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