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9,359 software engineer intern interview questions shared by candidates

First round: Behavioral: *Tell me about a project you worked on. *Are you familiar with our company? Technical: *Tell me about some concepts in object-oriented programming. *What is an abstract class and function(s)? *What is an interface? *What are virtual functions? *What is the static keyword in classes? How would you use it to implement a counter to track the total number of objects of a class instantiated? *You have a memory-mapped register with the 4 least significant bits controlling whether or not a specific relay is on or off (bits 0 to 3 respectively turning relays 0 to 3 on/off). Write me a function that takes the relay number and desired state (on or off) and turns that specific relay on or off. Write me a function that takes a relay number, reads the register, and returns if that relay is on or off. Second round: First interviewer: *What is a stack (both as a data structure and in the context of memory)? *How would you implement a stack using C#? *How does the garbage collector in C# work? Why would you want to set references to null? *Please describe and give UML models of a project you worked on (block diagram, state machines diagram, user-interaction diagram, activity diagrams, etc). Second interviewer: *How familiar are you with C#/C++? *Talk about previous experiences using both languages. *What is a deadlock in multi-threaded progamming? What is a mutex? *You have a base class which implements a bank account that has the ability to add funds, withdraw funds, and read account information including account ID, balance, and full name. If you withdraw and reach a negative balance, 20 dollars are further deducted from your account. A derived "gold account" class does not have this overdraw functionality. Please implement this using C#, C++, Python, or pseudocode. *Further bit-shifting embedded systems question. Nothing too different from first round. Manager: Mostly casual conversation. Positive experience. *What do you want to get out of this experience? *Tell me about your previous role. And talked about their various open projects to see which is of interest/best fit.
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Software Engineer Intern

Interviewed at Teradyne

4★
Jun 8, 2025

First round: Behavioral: *Tell me about a project you worked on. *Are you familiar with our company? Technical: *Tell me about some concepts in object-oriented programming. *What is an abstract class and function(s)? *What is an interface? *What are virtual functions? *What is the static keyword in classes? How would you use it to implement a counter to track the total number of objects of a class instantiated? *You have a memory-mapped register with the 4 least significant bits controlling whether or not a specific relay is on or off (bits 0 to 3 respectively turning relays 0 to 3 on/off). Write me a function that takes the relay number and desired state (on or off) and turns that specific relay on or off. Write me a function that takes a relay number, reads the register, and returns if that relay is on or off. Second round: First interviewer: *What is a stack (both as a data structure and in the context of memory)? *How would you implement a stack using C#? *How does the garbage collector in C# work? Why would you want to set references to null? *Please describe and give UML models of a project you worked on (block diagram, state machines diagram, user-interaction diagram, activity diagrams, etc). Second interviewer: *How familiar are you with C#/C++? *Talk about previous experiences using both languages. *What is a deadlock in multi-threaded progamming? What is a mutex? *You have a base class which implements a bank account that has the ability to add funds, withdraw funds, and read account information including account ID, balance, and full name. If you withdraw and reach a negative balance, 20 dollars are further deducted from your account. A derived "gold account" class does not have this overdraw functionality. Please implement this using C#, C++, Python, or pseudocode. *Further bit-shifting embedded systems question. Nothing too different from first round. Manager: Mostly casual conversation. Positive experience. *What do you want to get out of this experience? *Tell me about your previous role. And talked about their various open projects to see which is of interest/best fit.

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