Database Administrator

ARM International; Dublin; Hybrid; EUR 61,000 - 87,000; Full time

Job summary

ARM International in Dublin 2 is seeking a seasoned DBA for an 18-month contract. The role: manage Oracle 19c and PostgreSQL databases on AWS (RDS/Aurora/EC2), ensure performance, security, and 24/7 availability, with on-call rotations.

You will join the Managed Services database team, own production stability, implement changes, and collaborate with DevOps, developers and cloud architects to deliver reliable database services across clients.

Qualifications

• 12+ years of DBA experience, with Oracle and PostgreSQL focus.
• Expertise in AWS cloud databases (RDS/Aurora/EC2).
• Strong performance tuning and security practices.

Responsibilities

• Own the stability, performance, and availability of production databases.
• Manage and support managed services databases for clients.
• Lead incident resolution and root-cause analysis, with cross-team collaboration.
• Implement changes and housekeeping tasks with defined SLAs.
• Participate in on-call rotation and occasional weekend deployments.

Skills

DBA experience

Oracle

PostgreSQL

AWS

Performance tuning

Tools

SQL Developer

PGAdmin

Shell scripting

PowerShell

GitHub

Terraform

Ansible

Job description

18-Month contract – up to €54 per hour – 40 hours a week

Dublin 2 based – 2 days a week onsite

Responsibilities: The Database team is responsible for managing and supporting our Managed Services clients. The role involves being a member of the database team within Managed Services which is responsible for maintaining managed services databases on the cloud (oracle 19c, Postgres 17) including:

• Management of all managed services environments (internal and client-facing)
• Provide support for any database related issues to all clients, particularly managed services clients
• Manage high severity incidents via SPGI process and work with all stakeholders to resolve issues as soon as possible including attending client bridge calls
• Ensure Database requests are dealt with within defined SLA’s
• Modelling and scripting database changes for all our products
• Ensure client releases are packaged and made available in a timely manner
• Be available for occasional on-call rotation or weekend deployments

Our cloud is hosted on AWS, and includes Amazon RDS, Amazon EC2, and Amazon Aurora. The role requires expertise in database performance tuning, security, cloud-based best practices, and ensuring continuous availability. The DBA will collaborate closely with developers, system administrators, and DevOps teams to ensure efficient database integration with business applications.

Production Stability and Reliability

• Own the stability, performance, and availability of all production database environments.
• Work on incident resolution, root cause analysis, and prevention strategies.
• Define and enforce database operational standards, guardrails, and best practices.
• Perform Change Management

Database Management & Maintenance

• Administer and maintain Oracle and PostgreSQL databases hosted on Amazon RDS, Amazon Aurora, and Amazon EC2.
• Perform database installations, patching, and upgrades on AWS infrastructure.
• Configure and manage multi-AZ deployments, Read Replicas, and cross region architectures
• Implement database partitioning, compression, and indexing to optimize performance.

Performance Engineering

• Conduct deep performance analysis at the system, query, and indexing levels.
• Recommend and implement architectural improvements for scalability.
• Guide application teams in schema and query optimization.

Backup & Recovery

• Design and implement automated backup strategies using AWS Backup and RDS Automated Snapshots for RDS oracle and Aurora Postgres
• Use Oracle RMAN for Oracle database backups and recovery.
• Develop and test disaster recovery plans.

Monitoring & Alerting

• Configure proactive alerts for performance issues, storage limits, and availability risks using CloudWatch, lambda and AWS SNS.
• Collaborate with developers, cloud architects, and DevOps teams to integrate database changes into CI/CD pipelines.
• document database architectures, configurations, backup strategies, and recovery plans.
• Drive automation of operational DBA tasks using PowerShell, Python, AWS CLI, GitHub Actions or similar tools.
• Evaluate and implement new database technologies, monitoring solutions, and optimization tools.

Tools & Technologies

• SQL Developer, PGAdmin
• Shell scripting, PowerShell, PL/SQL, PG/SQL
• GitHub, Terraform, Ansible,
• JIRA, Service Now, Confluence
• AWS native services including AWS Backup

What We're Looking For:

• 12+ years of experience as a DBA, with a strong emphasis on oracle, Postgres, AWS and performance tuning.
• Familiar with working in both development and production environments
• Willingness to work any shift and to perform additional hours as needed.
• Good interpersonal skills and ability to operate in a dynamic environment