Senior Database Migration Consultant

We are recruiting for an international technology consultancy delivering complex cloud and digital transformation projects across different industries. The company works on large-scale technology modernisation programmes, including cloud, data platforms and application development.

In this role, you will join a long-term database modernisation programme, focusing mainly on Oracle to PostgreSQL migrations. You will own significant migration work packages and hands-on production cutovers, working closely with cloud, DBA, QA, application and client teams. The project involves a large number of planned releases, requiring active support during scheduled production migration windows.

Key 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

Ideal candidate profile

• Strong experience in database engineering and/or database migration

• 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

Conditions

• B2B contract

• 100% remote work

• Salary: 150–200 PLN net/h

• Long-term project

• Working in UK hours

• Regular weekend and out-of-hours work required to support planned production releases

• Production release windows may last up to 24 hours, with some releases potentially requiring support for longer periods

Recruitment steps

• Phone call with Recruiter (20–30 min.)

• Technical verification call focused on your experience and project requirements

• Technical interview with the client, including practical questions and potentially live coding or a technical task

• Feedback and decision

W KUBO naprawdę zależy nam na ludziach. Zapraszamy osoby w różnym wieku, o różnych tożsamościach
i sposobach funkcjonowania oraz niezależnie od sytuacji zdrowotnej i rodzinnej. Autentyczność jest dla nas wartością, a naszym celem jest uczciwy i otwarty proces dla wszystkich.

At KUBO, we genuinely care about people. We welcome candidates of all ages, backgrounds, identities, family constellations, health situations, and ways of thinking and interacting with the world. You’re welcome to be yourself — we value authenticity, and we’re committed to creating a fair and inclusive process for everyone.