied at the third-highest distinct salary.

sqlHashedIn
SQL Query OptimizationMedium
Practice
Practice drill

Optimize a slow PostgreSQL query that aggregates completed transactions while preserving customers with no matching activity.

Performance Tuningdatabase optimizationindexesDDroisysCapgeminiNomura
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2
Execution21 questions · ~180 min
Design a DNS SystemHard

Assesses system design thinking for distributed name resolution and scalability.

system designdnsHashedIn
Linear Programming CodingHard

Assesses your ability to implement optimization logic and translate it into code.

AlgorithmsHashedIn
Route Covering All AirportsHard

Assesses your graph modeling and algorithm selection for covering all nodes.

HashedIn
Design Sudoku GameHard

Assesses your ability to translate requirements into an implementable design and logic.

system designHashedIn
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3
Behavioral & Leadership11 questions · ~94 min
Team Work StyleMedium

Evaluates collaboration approach and how you work with others on technical tasks.

teamworkcollaborationHashedIn
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The finish line: interview-readyComplete all 42 questions plus 1 hands-on drill to finish this plan.