Backend Engineer
Senior Oracle Database Administrator
Warsaw
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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.
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