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DBA L3 – Oracle, Postgres, MariaDB & MongoDB

Lisbon, Lisbon, pt💼 Full-time🗓 2025-05-06 → 2026-07-31

Core

Advanced administration and optimization of Oracle, PostgreSQL, MariaDB, and MongoDB databases in high-availability environments.

Role type

L3 Database Administrator

Builds

Production database systems ensuring performance, security, and reliability for corporate clients.

Domain

Enterprise IT / Database Management

Deliverable

production ML models | product features | dashboards & analysis | research | client delivery | infrastructure | physical/clinical work

Required skills

Oracle administration, PostgreSQL administration, MariaDB administration, MongoDB administration, performance tuning, backup and recovery, data replication, automation scripting, security policy compliance, complex incident troubleshooting

Preferred skills

Cloud environment experience (AWS, Azure, GCP), CI/CD pipeline familiarity, Infrastructure as Code (IaC), DevOps practices

Technologies

Oracle, PostgreSQL, MariaDB, MongoDB, AWS, Azure, GCP

Responsibilities

Advanced administration of Oracle, PostgreSQL, MariaDB and MongoDB databases; Performance monitoring and tuning; Backup management, recovery, upgrades, migrations and data replication; Provide 3rd level support in complex and critical incidents; Automate tasks and development of maintenance scripts; Collaborate with development, infrastructure and security teams; Ensure compliance with security policies and best practices

Seniority

Senior, hands-on IC

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