Senior Oracle DBA - Exadata Performance & Security Lead

Accenture; Lisboa; Hybrid; EUR 45,000 - 65,000; Full time

Job summary

Accenture is seeking an experienced Oracle database specialist to optimise performance on ExaCC platforms, focusing on compression, query tuning and indexing strategies to improve CPU efficiency and I/O performance.

The role requires 5–10 years of production Oracle experience, with strong SQL/PLSQL skills, RAC/Data Guard/RMAN, and a collaborative mindset to work with infrastructure and development teams across projects in Lisbon with a hybrid working model.

Qualifications

• 5–10 years of hands-on 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
• 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

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

Skills

Unix

SQL

Linux

PL/SQL

Oracle

RMAN

Education

University degree in Computer Science, Engineering or comparable technical field

Tools

Jenkins

UrbanCode Deploy

Qlik Replicate

Git/Bitbucket

ServiceNow

Jira

DBeaver

Job description

Accenture is seeking an experienced Oracle database specialist to optimise performance on ExaCC platforms, focusing on compression, query tuning and indexing strategies to improve CPU efficiency and I/O performance.

The role requires 5–10 years of production Oracle experience, with strong SQL/PLSQL skills, RAC/Data Guard/RMAN, and a collaborative mindset to work with infrastructure and development teams across projects in Lisbon with a hybrid working model.