FlexTrade Systems Inc. Technical Analyst interview questions

I got a call from a consultancy and my interview was scheduled at FlexTrade in Nov 2019. 1. Online test consisting of 20-30 questions based on aptitude, logical reasoning, some unix questions(scenario based), a code or two (based on file I/O,strings). 2. In Technical Interview they ask some codes (easy) to write mostly pattern based, string based, unix questions, what work you've done in your current project and some common questions. 3. Managerial round will ask you about your salary expectations and other non technical questions. The role does not have much to do with coding. The work will be mostly configuration level. Flow testing, Client management.

It took about 3 hours in their swanky offices in London, it was almost worth being rejected just to see the view! It consisted of usual interview questions followed by a few brainteasers (this is where I messed up)