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Senior Data Migration Engineer

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Cshark

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Location:
Poland , Wrocław ▼

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Category:
IT - Software Development

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Contract Type:
B2B

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Salary:

135.00 - 170.00 PLN / Hour
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Job Description:

As a Senior Data Migration Engineer, you will be a core execution member of the dedicated migration squad. You will work hands-on across the full migration lifecycle – from extraction and mapping through conversion, validation, and cutover – while also actively building the tooling and accelerators that make future migrations faster and safer (e.g.: artifact observability, version-controlled mapping pipelines, automated validation checks, and reusable migration templates). This is not a maintenance role: you will shape the process, own the tooling, and directly influence delivery velocity.

Job Responsibility:

  • Work hands-on across the full migration lifecycle – from extraction and mapping through conversion, validation, and cutover
  • Actively building the tooling and accelerators that make future migrations faster and safer (e.g.: artifact observability, version-controlled mapping pipelines, automated validation checks, and reusable migration templates)
  • Shape the process, own the tooling, and directly influence delivery velocity
  • Mentor and technically lead parallel migration teams

Requirements:

  • Proven experience with large-scale data migration projects: ETL or systems integration on enterprise-scale projects, transformation pipelines, cutover planning
  • Experience working with XML-based data transformation (mapping files, XSLT, or equivalent config-driven ETL)
  • Proven ability to diagnose complex migration errors under time pressure: root-cause analysis, staging data fixes, re-run coordination
  • Experience coordinating with business stakeholders during UAT and cutover
  • clear written and verbal communication in English
  • Experience with legacy database analysis: reverse-engineering un(der)documented schemas, understanding data semantics and relationships without complete documentation and dealing with corrupted or ambiguous data or metadata
  • Comfortable working with SQL at an advanced level: complex queries, schema analysis, data profiling, and diagnosing data quality issues
  • Strong proficiency in SQL across at least two of: PostgreSQL, Oracle, SQL Server, DB2
  • Solid Java skills (Java 21 ecosystem preferred)
  • comfortable building and extending internal tooling – data pipelines, automation scripts, validation frameworks – with clean, testable code
  • Familiarity with Git workflows, CI/CD pipelines, and infrastructure-as-code practices
  • Good exposure to cloud environments, ideally AWS infrastructure and services
  • Docker: confident setup, troubleshooting, and local environment management
  • Rapid domain understanding: ability to quickly absorb unfamiliar, regulated business domains
  • Governance mindset: documenting decisions, maintaining audit trails, getting formal client sign-off
  • Experience working with subject matter experts to define and validate data transformations and mappings
  • Ability to manage multiple concurrent workstreams
  • Clear communicator: able to explain architectural and domain modelling decisions to both technical and non-technical stakeholders
  • Resilient and persistent under pressure: comfortable working with tight deadlines and high client expectations
  • Actively uses AI-assisted tools (e.g. ChatGPT, Claude, GitHub Copilot or similar) as part of daily development and problem-solving workflow

Nice to have:

  • Exposure to Smalltalk or ObjectStudio
  • Familiarity with S3-compatible object storage, artifact lifecycle management, or observability tooling (dashboards, trend analysis)
  • Experience with cloud-native deployments on AWS
  • understanding of multi-tenant SaaS architectures
  • Debt management, financial services, or accounts receivable domain experience is a significant advantage
  • German language skills (B2+)
What we offer:
  • 100% remote work
  • Flexible hours
  • International projects
  • Business english lessons
  • Participation in charity actions
  • In-house technology workshops

Additional Information:

Job Posted:
March 01, 2026

Employment Type:
Fulltime
Work Type:
Remote work
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