Got a call from an ISG. They arranged an interview. It was a telephonic interview. The interviewer asked lots of average level questions. The interview was pretty easy if you have really worked on Java.
These people don't pay much but expect FANG level knowledge from the interviewee. Surprisingly I was able to clear many big company interviews, but still waiting for feedback from this crappy company. General advice, If you are a good developer Stay away from this company. Work culture is crappy and they don't have good benefits too.
As far as the interview experience, it was bad, really bad. They did not share any feedback. They ghost you after interviews.