Senior oracle database administrator

SENIOR ORACLE DATABASE ADMINISTRATOR (DBA) (HYBRID LISBON)

Portuguese company hires for hybrid position

Location: Lisbon, Portugal

⚠️ Only candidates already based in Portugal will be considered

Work Model: Hybrid – 3 days per week in the office

Working Hours: 9 AM – 6 PM, with additional client support from 6 PM to 9 PM on Mondays, Tuesdays, Thursdays, and Fridays, when requested.

️ Language Requirements: Portuguese C2 and English B2+ (mandatory)

Seniority: Senior (8+ years)

Start Date: January 4, 2027

Project Duration: 36 months, with possibility of renewal

Rate Between €4500 - 5100 RV or Unipessoal (preferred) / €2500 - 3000/month gross under an employment contract (CTI), depending on proven experience

⚠️ Instructions: Please send your CV in English and make sure to include all skills and experience that match the requirements of the opportunity. This will significantly increase your chances of success.

About the Opportunity

We are looking for a highly experienced Senior Oracle Database Administrator for our client with over 8 years of hands-on experience managing complex, business-critical Oracle environments. The ideal candidate will have strong expertise in Oracle RAC, Data Guard, RMAN, high availability, disaster recovery, and performance tuning. This role requires experience with both legacy and modern Oracle database versions, as well as the ability to ensure database stability, security, and operational continuity in demanding enterprise environments.

Responsibilities

• Install, configure, administer and maintain Oracle database environments supporting business-critical applications.
• Ensure the availability, reliability, security and performance of OLTP and OLAP database systems.
• Manage high-availability architectures using Oracle Real Application Clusters (RAC) and failover solutions.
• Implement, administer and maintain Disaster Recovery solutions using Oracle Data Guard.
• Perform database backup and recovery operations using Oracle RMAN.
• Plan and execute database migrations, version upgrades, patching and maintenance activities.
• Monitor database performance, identify bottlenecks and implement infrastructure and application-level tuning improvements.
• Administer legacy and modern Oracle database environments.
• Troubleshoot complex database incidents and provide advanced technical support.
• Maintain monitoring and administration solutions, including Oracle Grid Control.
• Produce technical documentation and contribute to operational procedures.
• Ensure compliance with IT service management, security and operational best practices.
• Collaborate with infrastructure, application development and technical support teams.

Requirements

• More than 8 years of professional experience in Oracle Database Administration within OLTP and OLAP environments.
• Experience installing and administering Oracle Database versions 7, 8i, 9i, 10g, 11g, 12c, 18c and 19c.
• Strong expertise in high-availability solutions, including Oracle RAC and failover mechanisms.
• Hands-on experience with Oracle Data Guard.
• Advanced knowledge of backup and recovery using Oracle RMAN.
• Proven experience in database migrations, upgrades and patch management.
• Experience in database performance analysis, SQL tuning and infrastructure optimisation.
• Experience with Oracle Grid Control.
• Good knowledge of Linux, HP-UX and Windows operating systems.
• Knowledge of ISO 20000 and ISO 27001 standards.
• Strong troubleshooting, communication and problem-solving skills.
• Ability to work independently and collaboratively in business-critical environments.

Required Certifications

• Oracle Certified Professional (OCP) – 11g, 12c and 19c.
• Oracle Certified Expert – Oracle Real Application Clusters 11g and Grid Infrastructure Administrator.
• Oracle Database SQL Certified Expert.
• Oracle Database 11g Performance Tuning Certified Expert.
• Oracle Certified Professional – MySQL 5.6 Database Administrator.
• Oracle Cloud Database Migration and Integration 21c Certified Specialist.
• Relevant ISO 20000 and ISO 27001 qualifications or certifications.

Additional Information

The role requires availability for additional client support activities between 6:00 PM and 9:00 PM on Mondays, Tuesdays, Thursdays and Fridays, when requested. The successful candidate will join a long-term projec