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Junior Data Engineer

Bulgaria, Sofia · Job Posted July 03, 2026
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Job Description

As Data Engineer at Fourth, you are going to take part in the development of our Azure cloud-based Data and MLOps solution which follows the best standards in the world. The main responsibility of the Data engineer will be to maintain and develop the data and modelling environments and to integrate new data sources to it.

Job Responsibility

  • Maintain and develop the data and modelling environments and integrate new data sources to it
  • Writing and improving data pipelines which load data in our data lake and transform it to the Feature store
  • Ensuring all data is available in the right format and reliable quality
  • Working on improvements of the quality of data as well as challenges as data shift and concept drift
  • Testing Data pipelines at staging environments and deploying them at production
  • Writing proprietary packages / frameworks to be used for internal purposes to make the standard tasks easier (such as data load, model testing, exploratory data analysis, etc.)
  • In collaboration with ML Engineers and Data Scientists taking part in A/B testing and monitoring solutions

Requirements

  • Python / pandas / pyspark
  • Experience with building data-powered solutions
  • Experience with building cloud based solutions
  • Experience with development, deployment and monitoring of data and machine learning solutions
  • Strong coding skills (clean and commented code, version control, documentation) and usage of AI to boost codding performance
  • Knowledge about big data infrastructure
  • Knowledge and interests in DataOps and MLOps – namely development, testing, deployment and monitoring of data and ML solutions
  • using tools like MLFlow, KubeFlow, AirFlow or similar
  • Git and Docker
  • Interest in data science, machine learning, and forecasting is a big plus

Nice to have

Interest in data science, machine learning, and forecasting is a big plus

What we offer

  • 25+ days off, as well as birthday day off and 4 charity days off per year
  • Flexible start and end of the working day and hybrid working mode, including a combination remote and in the office
  • Team-centric atmosphere
  • Encouraging healthy lifestyle and work-life balance including supplemental health insurance
  • New parents bonus scheme

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