Data Migration Consultant Developer

BlitzenX Solutions; Polska; Hybrid; PLN 200,000 - 420,000; Full time

Job summary

BlitzenX Solutions in Poland seeks a high-caliber Data Migration Consultant Developer with proven Guidewire Migration expertise to drive enterprise-grade data migrations from legacy systems to PolicyCenter.

You will lead end-to-end migrations, design mappings, and collaborate with cross-functional teams to ensure accuracy, auditable processes, and production readiness across multiple environments.

Qualifications

• Mandatory Mammoth Certification – Data Migration Track.
• 8+ years of total experience, with at least 5+ years in Guidewire Data Migration.
• Proficient with Guidewire Data Migration Framework, Mammoth ETL, and related Guidewire tools.
• Strong knowledge of Guidewire PolicyCenter data model and its integration with external legacy systems.
• Proficiency in SQL, PL/SQL, and data transformation scripting (Python, Java, or Groovy preferred).
• Hands-on experience with data cleansing, mapping, validation, and reconciliation processes.
• Familiarity with insurance domain data models - P&C policy, claims, and billing.

Responsibilities

• Lead end-to-end data migration activities within Guidewire PolicyCenter implementations, from requirement gathering to post-migration validation.
• Execute data extraction, transformation, and loading (ETL) processes leveraging Guidewire Data Migration Suite, Mammoth tools, and relevant migration utilities.
• Collaborate with business analysts, data architects, and Guidewire developers to define data mapping, cleansing, and transformation logic.
• Develop high-performance migration scripts and ensure consistency, accuracy, and integrity of migrated data.
• Perform dry runs, reconciliation, and final migration cycles across multiple environments with zero-defect tolerance.
• Analyze legacy data structures, identify gaps, and design optimized migration strategies aligned with client timelines.
• Contribute to migration playbooks, data models, and technical documentation for enterprise rollout and audit compliance.
• Participate in defect triage, issue resolution, and post-migration quality checks to ensure production readiness.

Skills

Data migration expertise

Stakeholder communication

Autonomous work

Documentation

Education

Mammoth Certification – Data Migration Track

Tools

Guidewire Data Migration Framework

Mammoth ETL

Guidewire tools

SQL

PL/SQL

Python/Java/Groovy

Job description

We are seeking a high-caliber Data Migration Consultant Developer with proven expertise in Guidewire Data Migration methodology and tools. The ideal candidate must hold a Mammoth Certification (Data Migration Track) and bring extensive, hands-on experience in migrating client data from legacy Policy systems to Guidewire PolicyCenter. This role demands precision, scalability thinking, and deep domain knowledge to ensure seamless migration within enterprise-grade insurance transformations.

Key Responsibilities

• Lead end-to-end data migration activities within Guidewire PolicyCenter implementations, from requirement gathering to post-migration validation.
• Execute data extraction, transformation, and loading (ETL) processes leveraging Guidewire Data Migration Suite, Mammoth tools, and relevant migration utilities.
• Collaborate with business analysts, data architects, and Guidewire developers to define data mapping, cleansing, and transformation logic.
• Develop high-performance migration scripts and ensure consistency, accuracy, and integrity of migrated data.
• Perform dry runs, reconciliation, and final migration cycles across multiple environments with zero-defect tolerance.
• Analyze legacy data structures, identify gaps, and design optimized migration strategies aligned with client timelines.
• Contribute to migration playbooks, data models, and technical documentation for enterprise rollout and audit compliance.
• Participate in defect triage, issue resolution, and post-migration quality checks to ensure production readiness.

Required Skills & Qualifications

• Mandatory: Mammoth Certification – Data Migration Track.
• Minimum 8+ years of total experience, with at least 5+ years in Guidewire Data Migration.
• Proven expertise with Guidewire Data Migration Framework, Mammoth ETL, and related Guidewire tools.
• Strong knowledge of Guidewire PolicyCenter data model and its integration with external legacy systems.
• Proficiency in SQL, PL/SQL, and data transformation scripting (Python, Java, or Groovy preferred).
• Hands-on experience with data cleansing, mapping, validation, and reconciliation processes.
• Familiarity with insurance domain data models - particularly P&C policy, claims, and billing.
• Ability to work autonomously in distributed teams with a delivery-focused mindset.
• Excellent communication, stakeholder management, and documentation skills.

Preferred Skills

• Experience with Guidewire Cloud migrations.
• Exposure to MuleSoft, Informatica, or other integration platforms.
• Experience working within Agile / DevOps delivery models.