MongoDB Database Administrator (Senior/Expert level)

Role Overview We are looking for a highly experienced MongoDB Database Administrator to own the design, performance, security, and reliability of our MongoDB estate. This role requires deep hands-on expertise across replica sets, sharded clusters, backup/restore, and performance tuning, with the judgment to make architectural decisions independently and troubleshoot production issues under pressure.

Key Responsibilities

• Administer, monitor, and maintain MongoDB environments across development, staging, and production
• Design and manage ReplicaSet and Sharded Cluster architectures for high availability and horizontal scalability
• Own backup and restore strategy and execution, ensuring recoverability meets business RPO/RTO requirements
• Plan and execute database patching, version upgrades, and migrations with minimal downtime
• Manage and optimize deployments using MongoDB Ops Manager
• Perform performance tuning, query optimization, and capacity planning across the MongoDB fleet
• Write and troubleshoot Mongo Query Language (MQL) for diagnostics and optimization
• Administer underlying Unix/Linux infrastructure supporting MongoDB workloads
• Work within Agile delivery teams, participating in sprints, planning, and incident retrospectives
• Support automation initiatives using tools such as Ansible, Jenkins, or Terraform
• Script routine operational tasks using Bash or Python
• Provide input and support on other database platforms as needed

Essential Requirements

• Excellent knowledge of MongoDB database administration
• Excellent knowledge of MongoDB architecture and internals
• Excellent knowledge of ReplicaSet cluster configuration and management
• Excellent knowledge of MongoDB Sharding
• Excellent knowledge of Ops Manager
• Excellent knowledge of MongoDB backup and restore mechanisms
• Excellent knowledge of database patching and upgrades
• Excellent knowledge of performance tuning
• Excellent knowledge of database migration
• Good knowledge of MongoDB Query Language (MQL)
• Good knowledge of Unix/Linux operating systems
• Good knowledge of Agile working practices

Desirable Requirements

• Good knowledge of modern automation technologies (Ansible, Jenkins, Terraform)
• Good knowledge of scripting (Bash, Python)
• Good knowledge of other database platforms