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Appex Innovations Software Engineer Interview Questions

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

6questions
~1htotal time
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1
SQL & Data ManipulationStart here. 1 question + 3 drills · ~38 min
Difference Between WHERE and HAVING ClausesEasy
Recently asked

Explain the differences between WHERE and HAVING clauses in SQL and when to use each.

JoinsData WranglingAggregationsAAppex Innovations
Optimize a Slow SQL QueryHard
Practice
Practice drill

Rewrite a slow PostgreSQL loan payment query to reduce scanned rows while preserving the required aggregated results.

database optimizationJoinsData WranglingAmeripriseEEltro Cyberchrome PrivateEnergyHub
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
Monthly Campaign Performance SummaryEasy
Practice
Practice drill

Aggregate January 2024 campaign data by channel using GROUP BY, filtering, and ordering by total clicks.

JoinsData WranglingAggregationsDNVEversanaDiscord
2
Security & Infrastructure1 question · ~8 min
RBAC and IAM ImplementationHard
Recently asked

Evaluates your security design skills for authorization and identity management systems.

SecurityiamAAppex Innovations

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3
System Design2 questions · ~16 min
Member Registration REST APIHard
Recently asked

Evaluates your ability to design a production-ready REST API with persistence and framework integration.

database designspring bootAAppex Innovations
Healthcare Management PortalHard
Recently asked

Assesses your ability to model a domain and build an OO application with clear responsibilities.

AAppex Innovations
4
Behavioral & Leadership2 questions · ~16 min
APIs vs Web ServicesEasy
Recently asked

Assesses your baseline understanding of API and web service concepts and terminology.

APIsAAppex Innovations
HashMap vs ConcurrentHashMapMedium
Recently asked

Assesses your understanding of Java concurrency and thread-safe collection design.

multithreadingjavaarchitectureAAppex Innovations
The finish line: interview-readyComplete all 6 questions plus 3 hands-on drills to finish this plan.