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Sii Poland

Senior Data Engineer - immediate start (f/m/x)

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Summary

Senior Data Engineer at Sii Poland building an international e-invoicing solution that retrieves invoices via external APIs, validates their content, and routes them to downstream systems like procurement platforms. Day-to-day work centers on Databricks (Apps, Workflows, Delta Lake) with a Python backend, REST/OAuth 2.0 integrations, and a React.js or Streamlit operational UI.

We are looking for a Senior Data Engineer to join an international e-invoicing project. In this role, you will develop a solution that retrieves invoices via an external API, validates their content, and automatically routes them to the appropriate downstream systems, such as procurement platforms. You will work with Databricks Apps to create a robust backend and provide operational UI support for monitoring processing status and errors. This remote position allows you to collaborate with a skilled team while contributing to a significant project in the field of e-invoicing.

Your tasks

  • Designing and implementing data workflows within Databricks, ensuring optimal performance and reliability
  • Developing backend logic in Python for content validation and API integration
  • Creating and managing APIs, including REST and OAuth 2.0, to facilitate data exchange
  • Building user interfaces using React.js or Streamlit to enhance the operational UI of the Databricks App
  • Implementing CI/CD practices to streamline deployment processes and ensure code quality
  • Utilizing Git for version control and collaboration with the development team
  • Conducting unit and integration testing to ensure the robustness of the solution
  • Monitoring application performance and logging errors for continuous improvement

Requirements

  • Minimum 6 years of experience in data engineering or software development
  • Strong expertise in Databricks, including Apps, Workflows, Delta Lake, and Unity Catalog
  • Proficiency in Python for backend development, routing, and API integration
  • Experience with REST APIs, JSON, and OAuth 2.0
  • Solid understanding of frontend development using React.js or Streamlit
  • Familiarity with Git and CI/CD processes for effective version control and deployment
  • Advanced level of English
  • Availability to start no later than mid-October is required

Job no. JOB-YXLW3

Sii ensures that all hiring decisions are made solely on the basis of qualifications and competence. We are committed to equal and fair treatment of all, regardless of legally protected characteristics. At Sii, we promote a diverse and inclusive work environment, in full compliance with applicable anti-discrimination laws.

Benefits For You

  • Great Place to Work
  • Solid financial situation
  • Contracts with the biggest brands
  • Centre of internal trainings
  • Many experts you can learn from
  • Open and accessible management team
  • Profit sharing
  • Passion Sponsorship program
  • Regular integration events and trips
  • Comfortable and well-equipped offices
  • MySii app
  • Medical care

Skills

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