Mathisys Quantcap interview questions

I applied through cold email to HR Round 1 : They asked to implement react feature on sandbox , whatever feature interviewer needs ( that can be done in 1 hour not more than that ) Round 2 : It was managerial round with Cheif Technical Officer , overview of company and what it do he explained and informed that next 3-4 rounds will be in gurgaon ( in office) . Round 3: It was offline technical round at gurgaon office. They asked me to explain solid principles , operating system concepts , dependency injection , Sql questions , react related questions like useref , recoil , redux , and more . Many questions were from resume that i mentioned , overall it was little bit tough as compared to other rounds Round 4: DSA round , medium level questions they asked to code and run infront of them Two more rounds were there but due to most of the employees were on leave so they had to decide on the basis of these rounds.