The first step was a multiple choice questionnaire (not timed): Questions regarding C programming, data types, and some basic algorithms. The second step was a coding test: Implement a K-means clustering algorithm in C and submit the source code. The algorithm was already described, but the test was to take data input from a file, cluster it and output another file with the corresponding cluster assignment for each data point in the input file The third step was a face to face interview: Talk about previous experience and some technical and logical questions.

The interview process started with a simple question sheet that included some basic programming questions. Then there was a full programming test which required me to write a piece of software in C that demonstrated a slightly modified K-means algorithm. With these two tests completed I was then given a phone interview to ensure I was a good fit for the company. Finally I attended a face to face interview with 3 interviewers.