Sr. MongoDB Administrator

Total-TECH Co.

” The Job Description”

  1. Install, configure, and manage MongoDB clusters (standalone, replica sets, and sharded clusters) in production and non-production environments.
  2. Perform routine maintenance such as patching, upgrades, and configurations to ensure stability, security, and performance.
  3. Develop, implement, and maintain comprehensive backup and recovery strategies using native MongoDB tools or third-party solutions.
  4. Plan and test disaster recovery solutions to minimize downtime and ensure data integrity in case of failures.
  5. Continuously monitor MongoDB performance using tools like MongoDB Ops Manager, Prometheus, and Grafana.
  6. Analyze slow queries and perform query optimization by creating and tuning indexes, adjusting database parameters, and modifying schemas when necessary.
  7. Manage database scaling, optimizing memory and disk usage to handle increasing data volumes.
  8. Ensure database security by configuring authentication mechanisms (e.g., role-based access control, LDAP integration).
  9. Implement encryption (SSL/TLS) for data in transit and at rest, as well as regular audits of user access.
  10. Stay updated on the latest security vulnerabilities and apply patches to MongoDB environments.
  11. Design and implement highly available MongoDB systems, including replica sets, sharded clusters, and geographic distribution of data.
  12. Plan and execute scaling strategies to accommodate growth in data size and query volume, both vertically and horizontally.
  13. Automate routine database tasks, such as backups, monitoring, and failover, using scripting tools (e.g., Bash, Python) and configuration management tools (e.g., Ansible, Puppet).
  14. Collaborate with developers to design optimized schema models, whether denormalized (for high-speed read operations) or normalized (for structured query integrity).
  15. Provide guidance on MongoDB best practices, including decisions on embedded vs. referenced document design and optimal index usage.
  16. Configure monitoring and alerting systems to track key metrics like query performance, database health, disk space, and replication status.
  17. Respond to system alerts promptly and ensure minimal downtime by diagnosing and resolving issues.
  18. Work closely with development and DevOps teams to troubleshoot database-related issues and support application development, including participating in design and architecture reviews.
  19. Provide database-related advice during application performance reviews to ensure MongoDB best practices are followed.
  20. Maintain detailed documentation of all MongoDB-related processes, configurations, and best practices.
  21. Create runbooks and operational guides for the development and operations teams to follow when interacting with the MongoDB environment.

    Requirements:

  • Extensive hands-on experience managing MongoDB clusters, including replica sets and sharded clusters.
  • In-depth knowledge of MongoDB internals, including storage engines (WiredTiger, In-Memory), journaling, write concern, and replication mechanisms.
  • Proven experience with MongoDB performance tuning, including query optimization, index strategies, memory management, and disk I/O optimization.
  • Strong understanding of backup and disaster recovery strategies, using both native MongoDB tools and third-party solutions (e.g., Ops Manager, Percona Backup for MongoDB).
  • Proficiency in automation scripting using Bash, Python, or PowerShell, as well as experience with configuration management tools like Ansible or Puppet.
  • Familiarity with MongoDB monitoring tools such as MongoDB Ops Manager, Prometheus, Grafana, or other database monitoring solutions.
  • Knowledge of MongoDB security mechanisms, including role-based access control (RBAC), auditing, encryption (SSL/TLS), and network security.
  • Strong knowledge of Linux operating systems, including system administration tasks (e.g., storage management, networking) to support MongoDB environments.
  • Hands-on experience managing MongoDB in cloud environments (AWS, Azure, GCP), including using managed MongoDB services (MongoDB Atlas, DocumentDB).
  • Experience working with containerized MongoDB instances (e.g., Docker, Kubernetes).
  • Bachelor’s degree in Computer Science, Information Technology, or a related field.
  • Minimum 5+ years of experience as a MongoDB Database Administrator, with experience in managing large-scale enterprise MongoDB environments.
  • Proven track record of managing and optimizing MongoDB for performance, scalability, and security.

Preferred Skills:

  • Experience with other NoSQL databases.
  • Experience with data migration and synchronization tools for MongoDB.
  • Experience in multi-datacenter, cross-regional replication, and geo-sharding.
  • MongoDB Certified DBA or other relevant certifications.

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