Database Administrator

2 days ago

Bengaluru, Karnataka, India Zzazz Full time ₹ 15,00,000 - ₹ 25,00,000 per year

MongoDB / Postgresql

Key Responsibilities

  • Design, install, configure, and maintain MongoDB / Postgresql on-premises clusters (replica sets, sharded clusters).
  • Manage and optimize database performance, including query tuning, indexing strategies, and resource utilization.
  • Implement and maintain monitoring and alerting using Grafana, Prometheus, and MongoDB Exporter.
  • Configure backup and recovery mechanisms using mongodump, snapshots.
  • Handle replication lag, oplog sizing, and balancer optimization in sharded clusters.
  • Work closely with developers and DevOps teams to ensure database best practices in application design.
  • Perform root cause analysis for database performance and stability issues.
  • Implement security hardening, user management, role-based access, and TLS/SSL setup.
  • Contribute to capacity planning, scalability improvements, and high availability (HA) setups.

Required Skills & Experience

  • 4–8 years of hands-on experience with MongoDB/Postgresql administration (v4.x – v8.x).
  • Strong understanding of replication, sharding, journaling, and storage engines (WiredTiger).
  • Experience with Linux system administration (Ubuntu).
  • Proficient in monitoring MongoDB metrics via Grafana, Prometheus, MMS.
  • Knowledge of query profiling, explain plans, and performance analysis.
  • Familiarity with MongoDB backups, PITR, and disaster recovery.
  • Experience in scripting and automation using Bash or Python.
  • Good understanding of networking, security, and SSL/TLS configurations for database communication.
  • Experience with version upgrades, patching, and migrations Knowledge of connection pooling (PgBouncer/HAProxy) and load balancing for read replicas.
  • Proficiency in SQL, PL/pgSQL scripting, and Linux shell scripting.

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