Senior Database Administrator – Oracle (ExaCC / Exadata)

emagine; Lisboa; Híbrido; EUR 60 000 - 90 000; Tempo integral

Resumo da oferta

emagine is seeking a senior Oracle DBA to optimize performance across ExaCC Exadata, ZFS, and ZDLRA environments. You will partner with infrastructure teams and developers to deliver improvements and cost efficiencies.

The role focuses on specialist expertise, continuous improvement, and collaboration across multi-platform environments including Azure SQL and PostgreSQL where relevant. Hybrid Lisbon-based work is available.

Qualificações

• University degree in Computer Science, Engineering or comparable technical field.
• 5–10 years of hands-on Oracle database experience in production environments.
• Proven expertise in performance tuning, compression and resource optimization.
• Hands-on experience with ExaCC, ZFS and ZDLRA is a strong plus.

Responsabilidades

• Optimize Oracle DB performance using compression, query tuning and indexing strategies.
• Fine-tune ExaCC CPU allocation to maximize used/allocated ratio.
• Optimize backup/recovery for ZFS and ZDLRA and ensure cost-effectiveness.
• Lead projects like Kerberos migration and Oracle client upgrades.
• Guide development teams on database design, SQL coding, performance and scalability.
• Perform root-cause analysis on performance incidents escalated from infra partners.
• Audit, access management, and encryption controls; ensure audit quality.

Conhecimentos

Performance tuning

ExaCC/Exadata

SQL/PLSQL

Kerberos authentication

TDE/audit controls

Cross-team collaboration

Formação académica

University degree in Computer Science/Engineering

Ferramentas

Oracle SQL Developer

Toad for Oracle

Jenkins

UrbanCode Deploy

Qlik Replicate

Git/Bitbucket

ServiceNow

Jira

DBeaver

Descrição da oferta de emprego

We are searching for candidates for a senior Oracle DBA role focused on performance optimization, resource efficiency and project delivery across Oracle ExaCC (Exadata Cloud@Customer), ZFS and ZDLRA environments. Day-to-day operational coverage is handled in partnership with infrastructure teams; this role focuses on specialist expertise, continuous improvement and cross-team collaboration with development and infrastructure stakeholders.

What You'll Do

• Optimize 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 maximize the used/allocated ratio and minimize waste;
• Optimize 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.

Qualifications

What You'll Need

• 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 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 (must);
• ExaCC CPU optimization, compression techniques, query tuning, Exadata awareness;
• Kerberos authentication and Oracle Client upgrades;
• Transparent Data Encryption (TDE), auditing & compliance controls;
• Azure SQL or PostgreSQL, Azure Synapse or DB2 — knowledge is a plus;
• Tools: Oracle SQL Developer, Toad for Oracle,
• Following Tools are a plus: Jenkins, UrbanCode Deploy, Qlik Replicate, Git/Bitbucket, ServiceNow, Jira, DBeaver;
• Oracle Certified Professional (OCP) or equivalent certification is a plus.

Profile & Other Requirements

• Professional English C1 (spoken and written) — mandatory; French and/or Dutch is a plus;
• 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;
• Experience in regulated environments (e.g., financial services) is a strong plus;
• Must own a valid work permit or EU/Schengen Space nationality to legally work in Portugal;
• Lisbon/Portugal-based — hybrid working model in Parque das Nações.