Database Administrator (EDB/Postgresql)

Ensure the availability, performance, integrity, and security of the organization's PostgreSQL and EDB Postgres database systems, including high-availability clusters, backup/recovery infrastructure, and scheduled maintenance operations.

Job Responsible:

Installation & configuration

• Install, configure, and upgrade PostgreSQL and EDB Postgres servers across development, staging, and production environments.
• Set up database instances, roles, permissions, and connection settings.
• Configure and maintain connection pooling using Pgpool-II or PgBouncer, based on workload and architecture needs.
• Design, deploy, and manage high-availability clusters using EDB Postgres Failover Manager (EFM).
• Operate multi-node clusters with automated failover, load balancing, and query routing; validate failover readiness.
• Configure and manage streaming and logical replication.
• Monitor replication lag and maintain standby servers.

Performance tuning & optimization

• Tune queries, indexes, and server configuration parameters (memory, checkpoints, WAL, autovacuum settings).
• Analyze query plans (EXPLAIN/ANALYZE) to identify and resolve bottlenecks, locking, and slow queries.
• Perform capacity planning and manage growth of the database estate.
• Configure and tune autovacuum (thresholds, scale factors, cost limits, per-table overrides) to control table and index bloat.
• Run manual VACUUM ANALYZE and VACUUM FULL based on need, managing the trade-off between space reclamation and locking impact.
• Monitor dead tuples, transaction ID wraparound, and bloat, and act proactively to prevent performance degradation.
• Design and implement table partitioning (range, list, hash) for large tables to improve performance and manageability.
• Manage partition lifecycle — creating, attaching, detaching, and pruning partitions.
• Optimize queries to benefit from partition pruning and maintain partitioned indexes.

Scheduled / off-hours maintenance

• Plan and execute maintenance during night or low-traffic windows to minimize impact on production.
• Perform data slimming — archiving, purging, or trimming obsolete data to control database size.
• Run VACUUM ANALYZE or VACUUM FULL as required based on bloat and workload conditions.
• Schedule reindexing and other heavy maintenance within approved windows.
• Monitor index health and bloat, and perform reindexing (including REINDEX CONCURRENTLY) to restore performance.
• Schedule reindexing to minimize impact on production workloads.

Backup & recovery (pgBackRest)

• Design and manage backup strategies using pgBackRest — full, differential, and incremental backups.
• Configure and maintain pgBackRest repositories (local and/or remote/offsite), retention policies, and WAL archiving.
• Perform and regularly test point-in-time recovery (PITR) and restore procedures.

Security & compliance

• Manage user access, roles, and privileges following least-privilege principles.
• Apply security patches and enforce data protection and compliance requirements.
• Audit database activity as required.

Monitoring & incident response

• Set up monitoring and alerting for availability, performance, replication, vacuum/bloat, and backup status.
• Respond to incidents and perform root-cause analysis.

Collaboration

• Work with developers to review schema design, queries, and data models.
• Support application and infrastructure teams with database deployments and issues.
• Document configurations, cluster architecture, backup/recovery procedures, and maintenance standards.

Job Requirement:

• Proven experience administering PostgreSQL and EDB Postgres in production.
• Strong SQL and knowledge of database internals (query planning, indexing, MVCC, vacuum mechanics).
• Hands-on experience with table partitioning, reindexing, and autovacuum tuning at scale.
• Experience with connection pooling using Pgpool-II and/or PgBouncer.
• Experience with EDB Postgres Failover Manager (EFM) and high-availability clusters.
• Experience configuring and managing pgBackRest backup repositories and PITR.
• Experience with streaming/logical replication and high availability.
• Familiarity with Linux/Unix administration and shell scripting.
• Willingness to perform scheduled maintenance during off-hours/night windows.
• Understanding of monitoring tools and database security practices.
• Relevant degree or equivalent experience; PostgreSQL/EDB certification a plus.