MongoDB Production server optimization and scaling

Job ID: 32125267

Budget: ₹2,500 – ₹0 INR

Need a consultant that can help us optimze the Mongodb Replica set of the production.
I'm running a 72 core cpu AWS EC2 server with dedicate 10000 IOPS.

My server is being used by 100% right now, and I can't comprehend what is the reason for this. the size of the db is also note more than 50 GB
Related categories: Amazon Web Services Node.js Elasticsearch MongoDB