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Updated weekly · Last refresh Oct 17

Idfc First Bank Software Engineer Interview Questions

The questions to prepare for a Idfc First Bank Software Engineer interview. Questions from real interview reports rank first. Updated daily.

50questions
~11htotal time
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1
SQL & Data ManipulationStart here. 12 questions · ~156 min
2
Coding12 questions · ~156 min
First 1 in Sorted Binary ArrayEasy
Practice

Find the first 1 in a sorted binary array using one left-to-right iteration and constant space.

binary searchArraysAlgorithmsIdfc First Bank
Special Binary String TransformationHard
Practice

Recursively reorder balanced special binary substrings to produce the lexicographically largest string.

coding challengeArraysAlgorithmsIdfc First Bank
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3
System Design12 questions · ~156 min
Low-Level Instagram DesignHard

Design Instagram's core low-level components and explain where ML ranking can fit into feed generation.

ML Rankingdistributed systemsdesignIdfc First Bank
Fargate vs ECS ReasoningHard

Explain why Fargate is selected as an ECS launch type, including operational, scaling, security, and cost tradeoffs.

cloud architecturecost constraintsarchitecture patternsIdfc First Bank
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4
Security & Infrastructure6 questions · ~78 min
Cloud, Infra, and Security BreadthHard
Recently asked

Explain hands-on Kubernetes, cloud, security, networking, hybrid infrastructure, containerization, and FinOps practices with verified controls.

cloud securitykubernetesNetworkingIdfc First Bank
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5
Technical Fundamentals4 questions · ~52 min
Spring Boot Custom ExceptionsMedium
Recently asked

Tests exception design, error modeling, and Spring Boot integration practices.

javaspring bootIdfc First Bank
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6
Behavioral & Leadership3 questions · ~39 min
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7
More topics1 question · ~13 min
E-Commerce Architecture and OrdersHard
Recently asked

Tests architecture decomposition, schema design, and correctness of order placement.

system architectureIdfc First Bank
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