Senior Database Administrator (Oracle)

On-sitePortugal

Portugal

PostgreSQLAWS

About the opportunity

We are looking for a senior Oracle DBA to join our Global Cloud DBA team in Portugal. You will own the day-to-day operation, availability and performance of Oracle estates hosted on AWS (RDS and EC2) and Oracle Cloud Infrastructure (OCI) for GDPR, EMEA and US customers, working a fixed shift aligned to EMEA business hours with rotational on-call responsibility for critical incidents outside those hours. You will also build working capability on MSSQL, PostgreSQL and MySQL as secondary platforms to widen cross-platform coverage.

Location: Portugal, Lisbon

Minimum requirements

6–10 years of hands-on database administration experience, with a majority on Oracle Database in production environments.

Demonstrable experience supporting enterprise or managed-services customers under formal SLAs.

Bachelor's degree in Computer Science, Information Technology or equivalent practical experience.

Eligibility to work in Portugal.

Professional skills

Strong written and spoken English; able to communicate directly with customer stakeholders.

Structured troubleshooting under production pressure, with clear escalation and hand-over discipline across shifts.

Ownership mindset — validating changes before they reach production and owning the rollback path.

Willingness to cross-skill into the secondary database platforms; the team actively runs MSSQL ↔ Oracle cross-training to widen coverage across the on-call rotation.

Documentation habit — runbooks, knowledge-base articles and post-incident notes.

Certifications such as Oracle Certified Professional (OCP) 19c, Oracle Cloud Infrastructure Architect Associate or AWS Certified Database — Specialty are an advantage.

24×7 production support for Oracle estates across EMEA, GDPR and US customers — incident response, root-cause analysis and SLA-bound resolution of P1/P2 issues.

Execution and validation of customer scripts and datafixes against production and pre-production databases, including impact assessment, backup/snapshot before execution and ownership of the rollback path.

Backup, restore and recovery operations; periodic recovery testing and RTO/RPO validation.

Database refresh, clone and copy activities across environments, including masked refreshes for non-production.

High availability and disaster recovery: configuration, monitoring, failover testing and recovery.

Performance monitoring and tuning — query and index optimisation, blocking and contention analysis, capacity and growth management.

Planned change delivery: pre-implementation backups, implementation, post-implementation and post-patching validation within agreed maintenance windows.

Access and permission management, user provisioning and privilege reviews.

Patching, upgrades and migrations, including cloud migrations and version upgrades.

Automation of routine operational tasks and contribution to self-healing and monitoring improvements.

Proactive analysis of recurring incidents to identify and eliminate root causes rather than repeatedly remediating them.

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Senior Database Administrator (Oracle)

About the opportunity

Minimum requirements

Professional skills

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