I applied online and had a phone interview scheduled within one week.

I spoke with the hiring manager for a half hour or so. She wanted to see whether or not my resume was accurate and mostly asked questions about prior projects, languages I knew, and how I go about solving a problem.

After one week, I heard back from my recruiter who wanted to bring me on-site for an interview. I had five interviews with four people, and it took 3-4 hours. I was asked about many things, including behavioral questions, past projects, and classes I was taking. Some interviewers went through my resume and asked me about the things on it. They would drill deeper to see if I really had a good understanding of CS concepts.

Basic software engineering experience and knowledge of software design practices are important. Knowing multiple languages helps.

Good problem-solving skills are critical for interviewing at F5. It's okay if you don't know something, but you need to demonstrate you could solve a problem you know nothing about.

Overall, the interview process was good, and the people were quite friendly and supportive. I got a tour of the facility and met many of the people I would later end up working with. There were no trick questions or really difficult problems. I don't think I was asked a single question I didn't know the answer to. If you're a good fit for the job, you shouldn't have problems here.

I didn't get any tricky technical questions, but I was surprised when I was asked for my favorite data structure.