I applied online in late July of 2014. Immediately I received an automated HR email thanking me for my interest. In January 2015 I received an email from an Native Instruments engineering manager with a problem in C++ to solve. I submitted my solution a couple days later. A few days after I submitted, the same person at Native Instruments mentioned I had a flaw in my code, and asked me what I would do to fix it. I fixed the code and emailed him the code and my explanation. I then never heard back from anyone at Native Instruments.