General Atomics Embedded Software Developer interview questions

first interview was a 1 on 1 interview with a senior software engineer. He asked questions ranging from OS, Networking, and C/C++. Second round of the interview was with 3 other engineers where I was asked to implement palindrome. They proceeded to ask questions regarding my implementation and edge cases. Next, they gave me a code snippet and asked me to explain what it does. Finally, they asked about OOP in C++ and to implement polymorphism. Both rounds were online interviews. I'm assuming there would eventually be an in person interview.

One phone screening, then a phone call with head of software engineering department talking about resume/background and job role/description, then 5 round panel interview with software engineering team talking about background and more into the roles of the job and what the team does.