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Entry-level Systems Engineer/Database Administrator - CCSI
Job in
Miami, Miami-Dade County, Florida, 33222, USA
Listed on 2026-09-07
Listing for:
Polluxa, Inc.
Full Time
position Listed on 2026-09-07
Job specializations:
-
IT/Tech
Disaster Recovery IT, Database Administrator, Unix/Linux
Job Description & How to Apply Below
Job Summary
We are seeking an entry-level and energetic Systems Engineer to administer PostgreSQL 18 in enterprise production environments. Will design, deploy and support highly available PostgreSQL clusters spanning multiple data centers or geographic locations, ensuring continuous availability, disaster recovery, and business continuity n us to empower our data-driven initiatives with innovative engineering and expert database administration!
Duties- Install, configure, upgrade, patch, and maintain PostgreSQL 18 clusters.
- Design, implement, and support highly available PostgreSQL architectures across multiple physical sites, regions, or data centers.
- Administer PostgreSQL clustering technologies such as Patroni, repmgr, or equivalent high-availability solutions.
- Configure synchronous and asynchronous streaming replication, logical replication, cascading replicas, and automatic failover.
- Monitor and maintain database health, replication lag, failover readiness, and cluster integrity.
- Perform zero or near-zero downtime PostgreSQL upgrades and maintenance.
- Optimize database performance through query tuning, indexing strategies, partitioning, and configuration optimization.
- Configure and tune autovacuum, WAL management, checkpoints, memory allocation, and connection management.
- Troubleshoot complex production database issues and perform root cause analysis.
- Develop database standards, operational procedures, and maintenance strategies.
- Design and maintain PostgreSQL clusters capable of surviving site-level failures.
- Implement geographically distributed disaster recovery solutions with defined Recovery Time Objectives (RTO) and Recovery Point Objectives (RPO).
- Manage automatic failover and failback procedures.
- Conduct regular disaster recovery testing and validation exercises.
- Design resilient architectures supporting 24x7 mission-critical applications.
- Ensure replication consistency and data integrity across multiple locations.
- Implement enterprise backup solutions using pgBackRest, WAL-G, Barman, or equivalent technologies.
- Configure continuous WAL archiving and Point-in-Time Recovery (PITR).
- Validate backups through regular recovery testing.
- Develop backup retention and archival policies.
- Administer Red Hat Enterprise Linux, Rocky Linux, Alma Linux, Ubuntu, or Debian systems.
- Tune Linux kernel parameters for PostgreSQL workloads.
- Configure system services using systemd.
- Monitor CPU, memory, storage, and network performance.
- Perform OS patching, security updates, and system hardening.
- Automate system administration using Bash, Python, or Ansible.
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