Mongo DBA

MongoDB Performance Engineering

• Analyze and optimize slow queries and aggregation pipelines using explain plans, MongoDB Profiler, logs, and performance metrics.
• Design and optimize compound, partial, wildcard, TTL, text, and geospatial indexes.
• Apply Equality, Sort, Range (ESR) indexing principles.
• Identify and eliminate unused or redundant indexes.
• Tune MongoDB WiredTiger cache, eviction, checkpoints, compression, and journaling.
• Analyze read/write performance, latency, throughput, and resource utilization.
• Perform schema and data-model optimization for high-volume workloads.

Sharding & Cluster Operations

• Design and implement MongoDB sharding strategies and shard keys.
• Manage shard distribution, balancer operations, chunks, zones, and hot/jumbo chunks.
• Plan and execute resharding activities.
• Manage replication and high-availability configurations.
• Monitor and troubleshoot large-scale sharded clusters.