Company #undefined
Oracle DBA
Visa Source Listed
📍 Lisbon, Portugal📅21h ago
azurejenkinspostgresql
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Job Description
Role description and responsibilities
- Optimise Oracle database performance through compression techniques, query tuning and indexing strategy — with a focus on ExaCC CPU efficiency, storage cost reduction and I/O efficiency
- Fine-tune Oracle CPU allocation algorithms on ExaCC to maximise the used/allocated ratio and minimise waste
- Optimise backup and recovery processes for Oracle ZFS and ZDLRA appliances, ensuring reliability and cost-effectiveness
- Lead and support key projects, including migration to Kerberos authentication and Oracle Client upgrades
- Guide development teams on best practices for database design, SQL coding, performance and scalability
- Perform root cause analysis on performance incidents and complex database issues escalated from infrastructure partners
- Enforce access management, TDE encryption, auditing controls and 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
Requirements
- University degree in Computer Science, Engineering or comparable technical field
- 5–10 years of hands-on experience with Oracle databases in production environments
- Proven expertise in performance tuning, compression and resource optimisation
- OS knowledge: Linux and/or Unix (primary), Windows (secondary)
- Oracle RAC, Data Guard, RMAN, Oracle Enterprise Manager (OEM)
- SQL and PL/SQL scripting (mandatory)
- ExaCC CPU optimisation, compression techniques, query tuning, Exadata awareness
- Kerberos authentication and Oracle Client upgrades
- Transparent Data Encryption (TDE), auditing & compliance controls
- Professional English C1 (spoken and written) — mandatory
- Strong collaboration skills — comfortable working with infrastructure partners, development teams and non-technical stakeholders
- Structured problem-solving mindset; ability to communicate technical findings clearly
- Generalizing-specialist profile — open to working across multiple database technologies
- Must own a valid work permit or EU/Schengen Space nationality to legally work in Portugal
- Lisbon/Portugal-based — hybrid working model
Nice to have
- Hands-on experience with ExaCC, ZFS and ZDLRA
- Azure SQL or PostgreSQL, Azure Synapse or DB2 knowledge
- Tools: Jenkins, UrbanCode Deploy, Qlik Replicate, Git/Bitbucket, ServiceNow, Jira, DBeaver
- Oracle Certified Professional (OCP) or equivalent certification
- French and/or Dutch language skills
- Experience in regulated environments (e.g., financial services)