Senior Oracle Database Administrator (Dba) Lisboa

Senior Oracle Database Administrator (Dba)
Lisboa
Lisboa, Lisboa, Portugal

Start ASAP Duration> 12 months Job Description: Job Title: Senior Oracle DBA Job Type: B2B Contract Location: Lisbon, Portugal (Hybrid work - 2x week) Duration: 12 months initial contract + extension Main Responsibilities Perform advanced performance tuning and optimization across Oracle, Postgre
SQL, MSSQL, and Sybase environments. Deliver
- level technical support to internal DBA teams and external client deployments. Ensure high availability, security, and resilience of all production and nonproduction database systems. Continuously monitor, analyze, and troubleshoot system and
- level performance bottlenecks. Collaborate with developers, Dev
Ops, and infrastructure teams to design scalable, efficient database architectures. Participate in R&D initiatives by evaluating new database features and technologies for integration into the CV platform. Lead database migrations, version upgrades, and patch management processes. Establish and maintain robust documentation and best practice guidelines for database operations. Key Requirements 5+ years of experience as a professional DBA, with
- level Oracle database administration. Hands-on experience with Postgre
SQL, MSSQL, Sybase, and optionally Maria
DB/My
SQL. Deep knowledge of SQL scripting, query optimization, and execution plan analysis. Proven ability to conduct performance troubleshooting and root cause analysis in production environments. Solid understanding of Linux/Unix systems and shell scripting. Experience managing and supporting databases on cloud platforms, specifically Oracle Cloud Infrastructure (OCI) and Amazon Web Services (AWS). Nice to Have Familiarity with monitoring tools (e. g. , Oracle Enterprise Manager, pg
Admin, etc. ) and automation frameworks is a plus. Excellent communication skills and a
- oriented, proactive mindset. Oracle Certified Professional (OCP) or equivalent certifications. Experience working in agile/Scrum environments. Ability to engage with clients directly and provide
- level support. Other Details Work Model: Hybrid work setup — 2 days/week onsite at Spaces, Marquês de Pombal, Lisbon. Join a specialized DBA team that emphasizes technical discussions and collaborative
- solving. Work on both internal platforms and external client environments.