On-site Warsaw Data Engineer: ETL & Analytics Pipelines

EPC Network; Warszawa; On-site; PLN 150,000 - 230,000; Full time

Benefits offered by this job

Cozy office in Warsaw

Job summary

EPC Network is seeking a Middle Data Engineer to own data pipelines, integrate data from APIs and internal sources, and maintain high-quality data models within an international, fast-paced environment.

You will collaborate with Analytics and cross-functional teams, ensuring fresh, well-documented data for analytics and decision-making in Warsaw offices. Strong SQL, Python, and cloud data warehouse experience are essential to succeed.

Qualifications

• 2–3+ years as a Data Engineer or similar role.
• Solid SQL: window functions, joins, deduplication with large datasets.
• Hands-on experience with a cloud data warehouse (BigQuery is a strong plus).
• Experience building ETL/ELT pipelines within an existing architecture.
• Proficiency in Python for data processing, API integrations, logging, and error handling.
• Familiarity with dbt or equivalent SQL transformation tools.
• Experience with orchestration tools (Airflow / Prefect / Dagster).
• Understanding of pipeline monitoring and data quality checks; secure data access.

Responsibilities

• Develop and maintain ETL/ELT pipelines within your domain following team standards.
• Work with data from APIs, third-party platforms, and internal sources; maintain API integrations.
• Write idempotent pipelines, adapt to schema changes, and backfill when needed.
• Implement data quality checks for freshness, completeness, and accuracy.
• Identify and resolve data issues; escalate complex cases to Senior/Lead when needed.
• Build and maintain fact and dimension tables and analytical marts with documentation.

Skills

SQL

Python

dbt

BigQuery

Tools

Airflow

Prefect

Dagster

Git

Cloud Composer

Cloud Storage

Job description

EPC Network is seeking a Middle Data Engineer to own data pipelines, integrate data from APIs and internal sources, and maintain high-quality data models within an international, fast-paced environment.

You will collaborate with Analytics and cross-functional teams, ensuring fresh, well-documented data for analytics and decision-making in Warsaw offices. Strong SQL, Python, and cloud data warehouse experience are essential to succeed.