Database Platform & Migration Engineer

Dun & Bradstreet; Warszawa; On-site; PLN 180,000 - 240,000; Full time

Job summary

Dun & Bradstreet in Warsaw is seeking an experienced Database Administrator to manage a diverse database estate across Oracle, SQL Server, PostgreSQL, MySQL and MongoDB. You will ensure health, security and performance, and participate in migrations and modernization projects.

The role combines operations and project work, requires 3–5+ years of hands-on DBA experience, strong SQL skills, and familiarity with ITIL processes, service management tools, and automation using Ansible, PowerShell or

Qualifications

• 3–5+ years hands-on database administration across Oracle, SQL Server, PostgreSQL, MySQL or MongoDB.
• Strong SQL skills with experience in performance tuning, backup/recovery and high availability.
• Exposure to heterogeneous database migrations (e.g., Oracle to PostgreSQL/SQL Server).
• Comfort in virtualized environments (VMware/vSphere, GCP/GCVE/AWS) and mixed Linux/Windows hosting.
• Working knowledge of ServiceNow and/or Jira, and ITIL processes (incident, change, problem).
• Scripting and automation instincts (Ansible, PowerShell, shell, Python).
• Fluent English; other European languages welcome.

Responsibilities

• Administer, tune and support production and non-production databases across Oracle, MS SQL Server, PostgreSQL, MySQL and MongoDB.
• Handle incidents, service requests, change requests and vulnerability remediation through ServiceNow, following ITIL practice.
• Build and improve monitoring and observability using Splunk, Zabbix and OpenTelemetry-based database metrics.
• Automate routine tasks, patching and provisioning via Ansible, GitHub and NinjaOne.
• Work security-first: Imperva, Nessus, CyberArk, and alignment with ISO 27001, SOX, CIS and GDPR controls.

Skills

Database administration

SQL skills

ITIL/ServiceNow

Monitoring/observability

Scripting/automation

Virtualized environments

English fluency

Tools

Splunk

Zabbix

OpenTelemetry

Ansible

GitHub

NinjaOne

VMware/vSphere

GCP

AWS

Jira

Job description

Dun & Bradstreet in Warsaw is seeking an experienced Database Administrator to manage a diverse database estate across Oracle, SQL Server, PostgreSQL, MySQL and MongoDB. You will ensure health, security and performance, and participate in migrations and modernization projects.

The role combines operations and project work, requires 3–5+ years of hands-on DBA experience, strong SQL skills, and familiarity with ITIL processes, service management tools, and automation using Ansible, PowerShell or