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November 4, 2026
Data Engineer
Mid • On-site
216,000 - 360,000 PLN/yr
Warsaw, Poland
Quick Facts
Role: Data Engineer
Focus: Large-scale analytics and data platforms for audience measurement and advertising analytics
Work style: Fully remote, office, or hybrid
Description
You will develop data-driven audience measurement and advertising analytics solutions using connected-device and media consumption data. In this role, you validate reporting outputs, troubleshoot pipeline behavior and data anomalies, and orchestrate partner data ingestion workflows with Airflow. You will also support data quality checks and identity resolution match testing across ingestion pipelines.
Responsibilities
Serve as the primary Data Engineering point of contact for report questions (data availability, metric discrepancies, pipeline behavior)
Write and execute SQL queries (BigQuery, PostgreSQL) to validate outputs, isolate anomalies, and confirm fixes
Reproduce and document data issues; coordinate with the core DE team for resolution
Support ad hoc data pulls and validation requests for reporting products
Set up and configure cloud environments for partner data delivery (AWS S3 buckets, IAM policies, SFTP endpoints)
Write and maintain Airflow DAGs (Python) to orchestrate ingestion workflows (scheduling, alerting, dependencies)
Coordinate with external partners on file format specifications, delivery schedules, and test dataset requests
Execute match tests to validate identity resolution across ingestion pipelines
Identify and flag data quality issues in partner files before they reach production pipelines
Requirements
3+ years of experience as a Data Engineer
Hands-on production experience on AWS or Databricks
Strong production SQL with BigQuery and/or PostgreSQL
Python at production quality
Apache Airflow DAG authoring
Distributed processing in production; workflow orchestration
API-first services; experience with streaming or event-driven systems
Bachelor’s degree in a technical field (or equivalent)
English level Upper-Intermediate and above
Benefits
Fully remote or hybrid/office work options
Mentoring and adaptation for new employees
Professional, financial, and career growth
Bonus opportunity up to an additional 1,000 USD/month based on expertise
Corporate training portal with continuously updated content
Certification compensation (AWS, PMP, etc.)
Private health insurance and sports activity compensation
Referral program and additional corporate perks (events, fruits/coffee/snacks/movies)
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