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Offer summary
(Summary generated by AI based on the full job description)
The project targets banking data systems focused on data processing and data warehouse solutions. Core technologies are SQL and ETL tools, with optional Teradata. Responsibilities include developing and maintaining ETL processes, writing SQL for extraction and transformation, integrating data from multiple sources, preparing data per requirements, monitoring solutions, ensuring data quality and resolving processing issues. Required at least 2 years in ETL/data engineering, strong SQL knowledge, basic data warehouse concepts, good English, fluent Polish, residency in Poland.
from: 30 October 2026
to: 29 November 2026
salary not specifiedB2B contract
Offer parameters
level:junior • mid
working mode:remote • hybrid • full office
Białystok, Centrum
Requirements
Expected technologies
SQL
Optional technologies
ETL
Teradata
Banking & Finance
Our requirements
- At least 2 years of commercial experience in ETL development, data engineering, or a similar data-focused role
- Good practical knowledge of SQL
- Experience or good understanding of ETL processes and data transformation
- Basic knowledge of data warehouse concepts
- Understanding of data processing and data integration
- Good command of English
- Fluent Polish
- Residency in Poland
Optional
- Experience with Teradata
- Experience in the banking or financial services sector
- Knowledge of banking data environments
Your responsibilities
- Developing and maintaining ETL processes and data flows
- Writing SQL queries for data extraction, transformation, and processing
- Integrating data from different sources into the data warehouse
- Transforming and preparing data according to defined requirements
- Supporting and monitoring existing data processing solutions
- Identifying and resolving issues related to data processing
- Ensuring data quality, integrity, and consistency
- Cooperating with other team members working on data solutions
About the project
We are looking for an ETL Developer to join a data-focused project in the banking sector. In this role, you will work with ETL processes, data flows, and data warehouse solutions, using SQL to process and transform data. This is a great opportunity for someone with initial commercial experience in ETL development who wants to further develop their technical skills and gain experience in the banking domain.
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
ETL Developer (f/m/x)
I apply to:
Sii Sp. z o.o.
Białystok, Centrum
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