Senior Database Administrator – Oracle (ExaCC / Exadata)

Qualifications:

• University degree in Computer Science, Engineering or comparable technical field.
• 5-10 years hands-on experience with Oracle databases in production.
• Proven expertise in performance tuning, compression, and resource optimization.
• Hands-on experience with ExaCC, ZFS, and ZDLRA is a strong plus.
• OS knowledge: Linux and/or Unix primary, Windows secondary.

Technical Skills:

• Oracle RAC, Data Guard, RMAN, Oracle Enterprise Manager (OEM); SQL and PL/SQL scripting mandatory.
• ExaCC CPU optimization, compression techniques, query tuning, Exadata awareness.
• Kerberos authentication and Oracle Client upgrades.
• Transparent Data Encryption (TDE), auditing, and compliance controls.
• Knowledge of Azure SQL, PostgreSQL, Azure Synapse, or DB2 is a plus.
• Tools: Oracle SQL Developer, Toad for Oracle; Jenkins, UrbanCode Deploy, Qlik Replicate, Git/Bitbucket, ServiceNow, Jira, DBeaver are pluses.
• Oracle Certified Professional (OCP) or equivalent certification is a plus.

Profile & Other Requirements:

• Professional English C1 (spoken and written) mandatory; French and/or Dutch a plus.
• Strong collaboration skills with infrastructure, development teams, and non-technical stakeholders.
• Structured problem-solving mindset; clear communication of technical findings.
• Generalizing-specialist profile open to multiple database technologies.
• Experience in regulated environments (e.g., financial services) is a strong plus.
• Must own valid work permit or EU/Schengen nationality to legally work in Portugal.
• Lisbon/Portugal based with hybrid working model in Parque das Nações.

• Optimize Oracle database performance through compression techniques, query tuning, and indexing strategy with focus on ExaCC CPU efficiency, storage cost reduction, and I/O efficiency.
• Fine-tune Oracle CPU allocation algorithms on ExaCC to maximize used/allocated ratio and minimize waste.
• Optimize backup and recovery processes for Oracle ZFS and ZDLRA appliances.
• Lead and support key projects, including migration to Kerberos authentication and Oracle Client upgrades.
• Guide development teams on database design, SQL coding, performance, and scalability best practices.
• Perform root cause analysis on performance incidents and complex database issues.
• Enforce access management, TDE encryption, auditing controls, and maintain audit-quality documentation.
• Contribute to multi-platform environments (Azure SQL, PostgreSQL, Synapse) where relevant.
• Collaborate with infrastructure partners, development teams, and project stakeholders across initiatives.

Must own a valid work permit or EU/Schengen Space nationality to legally work in Portugal. Lisbon/Portugal-based with a hybrid working model. Data controller is emagine located in Warsaw. Personal data processing is governed by recruitment purpose and applicable laws with rights to access, correction, deletion, limitation, objection, data portability, and complaint. Consent withdrawal is possible anytime.