airtel Backend Engineer Interview Questions

The questions to prepare for a airtel Backend Engineer interview. Questions from real interview reports rank first. Updated daily.

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CodingStart here. 9 questions · ~94 min

Compute the largest sum of any contiguous subarray using Kadane's algorithm in O(n) time.

Searching in a Binary Search TreeEasy

Explain how BST search works by comparing the target at each node and analyze best, average, and worst-case time complexity.

time complexitySearchingTrees

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Maximum Subarray VariantMedium

Tests your understanding of maximum subarray patterns and adapting them to a variant requirement.

Algorithms

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Technical Fundamentals5 questions · ~52 min

Assesses your ability to explain framework benefits and design choices for microservices.

SOAP vs REST APIsMedium

Assesses your understanding of API styles and when to use each in backend systems.

Communicationapi designtechnical knowledge

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JVM Memory ManagementMedium

Assesses your understanding of JVM memory behavior and its impact on backend performance.

memory managementjavaperformance

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System Design4 questions · ~42 min

Scalable Notification SystemHard

Evaluates system design skills for building reliable, scalable notification delivery.

system designnotification systemscalability

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SQL vs NoSQL for ProfilesHard

Assesses data modeling and storage trade-offs for user-profile workloads.

nosqlsqldatabase design

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