Position: Senior MongoDB Database Administrator (MongoDB DBA)

Experience Required

6-8 Years

Job Summary

We are seeking an experienced MongoDB Database Administrator (DBA) to design, deploy, administer, secure, and optimize enterprise-scale MongoDB environments. The ideal candidate will have strong expertise in MongoDB Replica Sets, Sharded Clusters, Ops Manager, Backup & Restore, Security, Performance Tuning, and AWS migration.

The role requires hands-on experience with MongoDB cluster architecture, Linux administration, Python/Shell scripting, MongoDB security (X.509, TLS, SSL), high availability, and database migration in production environments.

Key Responsibilities

MongoDB Administration

• Design, install, configure, and administer MongoDB Replica Sets and Sharded Clusters.
• Deploy and manage highly available MongoDB environments on Linux.
• Configure and maintain MongoDB clusters for enterprise applications.
• Perform capacity planning, cluster expansion, and node management.

Cluster Management

• Configure Replica Sets and Sharded Clusters.
• Add and remove shard and replica nodes.
• Convert Replica Sets into Sharded Clusters to support growing data volumes.
• Manage Config Servers and Mongos routers.
• Ensure balanced shard distribution across clusters.

MongoDB Operations Manager (Ops Manager)

• Install and configure MongoDB Ops Manager.
• Onboard Replica Sets and Sharded Clusters into Ops Manager.
• Upgrade and maintain Ops Manager environments.
• Manage Projects, Groups, and monitoring dashboards.
• Configure alerts, monitoring, and operational reporting.

Backup, Restore & Automation

• Configure MongoDB Backup & Restore Services (BRS).
• Automate backup, restore, monitoring, and health-check processes.
• Develop automation scripts using Python and Shell scripting.
• Perform disaster recovery planning and testing.
• Ensure data availability and recovery readiness.

MongoDB Security

• Implement MongoDB authentication and authorization.
• Configure:
  • X.509 Authentication
  • TLS/SSL Encryption
  • Certificate Management
  • Role-Based Access Control (RBAC)
• Ensure compliance with enterprise security standards.
• Perform database auditing and security hardening.

Performance Tuning

• Monitor and optimize MongoDB performance.
• Analyze query execution plans.
• Optimize:
  • Indexes
  • Query performance
  • Memory utilization
  • Storage
  • CPU usage
• Implement text indexes, compound indexes, and efficient indexing strategies.

Sharding & Replication

• Configure:
  • Range-based Sharding
  • Hash-based Sharding
• Monitor replication lag and failover.
• Ensure even data distribution across shards.
• Troubleshoot replication and cluster performance issues.

Migration & Upgrades

• Upgrade MongoDB environments (e.g., 4.x to later versions).
• Migrate MongoDB clusters to AWS.
• Plan and execute production database migrations.
• Support zero or minimal downtime upgrades.

Monitoring & Troubleshooting

• Monitor cluster health and availability.
• Troubleshoot database performance, replication, and connectivity issues.
• Perform root cause analysis.
• Resolve production incidents and outages.

Documentation

• Maintain documentation for:
  • Cluster architecture
  • Backup procedures
  • Security standards
  • Operational runbooks
  • Upgrade procedures
• Document installation, monitoring, auditing, and disaster recovery processes.

Collaboration

• Work closely with Developers, Infrastructure Teams, DevOps Engineers, and Cloud Architects.
• Support production deployments and database releases.
• Participate in on-call support and incident response.
• Mentor junior DBAs and provide technical guidance.

Required Technical Skills

MongoDB

• MongoDB Replica Sets
• MongoDB Sharded Clusters
• MongoDB Cluster Administration
• MongoDB Ops Manager
• Backup & Restore Services (BRS)
• MongoDB Monitoring

Security

• X.509 Authentication
• TLS/SSL
• Authentication & Authorization
• RBAC
• Security Hardening
• Database Auditing

Performance

• Query Performance Tuning
• Query Plan Analysis
• Index Optimization
• Text Indexes
• Replication Optimization
• Change Streams

Database Administration

• Installation
• Configuration
• Migration
• Upgrades
• Backup & Recovery
• Disaster Recovery

Scripting

• Python
• Shell Scripting

Operating Systems

• Linux

Cloud

• AWS
• MongoDB Migration to AWS

Monitoring

• MongoDB Ops Manager
• Cluster Monitoring
• Performance Monitoring
• Health Checks

Required Qualifications

• Bachelor's degree in Computer Science, Information Technology, Engineering, or a related field.
• 6-8 years of experience as a MongoDB DBA or NoSQL Database Administrator.
• Strong hands-on experience with MongoDB Replica Sets and Sharded Clusters.
• Expertise in MongoDB Ops Manager and Backup & Restore Services.
• Experience implementing MongoDB security using X.509, TLS, and SSL.
• Strong Linux administration skills.
• Experience with Python and Shell scripting.
• Experience performing MongoDB upgrades and migrations.
• Excellent troubleshooting, analytical, and problem-solving skills.