Oracle to PostgreSQL Migration Lead

Traffit; Warszawa; On-site; PLN 180,000 - 240,000; Full time

Job summary

KUBO is hiring an experienced database migration engineer to lead Oracle to PostgreSQL migrations within an international cloud modernization programme. You will own migration work packages, perform SQL/DDL/PLSQL conversions, and coordinate production cutovers across UK-aligned hours.

The role requires strong SQL skills and hands-on Oracle and PostgreSQL experience, plus practical knowledge of GCP Database Migration Service and CDC. Collaboration with cross-functional teams is essential.

Qualifications

• Strong SQL skills and ability to troubleshoot complex workloads.
• Experience with Oracle databases, including PL/SQL, schemas, objects and dependencies.
• Hands-on experience with Oracle to PostgreSQL migrations and data migration patterns.

Responsibilities

• Assess Oracle databases, schemas, objects, dependencies and workloads before migration.
• Design target schemas and perform SQL, DDL and PL/SQL conversion and remediation.
• Prepare and execute database migrations, including data movement and replication.
• Configure, operate and monitor GCP Database Migration Service and related replication / CDC tooling.
• Lead hands-on production database migrations and support planned release windows.
• Prepare migration runbooks, validation plans, technical checkpoints and operational documentation.
• Validate migrated data using row counts, checksums, reconciliation and other appropriate methods.
• Monitor migrations, troubleshoot issues and provide technical recommendations during production cutovers.
• Work across the full migration lifecycle: discovery, assessment, design, testing, rehearsal, cutover and stabilisation.
• Collaborate with architects, DBAs, cloud and DevOps engineers, QA, application teams and client stakeholders.
• Contribute to reusable migration scripts, patterns, runbooks and engineering standards.
• Use approved AI and automation tools to support database assessment, SQL conversion, scripting, testing, troubleshooting and documentation.
• Very good SQL skills, including troubleshooting, optimisation and validation of complex workloads.
• Hands-on experience with Oracle, including database objects, schemas, PL/SQL, dependencies and performance.
• Experience with Oracle to PostgreSQL migrations.
• Practical experience with GCP Database Migration Service.
• Knowledge of database replication / Change Data Capture (CDC) and low-downtime migration approaches.
• Experience with production database migrations, cutovers and release activities.
• Ability to work with detailed runbooks, validation criteria and escalation procedures.
• Comfortable troubleshooting critical issues under time pressure and taking ownership during production changes.
• Experience working in international projects where English is the main working language.
• English at C1 level – you will work closely with UK-based teams and stakeholders.
• Comfortable working outside standard business hours when required for production releases.
• Experience with AI tools, coding assistants or automation in engineering is a plus.

Skills

SQL

Oracle

PostgreSQL

GCP

Data migrations

Tools

GCP Database Migration Service

Job description

KUBO is hiring an experienced database migration engineer to lead Oracle to PostgreSQL migrations within an international cloud modernization programme. You will own migration work packages, perform SQL/DDL/PLSQL conversions, and coordinate production cutovers across UK-aligned hours.

The role requires strong SQL skills and hands-on Oracle and PostgreSQL experience, plus practical knowledge of GCP Database Migration Service and CDC. Collaboration with cross-functional teams is essential.