Senior Oracle Database Administrator

We are looking for an experienced Senior Oracle Database Administrator to support large-scale data center migration and database transformation projects.

This role is focused on Oracle enterprise environments, including migrations from standalone databases to Oracle RAC , platform relocation, high availability, validation, and post-migration support.

What You’ll Work On

You will work on complex Oracle database migrations and infrastructure transformation projects with strict timelines and planned cutovers.

A key part of the role will be transforming existing standalone Oracle environments into highly available RAC-based platforms while ensuring database stability throughout migration and testing cycles.

You will work closely with application and infrastructure teams during design, migration, SIT/UAT, performance testing, cutover, and post-migration support.

How You’ll Work

• Location: Warsaw, Poland – full-time onsite
• Languages: Polish and English
• Technology areas: Oracle Database, Oracle RAC, Grid Infrastructure, ASM, RMAN, Linux/UNIX, High Availability, Performance Tuning, Data Center Migration

What You’ll Do

As a Senior Oracle Database Administrator, You Will

• design, build, and support Oracle RAC environments,
• migrate databases between data centers and technology platforms,
• transform standalone Oracle databases into clustered RAC environments,
• support database migration planning, cutovers, and post-migration stabilization,
• ensure high availability, performance, backup, and recovery of Oracle databases,
• troubleshoot Oracle RAC, Grid Infrastructure, ASM, and database performance issues,
• support SIT, UAT, and performance testing during database changes and migrations,
• work closely with application, infrastructure, and project teams,
• manage database changes according to established ITSM processes,
• provide technical expertise during critical migration windows.

Skills You Have

We Are Looking For Someone Who Has

• 5+ years of professional experience as an Oracle DBA in enterprise environments,
• strong hands-on experience with Oracle RAC, including installation, configuration, and troubleshooting,
• practical experience with database migrations, especially data center relocations and platform transformations,
• experience moving Oracle environments from standalone to RAC architecture,
• strong knowledge of Oracle Grid Infrastructure, ASM, RMAN, backup/recovery, and high availability,
• experience supporting application testing during database migrations and major changes,
• good Oracle performance tuning and troubleshooting skills,
• strong Linux/UNIX knowledge,
• experience working on project-driven migrations with strict timelines and cutovers,
• understanding of ITSM processes, including incident, change, and problem management,
• professional working proficiency in both Polish and English.

Nice To Haves

Experience in any of the following will be a strong advantage:

• large-scale data center migration programs,
• complex enterprise application environments,
• cross-platform Oracle migrations,
• disaster recovery and business continuity solutions,
• Oracle Data Guard,
• database automation or scripting,
• performance testing and capacity planning,
• working in highly regulated or business-critical environments.

Why Apply

This Role May Be a Strong Fit If

• you enjoy working on complex Oracle infrastructure transformations,
• you have strong Oracle RAC expertise and want to apply it in large migration programs,
• you are comfortable taking ownership during critical cutovers,
• you enjoy working across database, infrastructure, and application teams,
• you want to work on technically demanding enterprise database environments,
• you value reliability, high availability, performance, and disciplined change management.

Steps After You Apply

• You’ll be invited to an online meeting with our recruiter.
• The next step will be a technical interview focused on your Oracle DBA, RAC, migration, and troubleshooting experience.
• If successful, you’ll proceed to the final interview stage.