E-Solutions
Big Data Developer
Skills
2 months ago
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Important information
Contract type:
Freelance / Contract
Location:
Kraków, Poland
Work mode:
Onsite
Published on:
2 September 2026
What they need
Role:
The role involves designing, developing and supporting scalable Big Data solutions and data pipelines, with strong focus on Scala, Java, Spark and Azure Databricks.
🔹 Responsibilities:
Design and develop scalable data pipelines and applications
Work on ETL/ELT, data processing and data integration
Develop solutions using Scala, Java, Python and Spark
Work with Azure Databricks and Azure services
Participate in architecture and technical design decisions
Develop and maintain automated tests and ensure code quality
Support CI/CD, deployment and production activities
Troubleshoot technical issues and provide solutions
Collaborate with business and technical stakeholders
Contribute to GenAI/LLM-based solutions where applicable
🔹 Mandate Skills:
4+ years of Big Data / Data Engineering experience
Strong Scala & Java development experience
Apache Spark / PySpark
Azure & Azure Databricks
Docker & Kubernetes
GitLab / CI/CD
Maven / Gradle
Bash / Shell scripting
JUnit / Mockito / Cucumber
Postman / API testing
Experience with ETL/data pipelines and distributed data processing
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