I applied through an employee referral. I interviewed at slice (Bengaluru) in Jun 2025
Interview
Interview Experience at Slice Bank – System Design + Coding (Notification System)
Role: Backend Developer (Java, Spring Boot)
Round: Low-Level Design + Implementation
Duration: Scheduled for 2 hours (Actual time given: ~1.5 hours)
Topic: Design and Implement a Notification System without Duplicate Notifications
The interview started with the task to design a complete notification system with the constraint that duplicate notifications must not be sent. It was framed as a low-level design (LLD) round, but gradually included high-level system behavior and implementation questions.
Interview questions [1]
Question 1
Design Notification system - LLD + coding with java spring boot , connecting to local database and testing on swaggers or postman
The first round was a coding assessment featuring a medium-level LeetCode problem. The challenge focused on subarrays and the modulo operation, requiring careful handling of array properties and mathematical computations.
Interview questions [1]
Question 1
The challenge focused on subarrays and the modulo operation, requiring careful handling of array properties and mathematical computations.
Round 1
1. Machine coding round, but here you have to make an end-to-end application using server and local DB. Plain Java or Python code doesn't work. You will have to test the code in the end using Postman.
Ques: - Build a simple wallet payment system
Round 2 - HLD round. Like any other HLD round asked generally.
Round 3 - Hiring manager
Interview questions [1]
Question 1
DSA not required, but coding and designing skill should be good.
