Database Administrator (DBA)

The Role

Database Administrator (DBA) responsible for managing, optimizing, and securing large‑scale, complex databases. Work with engineering teams to design, implement, and maintain high‑performance, scalable, and resilient database systems that power our AI‑driven platform.

Responsibilities include database tuning, backup and recovery strategies, monitoring, and ensuring data integrity while working with structured and unstructured data sources.

This is a fully onsite position based at our office in Lisbon. We are open to supporting relocation efforts.

Responsibilities

• Design, implement, and maintain high‑performance database systems to support large‑scale applications.
• Optimize database queries, indexing strategies, and partitioning to enhance performance.
• Monitor database health, ensuring high availability, scalability, and disaster recovery.
• Manage and fine‑tune SQL and NoSQL databases (e.g., PostgreSQL, MySQL, MongoDB, Redis, DynamoDB).
• Implement database security policies, encryption, and access control to protect sensitive data.
• Automate database backups, replication, and failover mechanisms.
• Work closely with developers to optimize queries, schema design, and data modeling.
• Perform capacity planning and monitor database growth trends.
• Ensure compliance with data governance, GDPR, and other regulatory requirements.
• Stay updated with the latest database technologies, trends, and best practices.

Requirements

• Around 4+ years of experience as a Database Administrator (DBA) or similar role.
• Expertise in relational databases (PostgreSQL, MySQL, SQL Server) and/or NoSQL databases (MongoDB, Redis, Cassandra, DynamoDB).
• Strong knowledge of database optimization, indexing, partitioning, and replication.
• Experience in performance tuning, query optimization, and troubleshooting slow queries.
• Familiarity with database backup, recovery, failover, and disaster recovery strategies.
• Experience with cloud database services (AWS RDS, Aurora, Google Cloud Spanner, Azure SQL).
• Knowledge of scripting for automation (Python, Bash, SQL scripts).
• Understanding of data security best practices, encryption, and compliance requirements.
• Experience working with large, complex datasets and high‑traffic applications.
• Ability to work with DevOps teams to integrate databases into CI/CD workflows.

Benefits

• Apple hardware ecosystem for work.
• Annual bonus.
• Top‑tier health and life insurance.
• Transportation budget.
• Coverflex benefits package for meal allowances, well‑being, and more.
• Childcare support.
• Air Conference – an opportunity to meet the team, collaborate, and grow together.
• Pension fund.
• Urban Sports Club membership.
• Meals 100% free at the hub.