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Offer summary
(Summary generated by AI based on the full job description)
The project focuses on data quality validation and testing ETL processes and data warehouse solutions within a global team. Key technologies include SQL and Snowflake, requiring experience in data pipeline testing and data reconciliation. Responsibilities cover data quality verification, testing solutions, and collaboration with data engineering and business teams. The offer includes benefits like private healthcare and support for professional growth.
Data QA Specialist / Data Tester (f/m/x)
Company: Sii Sp. z o.o.
from: 4 August 2026
to: 3 September 2026
salary not specifiedB2B contract (full-time)
salary not specifiedcontract of employment
Offer parameters
level:mid • senior
working mode:remote • hybrid • full office
Łódź, Śródmieście
Requirements
Expected technologies
SQL
ETL
Data Pipelines
Snowflake
Warehouse Management Systems
Our requirements
- At least 3 years of experience as a Data QA Engineer, Data Tester, or in a similar role
- Strong background in data testing, including ETL and data warehouse validation
- Good knowledge of SQL and experience working with Snowflake
- Experience with data reconciliation, data quality checks, and testing data pipelines
- Ability to work across different projects and business domains
Optional
- Experience with Python
Your responsibilities
- Performing testing of data solutions, ETL processes, and data pipelines
- Validating data quality, consistency, and accuracy across multiple data sources
- Executing data warehouse and Snowflake testing activities
- Performing data reconciliation and identifying data quality issues
- Creating and maintaining test scenarios and test documentation
- Collaborating with Data Engineers, Developers, and Business Stakeholders to ensure high-quality data delivery
About the project
We are looking for an experienced Data QA Specialist / Data Tester to join a global team working on data-driven initiatives across multiple projects. In this role, you will be responsible for validating data quality, testing ETL processes, verifying data warehouse solutions, and ensuring the reliability of data pipelines used across the organization.
We are seeking professionals who can quickly adapt to different projects and business domains while maintaining a strong focus on data accuracy, consistency, and quality.
What we offer
- Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas
- Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market
- We share the profit with Workers - over PLN 76M has already been allocated for this aim since 2022
- Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more
- Comfortable workplace – class A offices or remote work
- Dozens of fascinating projects for prestigious brands from all over the world – you can change them thanks to Job Changer application
- PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers
- Investment in your growth – meetups, webinars, training platform and technology blog – you choose
- Fantastic atmosphere created by all Sii Power People
Recruitment stages
- 1.Send your CV
- 2.Talk to us about your expectations
- 3.Learn more about our projects and choose the best
- 4.Start your adventure with Sii!
Sii Sp. z o.o.
Sii is the leading technology consulting, digital transformation, engineering, and business services vendor in Poland. We already employ more than 7 300 professionals and implement projects in a variety of industries for clients from many countries around the world. The Great Place to Work title, won 10 times in a row, proves that at Sii, we create a friendly work environment.
Sii ensures that all employment-related decisions are made solely on the basis of qualifications and competencies. We are committed to equal treatment of all individuals, regardless of any protected characteristics, and promoting a diverse and inclusive work environment.
This is how we work
Data QA Specialist / Data Tester (f/m/x)
I apply to:
Sii Sp. z o.o.
Łódź, Śródmieście
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