Senior Database Administrator – Oracle (ExaCC / Exadata)

Equação IT is a company focused on boosting technology and solid solutions through our expert consultants leading a high perspective and adding value to our customers with the purpose of providing optimization and business growth to our partners.

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.


What You'll Need

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).


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;

Duration: Long Term Contract.
Location: Lisbon
Work model: hybrid with at least 2 days at the office