Database Administrator – Oracle (ExaCC / Exadata)

Accenture Portugal; Lisboa; Hybrid; EUR 90,000 - 130,000; Full time

Benefits offered by this job

Health insurance

Life Insurance and Pension Plan

Wellness programs

Flexben Program

Employee Share Purchase Plan

Hybrid working model

Job summary

Accenture Digital Core in Lisbon seeks a senior Oracle DBA to optimise database performance and lead improvements across ExaCC, ZFS, and ZDLRA environments. You will partner with infrastructure and development teams to deliver reliable, secure data solutions and support Kerberos migrations and client upgrades.

The role requires 5–10 years of production Oracle DB experience, strong tuning skills, and Linux/Unix expertise; English is mandatory with a hybrid Lisbon work model.

Qualifications

• 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.
• Hands-on experience with ExaCC, ZFS and ZDLRA is a strong plus.
• OS knowledge: Linux and/or Unix (primary), Windows (secondary).

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.
• Collaborate with infrastructure partners, development teams and project stakeholders across initiatives.

Skills

Oracle DBA

Performance tuning

ExaCC

ZFS

ZDLRA

Linux/Unix

Education

Bachelor's degree in Computer Science, Engineering or comparable technical field

Tools

Jenkins

UrbanCode Deploy

Qlik Replicate

Git/Bitbucket

ServiceNow

Jira

DBeaver

Job description

Accenture Digital Core

Accenture Digital Core At Accenture Digital Core, we help clients continuously innovate at speed and at scale, combining deep industry expertise with cutting-edge technology to deliver meaningful transformation.You will bring innovation,intelligenceand experience together to shape robust,secureand scalable digital solutions. A senior Oracle DBA role focused on performance optimisation, 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

• 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.

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 optimisation;
• 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 optimisation, 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.

Legal: Must own a valid work permit or EU/Schengen Space Nationality to legally work in Portugal

What We Offer

• 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.