Backend Developer (PySpark + Python, Java, Azure)(1-day weekly Gdynia

Dear Consultant,

We are searching for a Backend Developer who will be responsible for building and supporting Spark-based data processing solutions on Microsoft Azure and Microsoft Fabric platforms for a multinational client. Please send CV to (marcillina.tietjen@dcvtechnologies.co.uk) if you are interested.

Backend Developer (PySpark + Python, Azure)

Location: Gdynia, Poland (1 day/week onsite)

Contract Duration: 1 year

Start Date: 01 Feb 2026

Experience: 8–10 yearsday

Work Model: Hybrid (4 days WFH)

Key Responsibilities

• Develop applications using PySpark and Spark (batch and streaming)

• Program using Python notebooks

• Build and run Spark jobs on Microsoft Fabric

• Optimize Delta tables

• Develop using Java (OOP)

• Work with relational and NoSQL databases

• Use GitLab, unit testing, and CI/CD pipelines

• Troubleshoot technical issues

• Work in Agile environment and communicate effectively in English

Must Have Skills

• Microsoft Azure Cloud Platform

• Microsoft Fabric Platform

• PySpark

• Spark programming (batch & streaming)

• Python (Notebooks)

• Delta table optimization

• Java (OOP)

• Relational & NoSQL databases

• GitLab, Python unit testing, CI/CD pipelines

• Agile methodology

• Strong English communication

Better to Have

• Spark performance tuning

• Docker

• Kubernetes