Senior Data Engineer - financial industry (f/m/x)

Sii Poland

Poznań

On-site

PLN 240,000 - 310,000

Full time

2 hours ago

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Benefits offered by this job

Great Place to Work

Profit sharing

Medical care

Centre of internal trainings

MySii app

Open management

Regular integration events

Learning from experts

Contracts with brands

Comfortable offices

Job summary

Sii Poland in Poznań is seeking a Senior Big Data Developer to design and implement a modern data platform using Databricks and the Azure ecosystem. You will build scalable data solutions and optimize ETL/ELT pipelines to support analytics and AI-powered development.

The ideal candidate has 5+ years in data engineering, hands-on Python/PySpark, and strong Azure experience, with a passion for delivering reliable data workflows and high-quality code.

Qualifications

5+ years of experience in data engineering or big data roles.
Strong Python and PySpark hands-on expertise.
Practical experience with Databricks, Delta Tables, and modern data architectures.
Azure cloud stack knowledge including Data Factory and Event Hub.
Experience building scalable ETL/ELT pipelines and data integration.
Excellent English language skills.
Interest in AI-assisted development tools.

Responsibilities

Design and develop data solutions using Databricks, Python, and PySpark.
Build and optimize ETL/ELT pipelines for batch and streaming data processing.
Implement and maintain medallion architecture using Delta Tables.
Integrate data from multiple sources, including SFTP files, Delta Tables, and Azure Event Hub.
Work with Azure services such as Azure Data Factory to support end-to-end data workflows.
Utilize AI-powered development tools to improve code quality, testing, documentation, and productivity.

Skills

Python

PySpark

Databricks

Delta Tables

Azure Data Factory

Azure Event Hub

ETL/ELT pipelines

AI-assisted development tools

Advanced English

Tools

Databricks

Delta Tables

Azure Data Factory

Azure Event Hub

Job description

We are looking for a Senior Big Data Developer to join our team in building a modern data platform using Databricks and the Microsoft Azure ecosystem. In this role, you will be responsible for designing and developing scalable data solutions, implementing and optimizing ETL/ELT pipelines, and integrating data from multiple sources. If you are passionate about modern data engineering, AI-assisted development, and creating impactful data solutions,

Your tasks

Design and develop data solutions using Databricks, Python, and PySpark
Build and optimize ETL/ELT pipelines for batch and streaming data processing
Implement and maintain medallion architecture using Delta Tables
Integrate data from multiple sources, including SFTP files, Delta Tables, and Azure Event Hub
Work with Azure services such as Azure Data Factory to support end-to-end data workflows
Utilize AI-powered development tools to improve code quality, testing, documentation, and productivity

Requirements

At least 5 years of experience in a Data Engineer, Big Data Engineer, or similar role
Strong hands‑on experience with Python and PySpark
Proven experience with Databricks, Delta Tables, and modern data architectures
Practical knowledge of the Microsoft Azure ecosystem, including Azure Data Factory and Azure Event Hub
Experience building and maintaining scalable ETL/ELT pipelines
Advanced level of English
Interest in modern technologies and experience using AI‑assisted development tools in everyday work

Nice to have

Familiarity with Elasticsearch
Strong analytical skills and a proactive approach to solving complex data-related challenges

Job no. JOB-RK4EY

Sii ensures that all hiring decisions are made solely on the basis of qualifications and competence. We are committed to equal and fair treatment of all, regardless of legally protected characteristics. At Sii, we promote a diverse and inclusive work environment, in full compliance with applicable anti‑discrimination laws.

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