Developer Intern Interview Questions

5,257 developer intern interview questions shared by candidates

Problem Description: Given a string s representing a basic mathematical expression with non-negative integers and operators (+, -, *, /), evaluate the expression following the standard operator precedence: Multiplication (*) and Division (/) have higher precedence than Addition (+) and Subtraction (-). Division is integer division (truncate towards zero). No parentheses are included. Example: Input: "3+7*7-9/3" Output: 49

Software Developer Intern

Interviewed at Overleap

3.6
Mar 25, 2025

Problem Description: Given a string s representing a basic mathematical expression with non-negative integers and operators (+, -, *, /), evaluate the expression following the standard operator precedence: Multiplication (*) and Division (/) have higher precedence than Addition (+) and Subtraction (-). Division is integer division (truncate towards zero). No parentheses are included. Example: Input: "3+7*7-9/3" Output: 49

Technical interview: * Find a bug in a client-server system in java, * In order to add some feature to the system, do research on the internet between 2 tools and decide which one will be better. * Design how you would add this feature and implement it. Team leader interview: * Design a tiny-url system, includes discussion of implementation details and required tests Group leader interview: * Few simple questions about race condition * Design a CRM (Customer Relationship Management) system
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Software Developer Intern

Interviewed at CyberArk

4.2
Mar 31, 2025

Technical interview: * Find a bug in a client-server system in java, * In order to add some feature to the system, do research on the internet between 2 tools and decide which one will be better. * Design how you would add this feature and implement it. Team leader interview: * Design a tiny-url system, includes discussion of implementation details and required tests Group leader interview: * Few simple questions about race condition * Design a CRM (Customer Relationship Management) system

They asked me two data structure problems — one was to implement a stack using queues and a queue using stacks, both focusing on object-oriented implementation. In the second technical round, they asked the 3-Sum problem, where I had to find all unique triplets in an array that sum up to target.

Backend Developer Intern

Interviewed at Astuto.ai

2.8
Apr 12, 2025

They asked me two data structure problems — one was to implement a stack using queues and a queue using stacks, both focusing on object-oriented implementation. In the second technical round, they asked the 3-Sum problem, where I had to find all unique triplets in an array that sum up to target.

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