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Updated weekly · Last refresh Sep 19

Morningstar Software Engineer Interview Questions

The questions to prepare for a Morningstar Software Engineer interview. Questions from real interview reports rank first. Updated daily.

50questions
~7htotal time
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1
SQL & Data ManipulationStart here. 5 questions + 2 drills · ~63 min
Second Highest Without AggregatesHard
Practice
Recently asked

Find the second highest salary in each department without using aggregate functions.

SubqueriesRankingSelf-JoinsMorningstar
Second-Highest Transaction Amount QueryMedium
Practice
Practice drill

Find the second-highest distinct transaction amount using a subquery in PostgreSQL without LIMIT.

SubqueriesRankingsalaryCapgemini FSSBUFreechargeNPCI
SQL for Risk-Adjusted Top PortfoliosHard
Practice
Practice drill

Rank portfolios by three-month rolling risk-adjusted returns using monthly performance and risk-free rates.

Window Functionsfinancial datacomplex queriesMorningstar
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2
Coding20 questions · ~171 min
Thread-Safe Singleton DesignHard
Recently asked

Explain how to implement a thread-safe singleton, including lazy initialization, locking, and common pitfalls.

ArraysStringsMorningstar
OOP Core Concepts ExplainedEasy
Recently asked

Explain inheritance, polymorphism, and encapsulation in OOP with Python examples and when to use each.

javaabstractionoopMorningstar
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3
System Design4 questions · ~34 min
Cloud Services and SOLID PrinciplesMedium
Recently asked

Assesses cloud-native design thinking and maintainable object-oriented architecture.

cloud servicessolid principlesMorningstar
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4
Execution11 questions · ~94 min
API Protocol and Code Debugging StrategyMedium
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Assesses how you structure solutions and debug when working through API and code issues.

behavioral questionsMorningstar
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5
Behavioral & Leadership6 questions · ~51 min
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6
More topics4 questions · ~34 min
Data Pipelines and AWS ComponentsHard
Recently asked

Assesses practical understanding of ETL and AWS services for building data pipelines.

data pipelineETLawsMorningstar
Using AWS in Your WorkMedium
Recently asked

Assesses your practical experience with AWS services and real-world usage.

awsMorningstar
Checked vs Unchecked ExceptionsEasy
Recently asked

Tests your judgment about error handling strategy and Java exception design.

error handlingjavaMorningstar
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The finish line: interview-readyComplete all 50 questions plus 2 hands-on drills to finish this plan.