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Updated weekly · Last refresh Aug 30

HashedIn Business Analyst Interview Questions

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

44questions
~6htotal time
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1
SQL & Data ManipulationStart here. 10 questions + 2 drills · ~103 min
Second Highest Trader SalaryEasy
Practice

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

SubqueriesRankingSortingHashedIn
Key Constraints in Relational DatabasesEasy

Explain how primary key, foreign key, and unique key constraints differ and how they enforce data integrity in relational databases.

basicssqldata integrityHashedIn
Keys and ConstraintsEasy

Tests your fundamentals of relational integrity and constraint semantics.

database conceptsHashedIn
SQL Query OptimizationHard

Tests your approach to SQL tuning, execution plans, and performance trade-offs.

performanceHashedIn
Second Maximum Salary QueryEasy
Practice
Practice drill

Use DENSE_RANK and a LEFT JOIN to find active HashedIn employees earning the second-highest distinct salary.

sql queriesNewgen SoftwareHashedInHashedIn by Deloitte
Sum From 1 to 1,000,000Easy
Practice
Practice drill

Calculate the sum of integers from 1 to 1,000,000 using PostgreSQL aggregation and filtering.

AlgorithmsVirtu Financial
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2
Execution22 questions · ~182 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
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3
Behavioral & Leadership12 questions · ~99 min
Explaining Technical Concepts SimplyEasy

Tests communication and customer education through a concrete example of simplifying a technical concept for a non-technical audience.

CommunicationOwnershipHashedIn
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The finish line: interview-readyComplete all 44 questions plus 2 hands-on drills to finish this plan.