PhonePe prep

PhonePe Mid-level (3–5 years) Technical deep dive

#16

How do you manage secrets safely in CI/CD pipelines? — PhonePe interview

Reported in PhonePe interview loops. Security-focused DevOps interview question for pipeline hardening.

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PhonePe Mid-level (3–5 years) Technical deep dive

#17

Design a parking lot system using OOD principles — PhonePe interview

Reported in PhonePe interview loops. Object-oriented design classic testing modeling and extensibility.

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PhonePe Mid-level (3–5 years) Technical deep dive

#18

How do SOLID principles help in real-world codebases? — PhonePe interview

Reported in PhonePe interview loops. OOD theory-to-practice question for maintainability.

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PhonePe Mid-level (3–5 years) Behavioral

#19

Tell me about a project that failed or missed its deadline. What did you learn? — PhonePe interview

Reported in PhonePe interview loops. Behavioral question testing accountability, retrospectives, and growth.

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PhonePe Mid-level (3–5 years) Technical deep dive

#20

How do you version a public API without breaking clients? — PhonePe interview

Reported in PhonePe interview loops. API evolution question covering compatibility, deprecation, and communication.

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PhonePe Mid-level (3–5 years) Technical deep dive

#21

What is dependency injection and why is it useful? — PhonePe interview

Reported in PhonePe interview loops. Java/Spring staple connecting OOP design to testable service architecture.

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PhonePe Mid-level (3–5 years) Coding / DSA

#22

How do you perform topological sort on a directed acyclic graph? — PhonePe interview

Reported in PhonePe interview loops. Graph algorithm for task scheduling, build systems, and course prerequisites.

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PhonePe Mid-level (3–5 years) Coding / DSA

#23

How many distinct ways can you climb n stairs taking 1 or 2 steps at a time? — PhonePe interview

Reported in PhonePe interview loops. Introductory dynamic programming problem isomorphic to Fibonacci.

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PhonePe Mid-level (3–5 years) Coding / DSA

#24

Design and implement an LRU cache with O(1) get and put — PhonePe interview

Reported in PhonePe interview loops. Hash map plus doubly linked list problem bridging DSA and system components.

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PhonePe Mid-level (3–5 years) Coding / DSA

#25

Solve the 0/1 knapsack problem with dynamic programming — PhonePe interview

Reported in PhonePe interview loops. Classic DP testing tabulation, space optimization, and item selection reconstruction.

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PhonePe Mid-level (3–5 years) Coding / DSA

#26

Explain and implement Dijkstra's algorithm for shortest paths — PhonePe interview

Reported in PhonePe interview loops. Graph algorithm for non-negative edge weights using priority queue.

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PhonePe Mid-level (3–5 years) System design

#27

Design a URL shortening service — PhonePe interview

Reported in PhonePe interview loops. Foundational system design covering APIs, encoding, storage, and read-heavy scaling.

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PhonePe Mid-level (3–5 years) System design

#28

Design a distributed rate limiter for an API gateway — PhonePe interview

Reported in PhonePe interview loops. System design testing token bucket, sliding window, and Redis coordination.

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PhonePe Mid-level (3–5 years) Behavioral

#29

Tell me about a time you disagreed with a teammate. How did you handle it? — PhonePe interview

Reported in PhonePe interview loops. Behavioral STAR question assessing collaboration and conflict resolution.

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PhonePe Mid-level (3–5 years) Technical deep dive

#30

What principles do you follow when designing RESTful APIs? — PhonePe interview

Reported in PhonePe interview loops. API design question covering resources, HTTP semantics, and versioning.

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