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Offer summary
(Summary generated by AI based on the full job description)
The project involves building a modern data platform supporting business and analytical processes. Key technologies include Spark, Scala, SQL, Java, Python, Airflow and tools like DevOps, CI/CD, and microservices. Responsibilities cover designing and maintaining scalable data pipelines, optimizing workflows, developing Spark/Scala jobs, and collaborating within Agile with focus on TDD and BDD. Polish and English proficiency plus 5+ years in Big Data Engineering are required.
Big Data Engineer with Spark/Scala (f/m/x)
Company: Sii Sp. z o.o.
from: 18 June 2026
to: 18 July 2026
salary not specifiedB2B contract
Offer parameters
level:senior
working mode:hybrid • full office
Warszawa, Mokotów
Requirements
Expected technologies
Apache Spark
SQL
Scala
Python
Git
Optional technologies
Java
Our requirements
- Minimum 5 years of experience in Big Data Engineering
- Practical knowledge of Spark, SQL, and Java or Scala
- Experience with additional technologies: Python, Airflow, Git, CI/CD, APIs, microservices, DevOps
- Analytical thinking and problem-solving skills
- Independence, proactive attitude, and good organization of work
- Ability to collaborate in an international environment
- Very good command of Polish and English
- Willingness to work in a hybrid model (2–3 days per week in the office)
- Residence in Poland
Optional
- Banking sector experience
Your responsibilities
- Design, develop, and maintain scalable data pipelines and processing systems
- Build efficient solutions for collecting, transforming, and integrating data from diverse sources
- Translate business and analytical needs into technical requirements and data models
- Optimize data workflows to ensure high performance, reliability, and resilience
- Develop and maintain Spark/Scala-based jobs for data ingestion and transformation
- Participate in code reviews and contribute to continuous improvement initiatives
- Work collaboratively within an Agile (Scrum) environment, delivering business value in short iterations
- Follow best engineering practices such as TDD, BDD, clean coding, and DevOps principles
- Create and maintain technical documentation and test plans
About the project
Join a team building a modern data platform that supports key business and analytical processes in an international environment. We are looking for experienced data engineers who want to work with Big Data technologies, develop scalable solutions, and have a real impact on the architecture and development of the platform.
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
Big Data Engineer with Spark/Scala (f/m/x)
I apply to:
Sii Sp. z o.o.
Warszawa, Mokotów
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