I applied through an online job board. The recruiter contacted me almost immediately. The manager contacted me within two days and scheduled a four-hour phone interview. There were three to four interviewers, and the interview was conducted via phone/Skype. They were mostly interested in my networking background and core programming skills, primarily focused around the role. They did have a tendency to ask questions about my answers repeatedly. They were not very interested in my learning capacity or personality. The interview was solely focused on technical aspects.

Revolved around:

• C/C++ programming concepts (dynamic memory allocation, data structures, inheritance, virtual functions, OOPs concepts)
• Operating Systems (semaphore, scheduling)
• Networking protocols, especially SIP, RTP, and TCP/IP
• Network analyzing tools
• Network/socket programming
• Protocol headers, etc.