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Data Engineer

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GT

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Location:
Poland , Warsaw

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Category:
IT - Software Development

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Contract Type:
Not provided

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Salary:

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Job Description:

The Senior Data Engineer will design, build, and optimize the batch data pipelines and algorithms that power this matching engine. This is a hands-on role focused on scale, performance, and accuracy, working with Spark, SQL, and modern orchestration tools. This is not a traditional analytics role — it is a deep data platform and algorithmic engineering at massive scale.

Job Responsibility:

  • Build Data Pipelines: Design and maintain robust, scalable ETL/ELT pipelines to ingest and process third-party and first-party datasets
  • Data Quality & Enrichment: Apply transformation, normalization, and enrichment rules to ensure data consistency and usability
  • Collaborate Across Teams: Work with product managers, data architects, and content experts from Coro and Helix to align data structure with business needs
  • Operationalize Matching & Merging Logic: Support the implementation of data matching and entity resolution processes using AI/ML tools and proprietary frameworks
  • Monitor & Troubleshoot Pipelines: Build alerts, logs, and metrics to ensure data flows remain healthy and issues are identified and resolved quickly
  • Documentation & Standards: Contribute to documentation, code quality standards, and internal best practices to ensure maintainability

Requirements:

  • 5+ years of experience in Big Data, Data Platform, or ETL engineering roles
  • Proficient in SQL, Python, and experience with Spark(PySpark or Scala), Airflow, Snowflake, and Azure Data Lake or similar technologies
  • Familiarity with Azure (preferred) or other major cloud platforms
  • Proven experience designing and operating large-scale batch data pipelines
  • Solid understanding of distributed systems and algorithms (partitioning, shuffles, joins, scalability trade-offs)
  • Proactive, detail-oriented, and eager to take ownership of projects and continuously improve systems
  • Comfortable working in a cross-functional environment and open to learning from and supporting teammates

Nice to have:

  • Experience with, or strong interest in, fuzzy and semantic matching techniques
  • Exposure to ML-assisted data pipelines
  • Familiarity with search or retrieval systems (e.g., Elasticsearch, OpenSearch, vector databases)
What we offer:
  • Join a fast-growing, high-impact team
  • Contribute to an ambitious effort to create the highest quality, most comprehensive business directory in the world
  • Be part of a startup-style group within the company that’s redefining how they deliver consulting through productization and data innovation
  • Work with cutting-edge data tools, including AI/ML enrichment, semantic matching, and modern cloud-based infrastructure

Additional Information:

Job Posted:
February 18, 2026

Employment Type:
Fulltime
Work Type:
Remote work
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