Roku Senior Software Engineer - Firmware interview questions

Contacted the recruiter at Roku through LinkedIn. Had two phone screens, one with the recruiter and the other with the hiring manager. They were looking for someone with a breadth of knowledge - right from low-level firmware, including assembly language to all the way up to application programming in C++. The position was for their new products group. The on-site interview went pretty well, by my judgement. I was able to answer 90% of all coding questions. The questions ranged from retreiving 12-bit data from a binary file, implementing a FIFO using an array, reversing a singly-linked list and bit manipulation. The only questions that I had trouble with were ones related to multi-threading. After the interview, I was also presented with a free Roku 3, which was a nice gesture on their part. The day following the interview, I got a call from the recruiter saying that they were passing on me because I didn't have enough experience in application level coding.