Junior Big Data Engineer (Java / Python)

About the role: Important things for you: Flexible working hours in the hybrid model (4/1) - working hours start between 7:00 a.m. and 10:00 a.m. We also have 30 days of occasional remote work.

The salary range for this position depending on the skill set is as follows (contract of employment, tax-deductible cost): Junior Big Data Engineer: [phone] PLN Annual bonus based on your annual performance and company results. We are looking for a Junior Big Data Engineer to learn how to build and operate the foundations that make data reliable, discoverable, governed, and usable at scale across Allegro. You will work with experienced engineers on production data-platform services and pipelines.

Our products include event ingestion into BigQuery, schema contracts and evolution, data quality and freshness SLAs, data governance and GDPR-related data lifecycle processes, and metadata capabilities. This role is designed for engineers who want to grow beyond business reporting and analytical transformations into software engineering for shared, enterprise-scale data-platform products. This is the right job for you if you: Have commercial experience in Python, Java or Kotlin.

Demonstrate basic ability to write clean, tested code and an eagerness to learn modern software engineering practices. Possess solid SQL fundamentals. Have a basic understanding of data modeling, relational databases, APIs, and common data formats (e.g., JSON, CSV, Avro, Parquet).

Are interested in cloud platfo