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Zinier Interviews

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Zinier SDE1-Backend Interview Experience
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Zinier
SDE-1 Backend Developer1.4 years
June 19, 20253 reads

Summary

I interviewed for an SDE-1 Backend Developer role at Zinier. The round focused on Java, Spring Boot, design patterns, and a DSA problem, with a supportive interviewer.

Full Experience

Role: SDE-1 Backend Developer YOE: 1.4 years (Service-based company) College: Tier 1 Applied via: Referral

Round 1: Java + DSA (45min) The interviewer was supportive and gave hints where needed.

Introduction Started with a quick intro and background. Discussed past project experience and role responsibilities.

-Java & Backend Questions Spring Boot: What is the lifecycle of a request in a Spring Boot application? (Expected answer: explanatio including filters/interceptors if known.)

-Design Patterns:

Explain the Singleton pattern. Expectations: All common implementations including: Eager Initialization Lazy Initialization ...

-DSA Question Problem Statement: Given an integer array arr[], an integer k, and a threshold, return the number of subarrays of size k whose average is greater than or equal to threshold. Follow-up discussion on time complexity

Interview Questions (3)

Q1
Spring Boot Request Lifecycle
Other

What is the lifecycle of a request in a Spring Boot application? (Expected answer: explanatio including filters/interceptors if known.)

Q2
Explain Singleton Design Pattern
Other

Explain the Singleton pattern. Expectations: All common implementations including: Eager Initialization Lazy Initialization ...

Q3
Subarrays of Size K with Average Greater Than or Equal to Threshold
Data Structures & AlgorithmsMedium

Given an integer array arr[], an integer k, and a threshold, return the number of subarrays of size k whose average is greater than or equal to threshold. Follow-up discussion on time complexity

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