Manage mission-critical Oracle and PostgreSQL databases across AWS RDS, Aurora, and EC2. Responsibilities include performance tuning, upgrades, patching, incident response, backup and recovery, replication, disaster recovery, monitoring, automation, database deployments, and collaboration with DevOps teams. The role includes occasional on-call rotations and weekend deployments.
Title: Senior Database Administrator (Oracle & PostgreSQL – AWS)
Location: Dublin, Ireland
Employment Type: Contract
Experience: 12+ Years
TechBlocks is looking for an experienced Senior Database Administrator (DBA) with strong expertise in Oracle, PostgreSQL, and AWS cloud services to manage and support mission-critical production databases.
Key Responsibilities- Manage and maintain Oracle 19c and PostgreSQL 17 databases on AWS RDS, Aurora, and EC2.
- Ensure database performance, availability, security, and reliability.
- Perform database installations, upgrades, patching, and performance tuning.
- Handle production incidents, root cause analysis (RCA), and troubleshooting.
- Implement backup, recovery, replication, and disaster recovery solutions.
- Monitor database performance using CloudWatch, Oracle OEM, and Foglight.
- Automate DBA tasks using Python, PowerShell, Terraform, and Ansible.
- Collaborate with DevOps and development teams on database deployments and CI/CD.
- Support occasional on-call rotations and weekend deployments.
- 12+ years of hands-on database administration experience.
- Strong expertise in Oracle 19c and PostgreSQL 17.
- Hands-on AWS experience with RDS, Aurora, and EC2.
- Advanced SQL performance tuning, indexing, and query optimization.
- Experience with Oracle RMAN, AWS Backup, and high-availability solutions.
- Strong production support, incident management, and RCA experience.
- Knowledge of scripting, automation, and DevOps tools.
- Excellent troubleshooting and communication skills.
- AWS or Oracle certifications.
- Experience supporting enterprise Managed Services environments.
- Knowledge of GitHub Actions, CI/CD, and database automation.
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