I got the call from valu2tek for this requirement. I submitted my code for first coding round within 2 days. But these people just vanished & no response even after requesting for the feedback multiple times. Then after 50 days this recruiter from valu2tek calls me telling that positing was on hold & now it is open again, still I agreed to try for this. Still it took further 10 days to get the first interview scheduled & that was on basic Java & DataStructures. For next round again there was confusion regarding the time, so I also dropped this opportunity, as why to waste time for such people.