Senior Oracle, SQL Server & Azure PostgreSQL DBA

NISH Technologies

Brussel Hoofdstad

Hybrid

EUR 90,000 - 120,000

Full time

4 days ago

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Job summary

NISH Tech BV is seeking an experienced Database Administrator to manage on‑premises and cloud databases (Oracle, SQL Server, Azure PostgreSQL). The role emphasizes availability, performance tuning, security hardening and cross‑platform operations in a hybrid Brussels setting.

You will support Windows Server, IIS, Active Directory/Entra ID and Azure DevOps deployment pipelines while advancing database infrastructure and auditing capabilities. Extensive 10+ years of experience is required.

Qualifications

Database administration and operations.
Oracle Database administration.
Microsoft SQL Server administration.
PostgreSQL administration in Microsoft Azure.
Database installation, configuration and patching.
Database performance monitoring and tuning.
Backup and recovery management.
Listener configuration, tablespace management and user administration.
Automation and scripting for database operations.
Database security, system hardening, access control and auditing.
Vulnerability identification and remediation.
Technical documentation and operational troubleshooting.

Responsibilities

Administer and operate on-premises Oracle and Microsoft SQL Server databases and Azure-hosted PostgreSQL databases.
Perform database installation, configuration, patching and routine maintenance.
Monitor database availability, health and performance, and conduct performance tuning.
Manage database backup, recovery and restoration procedures.
Configure and maintain database listeners, tablespaces and user accounts.
Automate database administration tasks through scripting and automation.
Evolve and maintain database infrastructure, architectures and hosting platforms.
Implement system hardening, user access controls and database auditing.
Identify database security vulnerabilities and coordinate remediation activities.
Analyse security audit findings, database logs and operational events.
Provide technical support to application owners and database users.
Prepare high-quality technical documentation, reports and client presentations.
Support Windows Server and IIS administration activities.
Administer or support Active Directory and Microsoft Entra ID.
Contribute to Azure DevOps deployment pipelines, certificate renewals and operational troubleshooting.