Senior Data Consultant (Hadoop, Spark)

GFT · Kraków, Poland · On site · 4 days ago

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Posted October 10, 2026 · Read from GFT
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Type of contract: B2B contract

Salary range: 125-163 PLN net/h

What will you do?

You will work as a key member of a technical team alongside Engineers, Data Analysts and Business Analysts, contributing to a collaborative Agile development process while designing, developing and maintaining scalable data solutions in a dynamic DevOps environment.

Your tasks

Define and contribute to software design and development using Pyspark

Automate testing of new and existing components

Promote development standards through code reviews and mentoring

Provide production support and troubleshooting

Implement tools and processes ensuring performance, scalability and monitoring

Collaborate with Business Analysts to interpret and implement requirements

Participate in planning, sprint reviews and retrospectives

Contribute to system architecture and design

Requirements

Experience with Pyspark or Scala development and design

Experience using scheduling tools such as Airflow

Knowledge of Hadoop ecosystem including Spark, Hive, YARN and ETL frameworks

Strong SQL and RESTful services knowledge

Experience working on Unix or Linux platforms

Hands-on experience building data pipelines using Hadoop components

Experience with Git, GitHub, Jenkins, Ansible and JIRA

Understanding of big data modelling using relational and non-relational techniques

Experience debugging code and communicating findings to development teams

Openness to work 2 days a week from our client's office (Kraków)

Nice to have

Experience with Elasticsearch

Experience developing Java APIs

Experience in data ingestion processes

Understanding of cloud design patterns

Exposure to DevOps and Agile methodologies such as Scrum and Kanban

Experience with Spark streaming

Experience with Apache Airflow in production

Experience with Hadoop ecosystem in enterprise environments

Knowledge of Python backend services

Experience with Scala for high performance systems

Experience in data integration and ETL processes

Knowledge of PL/SQL

Experience with Linux and Unix system operations

Employer
GFT
Location
Kraków, Poland · On site