Senior ETL Developer - Cloud Data & AWS Expert

Sii Poland; Lublin; On-site; PLN 120,000 - 180,000; 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 is seeking a Senior ETL Developer to help cloud-transform a data-intensive analytical platform. You will design scalable architectures, modernize legacy components, and optimize ETL pipelines in AWS, ensuring performance, reliability, and cost-efficiency.

Collaborate with engineers, analysts, and QA teams to deliver high-quality software, enforce coding standards, and expand analytical capabilities with ML models and advanced SQL techniques.

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 tuning

Relational data modeling

Advanced SQL

English proficiency

Tools

SQL Server

SSIS

AWS Glue

AWS Lambda

Job description

Sii Poland is seeking a Senior ETL Developer to help cloud-transform a data-intensive analytical platform. You will design scalable architectures, modernize legacy components, and optimize ETL pipelines in AWS, ensuring performance, reliability, and cost-efficiency.

Collaborate with engineers, analysts, and QA teams to deliver high-quality software, enforce coding standards, and expand analytical capabilities with ML models and advanced SQL techniques.