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) Perks 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.