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Updated weekly · Last refresh Aug 30

NPCI Software Engineer Interview Questions

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

48questions
~7htotal time
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1
CodingStart here. 31 questions · ~262 min
Palindrome ProgramEasy
Practice

Determine whether text is a palindrome after ignoring case and non-alphanumeric characters using two pointers.

ProgrammingNPCI
Debugging a Memory LeakHard
Recently asked

Tests diagnostic skills for JVM memory issues that can impact availability of NPCI transaction services.

memory leakDebuggingproductionNPCI
Balanced BST Time ComplexityMedium
Recently asked

Tests core data structure knowledge needed to build efficient components for NPCI transaction workflows.

time complexityAlgorithmsNPCI
Spring Boot Request LifecycleMedium
Recently asked

Tests ability to reason about request flow in Spring Boot services used in NPCI transaction processing.

javaspring bootNPCI
HashMap vs ConcurrentHashMapMedium
Recently asked

Tests understanding of Java concurrency and thread safety for high-throughput systems like NPCI transaction processing.

javaconcurrencyNPCI
Custom Spring Security FilterHard
Recently asked

Tests secure request handling and Spring Security customization relevant to NPCI payment platforms.

Securityspring bootNPCI
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2
Behavioral & Leadership16 questions · ~135 min
Exception Management in ProductionMedium
Recently asked

Tests production-grade error handling practices to maintain reliability in NPCI transaction systems.

javaproductionNPCI
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3
More topics1 question · ~8 min
OOP, DBMS, and SQL QueriesMedium

Tests OOP fundamentals plus DBMS and SQL query knowledge.

sqlNPCI

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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Second Highest Trader SalaryEasy
Practice
Practice drill

Find the second highest distinct salary from a single table using basic PostgreSQL ordering and limiting.

SubqueriesRankingSortingeClinicalWorksInformaticaSpectraforce Technologies
Second-Highest Transaction Amount QueryMedium
Practice
Practice drill

Find the second-highest distinct transaction amount using a subquery in PostgreSQL without LIMIT.

SubqueriesRankingsalaryCapgemini FSSBUFreechargeNPCI
SQL Queries for RankingMedium
Practice
Practice drill

Rank active HSBC employees by division and return every employee tied for the highest or second-highest salary.

javasqlHsbc
The finish line: interview-readyComplete all 48 questions plus 3 hands-on drills to finish this plan.