ETL Tester

Capgemini; Województwo pomorskie; Hybrid; PLN 180,000 - 280,000; Full time

Benefits offered by this job

Hybrid working model

70+ learning paths on NEXT platform

Access to Education resources

Global technology communities

Job summary

Capgemini Poland is seeking an experienced ETL Tester to join the Financial Services data transformation program. You will ensure data quality, accuracy, integrity, and completeness across complex data warehouse and reporting solutions, working closely with business and technical stakeholders.

You will engage in end-to-end testing of ETL, data migration, and reporting initiatives, using SQL to validate data across source, staging, and target systems and contributing to quality improvements in

Qualifications

• 6+ years of experience in software testing, including at least 3 years in ETL, data warehouse, or data migration testing.
• Strong SQL skills, including DDL, DML, DQL, joins, aggregations, and subqueries.
• Experience with data quality validation, data reconciliation, and data migration testing.
• Experience working in Agile environments.
• Advanced English language skills.

Responsibilities

• Collaborate with business, data, engineering, and product stakeholders to understand requirements, ETL processes, mappings, and transformation rules.
• Plan, design, execute, and maintain tests for ETL, data warehouse, reporting, and data migration areas.
• Perform functional, system, integration, regression, user acceptance, and end-to-end data validation testing.
• Use SQL to verify data quality, completeness, consistency, accuracy, and reconciliation between source, staging, and target systems.
• Identify, document, track, and analyze defects, data anomalies, and root causes.
• Prepare test reports and communicate progress, risks, and quality insights to stakeholders.
• Support test data preparation, data masking, data validation, and continuous improvement of testing practices.

Skills

ETL testing

Data quality validation

Data reconciliation

Data migration testing

Data profiling

Data analysis

SQL

Agile

English (advanced)

Job description

Choosing Capgemini means choosing a company where you will be empowered to shape your career in the way you'd like, where you'll be supported and inspired by a collaborative community of colleagues around the world, and where you'll be able to reimagine what's possible. Join us and help the world's leading organizations unlock the value of technology and build a more sustainable, more inclusive world.

YOUR ROLE

You will join Capgemini's Financial Services team and contribute to one of the largest data transformation programs in the Nordic banking sector. As an ETL Tester, you will help ensure the quality, accuracy, integrity, and completeness of data across complex data warehouse and reporting solutions. In this role, you can expect real impact on critical banking processes, close collaboration with business and technical stakeholders, and growth in modern data quality engineering practices.

YOUR PROJECT

You will work in an agile environment supporting complex ETL, data warehouse, reporting, and data migration initiatives. This role is ideal for someone who enjoys working with large datasets, source-to-target mappings, transformation rules, and end-to-end data flows supporting banking and regulatory requirements.

YOUR CLIENT

You will collaborate with product, business, data, and engineering stakeholders in the financial services domain. Your work will support quality decisions related to data correctness, migration readiness, regulatory reporting, and reliable delivery of banking solutions.

YOUR TASKS

• Collaborating with business, data, engineering, and product stakeholders to understand requirements, ETL processes, mappings, and transformation rules.
• Planning, designing, executing, and maintaining tests for ETL, data warehouse, reporting, and data migration areas.
• Performing functional, system, integration, regression, user acceptance, and end-to-end data validation testing.
• Using SQL to verify data quality, completeness, consistency, accuracy, and reconciliation between source, staging, and target systems.
• Identifying, documenting, tracking, and analyzing defects, data anomalies, and root causes.
• Preparing test reports and communicating progress, risks, and quality insights to stakeholders.
• Supporting test data preparation, data masking, data validation, and continuous improvement of testing practices.

YOUR PROFILE

• 6+ years of experience in software testing, including at least 3 years in ETL, data warehouse, or data migration testing.
• Strong understanding of software testing fundamentals and the testing lifecycle.
• Hands-on experience with ETL testing, data quality validation, data reconciliation, data migration testing, data profiling, and data analysis.
• Good knowledge of data warehousing concepts and cross-system integrations.
• Strong SQL skills, including DDL, DML, DQL, joins, aggregations, and subqueries.
• Experience validating large datasets and complex data transformations.
• Ability to independently analyze requirements and define testing approaches.
• Experience with defect management and test documentation.
• Strong communication, collaboration, and stakeholder management skills.
• Experience working in Agile environments.
• Advanced English.

What You'll Love About Working Here

• Access to more than 70 learning paths with certification opportunities (e.g. GenAI, Architects, Google) on our NEXT platform. Expand your knowledge with free access to Education First, TED Talks, Udemy Business, and training materials.
• Advanced technology: work with modern tools and platforms while co-creating solutions for large global organizations.
• Community Hub, where you can grow in one of more than 20 technology communities focused on areas such as Java, Agile, AI, and Cloud.
• Enjoy a hybrid working model that, after onboarding, lets you combine work in a modern office with ergonomic work from home.

NOTE: The hybrid working model is available after onboarding. Details regarding work organization will be discussed during the recruitment process.

Your development path: In this role, you can develop your skills in data quality engineering, ETL testing, data migration validation, SQL-based testing, and modern software delivery practices. You will also have room to strengthen your impact on test strategy, stakeholder collaboration, and quality improvements in large-scale financial services programs.

GET TO KNOW US

Capgemini is committed to diversity and inclusion, ensuring fairness in all employment practices. We assess people based on qualifications and performance, not personal characteristics, striving to create a workplace where everyone can succeed and feel valued.

Want to get to know us better? Check out our Instagram - @capgeminipl or visit our Facebook profile - Capgemini Polska. You can also find us on YouTube!

About Capgemini

Capgemini is a global business and technology transformation partner, powered by AI and delivering tangible business value to organizations around the world. It helps clients not only imagine a better future but make it a reality through the power of technology, AI, and human potential. As a responsible and diverse organization with nearly 60 years of history, it employs more than 420,000 people in over 50 countries. Capgemini delivers end-to-end services and solutions, from strategy and design to engineering and operations, drawing on deep industry expertise and a broad partner ecosystem. In 2025, the Capgemini Group reported global revenues of €22.5 billion.