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Updated weekly · Last refresh Aug 30

VTG Software Engineer Interview Questions

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

21questions
~3htotal time
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1
CodingStart here. 7 questions · ~69 min
Two Sum with TargetEasy
Practice

Use a hash map to find two array elements that sum to a target in O(n) time.

Hash TablesArraysStringsVTG
Linked List ReversalEasy
Practice

Reverse a singly linked list in-place using iterative pointer manipulation.

RecursionLinked ListsArraysVTG
Difference Between Interface and Abstract Class in JavaMedium

Explain the differences between interfaces and abstract classes in Java and when to use each.

Hash TablesArraysStringsVTG
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2
Execution3 questions · ~29 min
Recover a Slipping ProjectMedium

Explain how you would diagnose and recover a project that is falling behind schedule without losing stakeholder trust.

Success CriteriaRoadmappingRisk AssessmentVTG
Handling a Critical Production BugEasy

Describe how you handled discovery, escalation, triage, and containment of a critical bug under release pressure.

Trade-offsSuccess CriteriaRisk AssessmentVTG
RESTful APIs and BenefitsEasy

Tests understanding of REST principles and why teams use them.

Trade-offsSuccess CriteriaRoadmappingVTG

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3
Behavioral & Leadership10 questions · ~98 min
Owning Technical Decisions Cross-FunctionallyMedium

Tests ownership of technical decisions, cross-functional collaboration, and clear communication under real project constraints.

recent projectscollaborationtechnical experienceVTG
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4
More topics1 question · ~10 min
Optimize a Slow SQL QueryMedium

Tests your performance troubleshooting skills for dv01-scale reporting queries.

JoinsData WranglingCTEsVTG
Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Optimize Dashboard Revenue Join QueryHard
Practice
Practice drill

Optimize a multi-join dashboard query using CTEs and window functions to reduce repeated work.

JoinsData WranglingCTEsApptio
Join Customer Tickets and Error LogsHard
Practice
Practice drill

Use joins to correlate customer tickets with error logs and identify recurring issue patterns.

JoinsData WranglingCTEsAveva
Reconcile Dashboard and Source TotalsMedium
Practice
Practice drill

Use CTEs, joins, aggregations, and window functions to isolate why dashboard revenue differs from source transactions.

JoinsData WranglingCTEsSynechron
The finish line: interview-readyComplete all 21 questions plus 3 hands-on drills to finish this plan.