Senior Database Administrator (Oracle)

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

•  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.
•  Certifications such as Oracle Certified Professional (OCP) 19c, Oracle Cloud Infrastructure Architect Associate or AWS Certified Database — Specialty are an advantage.
•  Eligibility to work in Portugal.
•  Proven track record working for a Born-in-the-Cloud or Cloud-Native technology company — must have.

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.

•  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.

Please send your resume in English.