Spark / Data Lakehouse Developer @ Mindbox Sp. z o.o.

Proven experience as a Data Engineer / Spark Developer in big data or cloud ecosystems. Strong knowledge of Apache Spark , especially in data processing and ETL pipeline development. Hands‑on experience with MongoDB and ODS‑type data store architectures. Practical experience in Data Lakehouse technologies such as Delta Lake, Apache Iceberg or Hudi. Proficiency in Python and/or Scala , including data manipulation and pipeline scripting. Solid understanding of data modeling , data reconciliation,…