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Dexian Signature Consultants Software Engineer Interview Questions

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

30questions
~5htotal time
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1
CodingStart here. 8 questions · ~75 min
Linked List ReversalEasy
Practice

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

RecursionLinked ListsArraysDexian Signature Consultants
Longest Substring Without RepeatsMedium
Practice

Find the longest substring with all unique characters using a sliding window.

Hash TablesStringsTwo PointersDexian Signature Consultants
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2
System Design4 questions · ~38 min
Design a URL Shortening RecommenderHard

Design a URL shortener that ranks and recommends short links while handling abuse, freshness, and monitoring at scale.

Feature StoreModel ServingDexian Signature Consultants
Data Consistency in Distributed SystemsHard

Tests distributed systems knowledge, consistency models, and failure handling.

distributed systemsscalabilitydata consistencyDexian Signature Consultants
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3
Behavioral & Leadership14 questions · ~132 min
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4
More topics4 questions · ~38 min
SQL vs NoSQL Trade-OffsMedium

Tests data modeling judgment and understanding of consistency and scalability.

InfrastructureTrade-offsData ModelingDexian Signature Consultants
Optimize Slow QueryHard

Tests query optimization skills and performance troubleshooting for data systems.

SubqueriesJoinsAggregationsDexian Signature Consultants
Real-Time Data System ArchitectureHard

Tests system design skills for low-latency pipelines and scalable real-time processing.

InfrastructureStream ProcessingOrchestrationDexian Signature Consultants
Active Networking CertificationsMedium

Assesses your current networking credentials relevant to infrastructure and security expectations.

NetworkingDexian Signature Consultants
Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Find Duplicates in SQLEasy
Practice
Practice drill

Use GROUP BY and HAVING to find duplicate policy records in Ryan Specialty data.

Group ByHavingAggregationsGramenerCarGurusFactored
Top N Per Group QueryEasy
Practice
Practice drill

Use PostgreSQL DISTINCT ON to find the highest-scoring CustomerInsights.AI record in each insight group.

Window FunctionsRankingGroup ByApplied MaterialsDexian Signature Consultants
Running Total With Window FunctionsEasy
Practice
Practice drill

Calculate each user's running order total over time using a window function.

Window FunctionsDate FunctionsRunning TotalsInspire11Western DigitalFactual
The finish line: interview-readyComplete all 30 questions plus 3 hands-on drills to finish this plan.