Hello Aditya

As you got around 5000 rank in REAP, yes you can certainly get CSE or CSE related branches in JECRC in Reap first round.

The expected cutoff of CSE at JECRC is around 18,000 and you are well within that range so you can certainly get that.

Here's more info about REAP: REAP by CAREERS360

Hope this answer helps! Thank You!!!