Senior Cloud ETL Engineer — AWS, SQL/SSIS, ML-ready

Sii Poland; Piła; On-site; PLN 200,000 - 260,000; Full time

Benefits offered by this job

Centre of internal trainings

Profit sharing

Medical care

Great Place to Work

Job summary

Sii Poland is seeking a Senior ETL Developer to drive the cloud transformation of a data-intensive analytical platform in Poland. You will design scalable architectures, modernize legacy components, and collaborate across engineers, analysts, and QA to deliver robust ETL solutions in AWS.

Ideal candidates have 5+ years of ETL experience, strong MS SQL Server and SSIS skills, and English proficiency. The role focuses on performance, reliability, and cost-efficiency in cloud environments and

Qualifications

• Minimum 5 years of experience in ETL development.
• Strong expertise in Microsoft SQL Server, including advanced query design and relational data modeling.
• Hands-on experience with SSIS for ETL pipeline design and optimization.
• Practical experience building ETL processes in AWS, including AWS Glue and AWS Lambda functions.
• Proven ability to optimize stored procedures and debug data flows across dependent components.
• Ability to enforce best practices in SQL coding standards and operational monitoring.
• Advanced level of English.

Responsibilities

• Contributing to the cloud transformation of a data-intensive analytical platform by designing scalable architectures and modernizing legacy components.
• Leading continuous technological evolution by proposing and implementing modern frameworks and architectural improvements.
• Expanding analytical and predictive capabilities by developing and integrating advanced statistical methods and machine learning models.
• Working closely with a team of software engineers and analysts to design and build software solutions that meet business needs.
• Ensuring adherence to team design and coding procedures and standards.

Skills

ETL development

SQL design

SQL performance

English proficiency

Cloud ETL

Data modeling

Tools

SSIS

AWS Glue

AWS Lambda

MS SQL Server

Job description

Sii Poland is seeking a Senior ETL Developer to drive the cloud transformation of a data-intensive analytical platform in Poland. You will design scalable architectures, modernize legacy components, and collaborate across engineers, analysts, and QA to deliver robust ETL solutions in AWS.

Ideal candidates have 5+ years of ETL experience, strong MS SQL Server and SSIS skills, and English proficiency. The role focuses on performance, reliability, and cost-efficiency in cloud environments and