Oracle DBA

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) • Company Car (level 9 and above); • 3000€ expenses (level 7 - Manager) • Annual bonus (level 9 - 5% / level 8 - 6% / level 7 - 23%) • +12 vacation days (compensation days) • Health insurance; • Life Insurance and Pension Plan Programs; • Free medical services at the office (Physician, Nutritionist, Psychologist); • Wellness programs; • Flexben Program (Support for Education, Kindergarden, Training, Technology, Health); • Employee Share Purchase Plan; • Personalized training paths and access to Udemy and Plurisight Plataforms; • Flex-ability program (financial and flexible support for people with disabilities); • Special banking conditions; • Hybrid working model.