Senior Database Administrator – Oracle (ExaCC / Exadata)

# Think Data Be Smart #

About Us: DataSmart is a Portuguese company, positioning itself as a consulting company of excellence, with over 20 years of existence. We are specialized in Technologies and Information Systems services, for the Portuguese and International markets. We pride ourselves on fostering a culture of involvement, experience, and excellence.

Join our team as a Senior Database Administrator – Oracle (ExaCC / Exadata) (Hybrid – Lisbon)!

What You’ll Do:

• Optimize Oracle database performance across ExaCC, ZFS and ZDLRA environments.
• Perform query tuning, indexing and compression optimization to improve CPU, storage and I/O efficiency.
• Fine-tune ExaCC CPU allocation to maximize resource utilization and minimize capacity waste.
• Optimize backup and recovery processes across Oracle ZFS and ZDLRA appliances.
• Lead and support key technical projects, including:
  • Kerberos authentication migration
  • Oracle Client upgrades
• Advise development teams on database design, SQL coding, performance and scalability best practices.
• Investigate complex performance incidents and perform root cause analysis (RCA) on issues escalated by infrastructure teams.
• Manage and enforce access controls, TDE encryption, auditing and compliance requirements.
• Maintain audit-quality technical documentation.
• Contribute to multi-platform database environments, including Azure SQL, PostgreSQL and Synapse.
• Collaborate closely with infrastructure teams, developers and project stakeholders across different initiatives.
• Drive continuous improvement and resource efficiency across database operations.

Qualifications:

• • Oracle RAC.
  • Oracle Data Guard.
  • RMAN.
  • Oracle Enterprise Manager (OEM).
  • Strong SQL and PL/SQL scripting — mandatory.
  • Exadata/ExaCC awareness and CPU optimization.
  • Query tuning and indexing strategies.
  • Oracle compression techniques.
  • Kerberos authentication.
  • 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
  • • University degree in Computer Science, Engineering or a comparable technical field.
    • 5–10 years of hands-on Oracle DBA experience in production environments.
    • Strong expertise in:
      • Oracle performance tuning
      • Compression
      • Resource optimization
    • Hands-on experience with ExaCC, ZFS and ZDLRA is a strong plus.
    • Strong Linux and/or Unix knowledge; Windows knowledge is a plus.
    • Experience in regulated environments, particularly financial services, is a strong plus.Oracle Certified Professional (OCP) or equivalent certification is a plus.
  • English C1 — mandatory, spoken and written.
  • French and/or Dutch is a plus.
  • Strong collaboration and stakeholder management skills.
  • Ability to work effectively with infrastructure partners, development teams and non-technical stakeholders.
  • Structured problem-solving and analytical mindset.
  • Ability to clearly communicate technical findings and performance recommendations.
  • Generalizing-specialist profile, comfortable working across multiple database technologies.
  • Valid work permit or EU/Schengen nationality allowing legal employment in Portugal.
  • Lisbon/Portugal-based, with a hybrid working model.

At DataSmart, you will have the opportunity to integrate into a solid company and participate in projects of high recognition, nationally and internationally, with an appealing technological environment and career progression.

Excellence in the way to the future!

Connect with Us: Follow us on LinkedIn for updates on career opportunities, company news, and industry insights! For further details, visit us at www.datasmart.pt

#JoinOurTeam #DataSmart #ThinkDataBeSmart #oracle #exadata