JD : • Experience in design, installation & configuration multi node MongoDB sharded cluster &replica sets on Linux Platforms. • Adding / removing replica and shard nodes in Mongodb Cluster as needed. • Good knowledge of a shard key and making sure of even distribution of data across multiple shards. • Converted replicaset to sharded cluster because of data size growth and better query rate planning. • Knowledge on Upgrade/migrations of repicaSet and Sharded cluster. • Deploying, migrating data, monitoring, analyzing, and tuning MongoDB. • In-depth knowledge of Ops Manager and Ops manager Upgrade. • Knowledge about Groups and Project in Ops Manager • Knowledge about Authentication and Authorisation and X509 authentication • Should have Configured SSL key files to implement security across all mongod instances. • Extensive knowledge of Mongo replication architecture and change stream. • Documenting MongoDB installation, operations, security, auditing multiple environments. • Should have knowledge about Query plan architecture and performance tuning at host and DB level. • Should have Knowledge of Range based sharding and Hash based sharding/ Indexing • Migration of Mongo cluster to AWS. • ReplicaSet/Shared Cluster build • Experience in upgrading Mongo clusters(ReplicaSet/Shared Cluster). • MongoDB scaling across data centers and an in-depth understanding of MongoDB HA strategies including replica sets and Shared Cluster. • Should have Worked on initial sync of replica set. • Should have Worked on Oplog Resize. • Read ticket and write ticket issues in MongoDB. • Worked on issue related to Slow Secondary Sync/Wired Tiger Cache Management. • Knowledge of Arbiter for High Availability. • Knowledge of High Oplog generation and tunning the Oplog size accordingly. • MongoDump and MongoRestore. • Read/Write concerns.