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Data Engineer

Hays
Department:Data Engineer
Type:REMOTE
Region:EU
Location:Poland
Experience:Mid-Senior level
Estimated Salary:PLN90,000 - PLN130,000
Skills:
PYTHONSQLPANDASPLOTLYSTREAMLITDASHLARGE LANGUAGE MODELSMLAPISDATA PIPELINESDATA ENGINEERINGDATA SCIENCE
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Job Description

Posted on: December 31, 2025

Role Overview:

  • Operate at the intersection of data science, data engineering, AI engineering, and operations.
  • Collaborate closely with the DaaS Delivery Operations team and cross-functional stakeholders.
  • Key responsibilities include:
  • Developing technical specifications.
  • Designing evaluation workflows.
  • Implementing quality standards and measurement frameworks.
  • Building ML-assisted applications to optimize data pipelines and drive technical innovation.
  • Ideal candidate:
  • Comfortable working across the entire presales-to-delivery lifecycle.
  • Skilled at solving complex, multi-faceted technical challenges.
  • Strong communicator and effective team player.

Key Responsibilities:Client Discovery & Presales

  • Support sales teams in scoping projects and assessing technical feasibility.
  • Prepare technical demos, specifications, and sample datasets.
  • Define success metrics and baseline evaluation frameworks.

Project Delivery

  • Build and maintain data pipelines and quality measurement systems.
  • Generate and enhance synthetic datasets to accelerate client workflows.
  • Deliver production-ready datasets with clear documentation and QA standards.

Technical Partnership & Innovation

  • Define production workflows and ensure smooth client implementations.
  • Troubleshoot technical issues and unblock delivery teams.
  • Continuously improve processes, tools, and evaluation methods.
  • Identify opportunities to extend or expand client engagements.

Required Skills & Technologies

  • Experience: 5+ years in data science or data engineering roles.
  • Technical Skills: Python, SQL, pandas, Plotly, Streamlit, Dash.
  • ML & AI: Familiarity with Large Language Models (LLMs) and deploying ML in production environments.
  • APIs: Experience working with APIs and interpreting technical documentation.
  • Soft Skills: Strong problem-solving, collaboration, and communication abilities.

Team

  • International team with mixed seniority levels.
  • Methodology: (to be specified, e.g., Agile/Scrum).

Additional Requirements

  • English proficiency: C1 level (essential for client communication and technical documentation).
  • Personality traits: Proactive, articulate, and highly collaborative.
Originally posted on LinkedIn

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