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

Sii Poland; Piła; On-site; PLN 180,000 - 260,000; Full time

Benefits offered by this job

Great Place to Work

Solid financial situation

Contracts with the biggest brands

Centre of internal trainings

Many experts you can learn from

Open and accessible management team

Profit sharing

Passion Sponsorship program

Regular integration events and trips

Comfortable and well‑equipped offices

MySii app

Medical care

Job summary

Sii Poland invites a Senior Big Data Developer to help build a modern data platform using Databricks and the Microsoft Azure ecosystem. You will design and develop scalable data solutions, and implement ETL/ELT pipelines to integrate data from multiple sources.

You will work with Python and PySpark, Delta Tables, and Azure Data Factory to deliver end-to-end data workflows. English proficiency is required, and a proactive, innovative approach to AI-assisted development is encouraged in a

Qualifications

• 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.

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

English

Tools

Elasticsearch

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.

Benefits For You

• Great Place to Work
• Solid financial situation
• Contracts with the biggest brands
• Centre of internal trainings
• Many experts you can learn from
• Open and accessible management team
• Profit sharing
• Passion Sponsorship program
• Regular integration events and trips
• Comfortable and well‑equipped offices
• MySii app
• Medical care