Senior Oracle DBA — Remote & Cloud Performance Specialist

LUZA Group; Lisboa; On-site; EUR 60,000 - 90,000; Full time

Benefits offered by this job

Remote work whenever possible

Work equipment provided

Benefits plan

Competitive salary

Job summary

Luza, a dynamic consulting firm, seeks an experienced Oracle DBA to optimize performance and reliability across large production environments. You will focus on compression, query tuning, indexing, and CPU allocation on ExaCC, while aligning backup/recovery for ZFS and ZDLRA and guiding cross-functional teams.

Ideal candidates have 5–10 years of hands-on Oracle experience, Linux/Unix expertise, and a track record of improving I/O efficiency.

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

Responsibilities

• Optimize Oracle database performance through compression, 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.

Skills

Performance tuning

Compression

Resource optimization

Database optimization

Education

University degree in Computer Science, Engineering or comparable technical field

Tools

ExaCC

ZFS

ZDLRA

Azure SQL

PostgreSQL

Synapse

Job description

Luza, a dynamic consulting firm, seeks an experienced Oracle DBA to optimize performance and reliability across large production environments. You will focus on compression, query tuning, indexing, and CPU allocation on ExaCC, while aligning backup/recovery for ZFS and ZDLRA and guiding cross-functional teams.

Ideal candidates have 5–10 years of hands-on Oracle experience, Linux/Unix expertise, and a track record of improving I/O efficiency.