Database Administrator 3

Job Description
We are looking for senior-level database administrator with advanced expertise in both Oracle and PostgreSQL, along with a deep understanding of database architectures, security principles, and performance tuning methodologies. The candidate should also have strong problem-solving skills, attention to detail, and the ability to work under pressure while managing multiple complex database systems.
The candidate must also be willing to participate in a rotational 24x7 on-call Production Support.
1. Database Installation and Configuration

• Install, configure, and maintain Oracle Multi-Tenant Architecture and PostgreSQL database servers.
• Set up instances, database parameters, and schema objects.
• Perform upgrades and patch management to ensure databases are up-to-date with the latest features and security patches.
• Experience Red Hat Linux Operating Systems.

2. Database Architecture and Design

• Collaborate with development teams to design and implement efficient, scalable database solutions.
• Create database structures, including tables, views, indexes, and constraints.
• Define data storage, indexing strategies, and partitioning schemes for optimal performance.

3. Database Performance Monitoring and Tuning

• Monitor database performance and system resource utilization to ensure high availability.
• Identify bottlenecks, analyze slow queries, and tune databases for optimal performance.
• Utilize tools like Oracle AWR, PostgreSQL pg_stat_statements, and other performance analysis tools.
• Implement performance improvements such as indexing, query optimization, and caching mechanisms.

4. Backup and Recovery

• Implement and manage backup and disaster recovery strategies (e.g., RMAN for Oracle, pg_dump for PostgreSQL).
• Ensure data integrity and availability through regular backups and replication.
• Perform recovery tasks in the event of database corruption or failure.

5. Security Management

• Configure and maintain database security, ensuring appropriate user permissions and roles are in place.
• Encrypt sensitive data, ensure secure connections, and apply security best practices.
• Monitor for potential security threats and resolve vulnerabilities in both Oracle and PostgreSQL environments.

6. Capacity Planning and Scalability

• Analyze and forecast future database storage requirements.
• Plan for scalability, ensuring the databases can handle increasing workloads and data growth.
• Optimize database storage and processing capabilities, balancing performance with cost.

7. Data Migration and Integration

• Perform data migrations between Oracle, PostgreSQL, and other databases.
• Develop and manage ETL (Extract, Transform, Load) processes for data movement and transformation.
• Ensure data consistency and integrity during migration and integration efforts.

8. High Availability and Clustering
 Implement and manage high availability solutions such as Oracle Data Guard Replication, RAC and PostgreSQL streaming replication or clustering.
 Configure failover mechanisms to minimize downtime in case of hardware or software failure.
9. Database Troubleshooting and Issue Resolution

• Resolve database-related incidents such as connectivity issues, slow performance, and data corruption.
• Provide technical support to development and operations teams for database-related problems.
• Perform root cause analysis and implement preventive measures.

10. Automation and Scripting

• Automate routine database administration tasks using scripts (e.g., Bash, PowerShell, PL/SQL for Oracle, PL/pgSQL for PostgreSQL).
• Develop automation tools for monitoring, backups, and performance tuning.

11. Collaboration and Documentation

• Work closely with development, DevOps, and infrastructure teams to support application and system requirements.
• Document database configurations, processes, and procedures.
• Provide training and mentoring to junior DBAs or development teams on database best practices.

12. Compliance and Auditing

• Ensure databases comply with relevant regulatory standards (e.g., GDPR, SOX, HIPAA).
• Regularly audit database security, usage, and access logs.
• Manage and maintain database audit trails and security logs.

13. Innovation and Continuous Improvement

• Stay current with new database technologies, tools, and techniques.
• Propose and implement improvements to database systems, increasing efficiency, performance, and security.

Required Skills:

• Oracle
• Oracle 12c
• Oracle 8i/9i/10g
• Oracle Exadata
• PostgreSQL