Haystack
← Back to Jobs
Full time
Technology
OP

Database Administrator - Duxxel

OpenTalentSydney, Sydney🇦🇺AustraliaPosted 16 Sept 2026

Quick Overview

Seniority
Mid Senior
Employment type
Full Time
Work mode
Hybrid
Location
Sydney, Sydney, Australia
OracleSQLSQL ServerPostgreSQL

Job Description

We are seeking an experienced and highly skilled Database Administrator (DBA) to manage, optimize, and support mission-critical database environments across Oracle, Microsoft SQL Server, and PostgreSQL platforms.

The successful candidate will ensure database performance, availability, security, integrity, and scalability while supporting enterprise applications and business operations.This role requires deep technical expertise in database administration, performance tuning, backup and recovery, high availability, and database security. The DBA will work closely with application teams, infrastructure teams, architects, and business stakeholders to deliver robust and reliable database services.

Key ResponsibilitiesDatabase Administration & Operations
  • Administer, maintain, and support Oracle, SQL Server, and PostgreSQL databases across production, test, and development environments.
  • Perform database installation, configuration, upgrades, patching, migrations, and lifecycle management.
  • Proactively monitor database health, capacity, availability, and performance.
  • Ensure database services meet agreed service levels and operational requirements.
Performance & Optimization
  • Analyze and resolve database performance issues using platform-native diagnostics and monitoring tools.
  • Optimize SQL queries, stored procedures, indexing strategies, execution plans, and database configurations.
  • Conduct performance assessments and recommend improvements for scalability, resilience, and efficiency.
  • Implement tuning strategies for high-volume and business-critical enterprise workloads.
Backup, Recovery & High Availability
  • Design, implement, and manage backup, restore, recovery, and retention strategies.
  • Perform regular recovery testing and disaster recovery validation.
  • Manage high availability, clustering, and replication technologies, including Oracle Data Guard and RAC, SQL Server Always On Availability Groups and Failover Clustering, and PostgreSQL streaming replication and high availability solutions.
Database Design & Development Support
  • Collaborate with development teams on logical and physical database design, standards, and optimization.
  • Participate in application deployments, release activities, and production readiness reviews.
  • Review database changes and provide guidance on performance, supportability, and best practices.
  • Support CI/CD initiatives and database automation.
Documentation & Governance
  • Create and maintain database standards, operational procedures, and technical documentation.
  • Develop runbooks, recovery procedures, support models, and architecture documentation.
  • Participate in change management, incident management, problem management, and governance processes
Qualifications
  • 8+ years of database administration experience in enterprise environments.
  • Strong hands-on administration experience across Oracle, SQL Server, and PostgreSQL.

Similar jobs