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Updated weekly · Last refresh Aug 30

Deccan International Software Engineer Interview Questions

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

18questions
~3htotal time
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1
CodingStart here. 7 questions · ~64 min
Linked List ReversalEasy
Practice

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

RecursionLinked ListsArraysDeccan International
Stack vs Queue DifferencesEasy

Compare stack and queue behavior, access order, operations, and common use cases in linear data structures.

StackQueueArraysDeccan International
Binary Search ImplementationEasy

Tests your understanding of efficient search algorithms and edge-case handling.

ArraysSearchingDeccan International
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2
Behavioral & Leadership7 questions · ~64 min
Cross-Functional Teamwork Under PressureEasy

Tests collaborative execution, communication, and ownership when working with multiple teammates under delivery pressure.

Stakeholder ManagementCommunicationLeadershipDeccan International
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3
More topics4 questions · ~37 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 AssessmentDeccan International
Optimizing a Slow QueryHard

Tests query tuning skills, indexing strategy, and diagnosing performance bottlenecks.

SubqueriesJoinsAggregationsDeccan International
Scalable System DesignHard

Tests your system design skills for scalability, reliability, and performance as Deccan International’s deployment planning usage grows.

Feature StoreRetrievalRecommendation SystemsDeccan International
Prioritize Work Under Tight DeadlinesEasy

Explain how you prioritize competing work under time pressure while making trade-offs and keeping stakeholders aligned.

Trade-offsRoadmappingScope ManagementDeccan International

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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Top Customers by Net SalesMedium
Practice
Practice drill

Compute top 10 customers by net sales using joins and aggregations, ordering by revenue with deterministic tie-breaking.

SubqueriesJoinsData WranglingGain DigitalTCSZest AI
Unify CRM and Google Analytics ViewHard
Practice
Practice drill

Merge CRM orders with GA events via an identity map to build a customer-level view using joins, window functions, and monthly rollups.

SubqueriesJoinsData WranglingArtefact
Analyze Delivery Performance with SubqueriesMedium
Practice
Practice drill

Use subqueries to compare each courier's delivery speed and on-time rate against the network average.

SubqueriesJoinsAggregationsInstacart
The finish line: interview-readyComplete all 18 questions plus 3 hands-on drills to finish this plan.