Top 36

Prep plan

Updated weekly · Last refresh Oct 17

Upstack Software Engineer Interview Questions

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

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CodingStart here. 17 questions + 1 drill · ~147 min

Using Zones.js in AngularMedium

Assesses understanding of Angular change detection and the role of zones.js.

Upstack

Angular Route StrategyMedium

Assesses understanding of Angular routing behavior and URL handling.

Upstack

Writing SAS Code Under PressureMedium

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Practice drill

Identify missing, unexpected, duplicate, and inconsistent derived records using PostgreSQL validation queries.

Codingdata accuracydata verificationCCytel Inc

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SQL & Data Manipulation3 questions + 2 drills · ~44 min

Postgres WAL and Its PurposeMedium

Evaluates understanding of Postgres write-ahead logging and durability/recovery concepts.

python

Upstack

Spring Hibernate TransactionsMedium

Tests your understanding of ORM and transaction management in Java-based backend systems.

Upstack

Optimizing Slow Spreadsheet WorkflowsMedium

Practice

Practice drill

Summarize active workflows, identify slow runs, and flag missing execution data.

experiencedatabase optimizationdata management

AMD

Using SQL and PythonMedium

Practice

Practice drill

Use SQL aggregation and Python validation to explain how a workplace data problem was solved and measured.

JoinsProblem Solvingsql

Lalamove

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Behavioral & Leadership11 questions · ~89 min

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More topics5 questions · ~40 min

Tell Me About a Time You Missed a DeadlineMedium

Explain why you missed a deadline, how you managed stakeholders, and what you changed to prevent a recurrence.

system designCodingExecution

Upstack

React State Management PatternsMedium

Tests your knowledge of React state patterns and your ability to choose the right approach for a given UI.

reactstate managementtechnical knowledge

Upstack

Maintainable and Testable CodeMedium

Tests your engineering practices for code quality, test strategy, and long-term maintainability.

code qualitymaintainabilityTesting

Upstack

Email Integration ArchitectureMedium

Tests your system design approach for reliable email workflows, retries, and integration boundaries.

system architecture

Upstack

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