MongoDB DBA: Architecture, Performance & Scale

Merquri; Singapore; On-site; SGD 70,000 - 120,000; Full time

Job summary

Merquri is seeking a MongoDB Database Administrator to own and strengthen our mission-critical MongoDB environment. You will drive architecture, performance, scalability and reliability, with exposure to Oracle and PostgreSQL in a cloud-forward production landscape.

You will design replica sets and sharded clusters for high availability, optimise queries and indexes, and manage both Atlas and self-managed deployments across AWS, GCP or Azure.

Qualifications

• 2-5 years of hands-on MongoDB administration in production.
• Experience with Replica Sets, Sharding and Cluster Management.
• Strong knowledge of WiredTiger storage engine, indexing and profiling tools.
• Experience in Linux/Unix performance tuning and troubleshooting.
• Experience managing workloads on AWS, GCP or Azure.
• Good command of English; Mandarin would be an advantage for regional collaboration.
• Bachelor’s degree in Computer Science, Information Systems or related discipline, or equivalent practical experience.

Responsibilities

• Manage the complete MongoDB lifecycle: architecture, deployment, upgrades, maintenance and security hardening.
• Design and manage Replica Sets and Sharded Clusters for high availability and horizontal scaling.
• Monitor production databases and resolve performance issues, including locking and replication lag.
• Optimise queries, aggregations and indexing in collaboration with development teams.
• Manage MongoDB Atlas and self-managed workloads across AWS, GCP or Azure.
• Develop and maintain backup, recovery, point-in-time restore and failover procedures.
• Automate routine DBA activities and health checks.
• Participate in rotational on-call for production support.

Skills

MongoDB administration

Replica Sets

Sharding

WiredTiger

Linux/Unix

Cloud platforms AWS/GCP/Azure

English proficiency

Education

Bachelor’s degree in Computer Science or related

Tools

MongoDB Atlas

MongoDB Ops Manager

Prometheus/Grafana

Job description

Merquri is seeking a MongoDB Database Administrator to own and strengthen our mission-critical MongoDB environment. You will drive architecture, performance, scalability and reliability, with exposure to Oracle and PostgreSQL in a cloud-forward production landscape.

You will design replica sets and sharded clusters for high availability, optimise queries and indexes, and manage both Atlas and self-managed deployments across AWS, GCP or Azure.