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Airtel Digital Software Engineer Interview Questions

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

50questions
~8htotal time
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1
CodingStart here. 9 questions · ~87 min
String Permutation Check OptimizationEasy
Practice
Recently asked

Determine whether two Airtel Digital strings are permutations using character counting in O(n) time.

string manipulationAAirtel Digital
Add Two Numbers as Linked ListsEasy
Practice
Recently asked

Add two reverse-order digit lists using linked-list traversal and carry propagation.

AAirtel Digital
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2
SQL & Data Manipulation8 questions + 2 drills · ~97 min
Third Largest SQL QueryMedium
Practice
Recently asked

Find the third-highest distinct successful Airtel Thanks data-pack amount using DENSE_RANK and a customer join.

sqlAAirtel Digital
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
Calculate 30-Day User RetentionHard
Practice
Recently asked
Practice drill

Use CTEs, joins, and date filtering to calculate 30-day retention by signup cohort from login and feature usage data.

Window FunctionsDate FunctionsAggregationsCurefitReachMobiIndeed
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3
Execution9 questions · ~87 min
Code Quality in Fast SprintsMedium
Recently asked

Tests engineering practices for maintainable code under delivery pressure.

Agilecode qualitymaintainabilityAAirtel Digital
Debugging a Critical Production IssueMedium
Recently asked

Tests incident debugging skills, root-cause analysis, and communication under pressure.

production issuesProblem SolvingDebuggingAAirtel Digital
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4
Security & Infrastructure9 questions · ~87 min
TCP/IP and Core NetworkingMedium
Recently asked

Evaluates understanding of TCP/IP fundamentals and ability to connect theory to project work.

AAirtel Digital
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5
System Design9 questions · ~87 min
Rate Limiting and Messaging System DesignHard
Recently asked

Evaluates system design ability for high-throughput APIs and messaging semantics.

binary searchrate limitingAAirtel Digital
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6
Pipelines4 questions · ~39 min
Kafka Working Mechanism and Tree ViewsMedium
Recently asked

Assesses tree traversal understanding and distributed messaging fundamentals.

streamingkafkaAAirtel Digital
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7
More topics2 questions · ~19 min
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The finish line: interview-readyComplete all 50 questions plus 2 hands-on drills to finish this plan.