IBM Software Developer interview questions

I applied online for which I got an email from recruiter saying that I need to complete a aptitude test online. And after that it was followed by series of 2 interviews. First was on call and second on site. Both were 1:1 interviews but with different people. One of them was team manager and other one was his colleague.

Phone Interview, set a time through e-mail, get a phone call to talk about previous work, skills set you got, why, and ask about your most liked program language, basic coding questions And lastly some algorithmic questions, optimize solution and etc.