Fidessa C++ Software Developer interview questions

DO NOT APPLY TO THIS COMPANY. THEY ARE SCAMMERS. I will justify my claim, so please let me tell you what happened. 4 rounds of interview, each one of them I aced out to receive rejection. They are not hiring but wasting people time. Applied through linkedIn, got hackerrank C++ code, done in 45 mins perfectly smooth. Then Video round, aced out, coding pair with 2 C++ question, aced them in 45 minutes in such a way that interviewer was more excited than me due to the elegance of it ( which I found later coz I couldnt beat my solution later even after trying hard). NOW THIS IS NOT DONE FIDESSA. This is fourth and final rounds as from them. 3 director / senior level guys, question was simple, explain one of the project experience. I am 6 years experiences candidate, 2 years of it as a leading senior developer startup experience with flagship development project in hand. As I started explaining, I didn't felt a glitch as the product was crafted by myself. Told them in and out , technically as well as business end. It was so fruitful, that I thought they didn't had a question left for me after 50mins of grill down. So, each one of them seems very happy and told me, will get back soon. Now I was extremely hopeful here, coz I know I aced it, I didn't even see a margin of error. Without presentation slides and previous preparation (as I was expecting technical question). I think it one of the best presentation verbally anyone could have given. After 3 days, b00m mail stating " we are moving forward with other candidate ". Are you kidding me ?. Are you serious ? Where was the reason of rejection ? Or you are just jerking around with candidates ? This is one of those wolf in tech industry which has to be defaced, so that candidates should be aware of it and not waste time on it. I am going through top tech org like Google / Amazon / Linked and yet I tried to manage time slot for this scammers. Now I know I shouldn't have and those guys who are reading this, Make sure you treat them like they will treat you when you have got time.

I got the interview through campus career fair, and got a online assignment, two questions, C++ only, then after two weeks, got a phone interview, hackerank coding, 3 questions, C++ only.