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Expert JavaScala Consultant with Spark

GFT


Job Location:

Kraków - Poland

Monthly Salary: Not provided by the employer
Posted: 21 August 2026 (15 days ago)
Application Deadline: 18 November 2026
Vacancies: 1 Vacancy

Job Summary

Type of contract: B2Bcontract

Salary range: 155 - 205 PLN/H

What will you do

You will join a global agile team responsible for building and enhancing data processing and storage solutions that support risk management and surveillance capabilities. Working closely with Product Owners Analysts Architects Data Scientists and Engineers you will contribute to the development of scalable big data solutions and help deliver key strategic initiatives within a highly regulated financial environment.

Your tasks

  • Work with Product Owners and IT Analysts to understand business and stakeholder requirements
  • Build and manage data processing components and storage technologies
  • Onboard new data sources and develop data processing pipelines
  • Prepare and deliver data views required by application development teams
  • Collaborate with Data Scientists to productionise analytics solutions
  • Develop software in line with continuous integration and test-driven development principles
  • Validate technical designs and ensure adherence to architectural standards
  • Perform unit testing and maintain high code quality standards

Requirements

  • Practical experience with Apache Spark
  • Strong programming experience using Java and/or Scala
  • Experience building and maintaining ETL solutions
  • Experience working with big data processing technologies
  • Strong communication skills in English
  • Openness to work hybrid from our clients office (Kraków) 8 days a month

Nice to have

  • Experience with Apache Hadoop (YARN HDFS)
  • Experience with Spring Framework
  • Knowledge of Apache Airflow
  • Experience with SQL databases
  • Experience with Elasticsearch
  • Experience with Python
  • Experience deploying services on Google Cloud Platform
  • Knowledge of Maven
  • Knowledge of Git
  • Experience working in Agile environments

Required Experience:

Contract


About Company

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We see opportunity in technology. In domains such as cloud, AI, mainframe modernisation, DLT and IoT, we blend established practice with new thinking to help our clients stay ahead.

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