Senior Data Engineer

This is a fully remote position, open to applicants in Poland.

📋 Description

• Establish the technical strategy for pipeline architecture and data quality benchmarks.

• Assume full responsibility for critical pipelines — managing the process from raw data ingestion to clean, well-documented delivery in BigQuery.

• Serve as the primary technical expert on data behavior throughout the platform.

• Design and create data processing, cleansing, transformation, and quality assurance scripts utilizing Python and SQL.

• Manage the operation, upkeep, and enhancement of existing key data pipelines and ETLs.

• Oversee pipeline reliability and data quality standards; systematically identify and address coverage gaps.

• Enhance ETL performance and transition legacy pipelines into a more scalable architecture.

• Establish and uphold data quality standards across the entire pipeline.

• Participate in architectural decisions regarding ingestion, transformation, and design of the delivery layer.

• Maintain comprehensive documentation for the full data lifecycle: every transformation rule, edge case, and business logic decision must be specified.

• Retrieve datasets from external sources: REST APIs, JSON, CSV.

• Execute data migrations and batch updates.

• Conduct exploratory analyses to support new business needs and onboarding of data sources.

• Create proof-of-concept pipelines for new data projects.

⛳️ Requirements

• Bachelor's degree in Computer Science, Information Systems, Statistics, Mathematics, or a related discipline.

• Over 7 years of pertinent experience in data engineering, database, or ETL development.

• Strong proficiency in Python (pandas, numpy); capable of writing production-quality pipeline code.

• Excellent SQL skills along with substantial experience in database design and development.

• Demonstrated experience in ETL development and long-term maintenance.

• Familiarity with Apache Airflow.

• Experience in entity resolution and deduplication across diverse, multi-source datasets.

• Proficient in web scraping, crawler development, and API integration.

• Basic understanding of AI/LLM tools (Claude Code, Copilot, or similar).

🏝️ Benefits

• Monthly travel to Geneva.