First step was an initial phonecall with HR rep, followed by a language screen with an associate two days later.
Then invitation to GLG's Dublin office for a face to face interview. The interview process took about three hours with four different interviewers. Generally good atmosphere, the interviewers were a pleasure to talk with.
After the interview it took HR more than one month and several Emails and phone calls on my part to give me a final update on my status, which I found to be quite unprofessional.
Unfortunately the application was unsuccessful in the end, however the interviewing process was quite pleasant, except for HR's post-interview behaviour.