2 Phone Screens Followed by a 5-Hour Onsite Discussion with Several People + Director

Phone Screen 1:

• Looked at my resume, asked basic questions.
• "How would you troubleshoot if a CSFB call fails?"
• "Test cases for Toaster."
• Seemed positive about my skillset.

Phone Screen 2:

• Call flow starting from mobile switch ON.
• "How would you troubleshoot MMS/Data throughput?"
• "What to look for in Wireshark logs?"

Received a schedule for the onsite interview a week later.

Onsite Interview:

Round 1:

• Explained overall LTE network architecture.
• Which entities are involved in a CSFB call?
• What elements are involved in a VoLTE/IMS call?
• Effect of latency on throughput.
• Basic troubleshooting cases.
• One interviewer started posing hypothetical situations, while another started laughing (should have been more professional).

Round 2:

• Developer asked about programming knowledge.
• "Have you developed any tools?"
• Knowledge of automation - tool usage.

Round 3:

• "How would you troubleshoot data?"
• Basic cellular questions.
• Interviewer seemed stressed and in a hurry.

Round 4 (Lunch Round):

• No proper time given to eat; questions were asked continuously.
• Call flow.
• Troubleshooting data/MMS, etc.
• Test/QA project management situations.
• Was informed that the workload is high, requiring extra hours and often weekend work.

Round 5:

• Interviewed by a different team under the same department.
• Seemed unprepared to conduct the interview, asking random, vague questions.
• Displayed an attitude, stating they work for Apple.

Round 6:

• LTE call flow.
• "How to test data - think of some quick test cases."
• The Director jumped in midway, in a hurry, focusing on education and experience working in the US.
• Later, the Director seemed confused if my skillset could fit another team instead of the one I was scheduled for onsite (lack of prior sync before reviewing resume).

Round 7:

A mix of the above rounds.

I answered most of the questions. A few days later, I received a rejection.