Communicated with HR based off European office for position in another European office. Was via employee referral and interviewed in a US office. The referral to interview took approx. 1 month and had behavioral interview via phone with a manager from European office (standard questions). Analytical interview with principal in US office. Case about a new cancer drug about to be released in market with LOADS of calculations. Non-traditional case interview since case material and calculation to be done provided as printed slides. Heard back the same day that was through to the second round but later offer was retracted citing strange language considerations, work permit reasons and even stranger was the fact that they offered a position to a non-European candidate recently and they did not want to offer another one now! They must have known all this before hand then why put me through this process at all?!? Strange and I did not enjoy this process.