First technical interview:

• Talked about the company and the positions.
• Discussed my experience and interests.

Second interview:

• Talked more deeply about my projects from school and my previous workplace.
• Got really deep into the details.

experience and interests.

Several simple questions like:

• What is a deadlock? (Describe an example)
• What is a singleton? (Implement it)
• What is an abstract class?

Then, several networking questions:

• Are you familiar with the OSI layers?
• What is the difference between an ACL and a firewall?
• What happens when you type a URL? (DNS explanation followed by HTTPS workflow)

Eventually, a simple coding question:

• Find the number of overlapping characters between two input strings.