"Senior software engineers are the most experienced member of a software team and usually carry the most responsibility and authority of that team. Because of this, interviews will be designed to find candidates who have expert knowledge of the field and years of experience as a software engineer. Expect to be asked tough technical questions and to give examples of previous projects that you have worked on."
Before submitting your resume, this company will force you to type in answers for 3 elementary programming questions, to prove that you are not a complete liar. The submit button is blocked until you type in something. The guilty until proven innocent mentality. Beware.
Can you provide details on the questions asked in online test?