Senior Data Engineer (Part-time)

We are looking for a Senior Data Engineer to join our growing Data Team and collaborate with top-notch experts in the field!   

In this role, you will work across multiple client projects spanning different domains and industries. You’ll be involved in end-to-end data initiatives — from building ETL/ELT pipelines and designing data models to setting up and evolving modern data warehouses. Depending on your interests, you may also take part in requirements gathering, customer collaboration, and dashboard development. 

This position starts part-time, with an opportunity to transition into a full-time role. 

Ready to make your mark on impactful data projects? 

You are a great fit if you have: 

• 4+ years of experience as a Data Engineer, Data Warehouse Developer, or SQL Developer
• Very strong SQL skills
• Solid experience with dimensional data modeling
• Hands-on experience with Google Cloud Platform, including building data pipelines
• Experience with dbt, Airbyte, and Git is a strong plus
• Excellent English skills, both written and spoken
• An analytical mindset and attention to detail
• Ability and willingness to communicate directly with customers to clarify requirements and design solutions
• Located in Poland and ready to work on a B2B contract
• Willingness for occasional travel to Estonia  

What you’ll be doing: 

• Developing and maintaining cloud-based data warehouses
• Working in a modern agile development environment together with other Helmes team members
• Designing and implementing ETL/ELT pipelines, primarily using Snowflake and GUI-based tools
• Creating, implementing, and refining data models, including defining edge cases
• Participating in customer meetings, gathering requirements, and proposing data solutions (if you’re interested)
• Building data visualizations using tools such as Power BI and Tableau (if you’re interested) 

 What’s in it for you? 

• Opportunity to work with interesting datasets, diverse clients, and challenging international projects
• Exposure to Google Cloud, AWS, Azure, and on-premise solutions
• A chance to work with Python, scripting, and both code-based and GUI-based ETL tools
• High level of autonomy and ownership of your work
• Support from an experienced mentor who will guide your development and provide regular feedback
• Minimal bureaucracy and a friendly, agile team culture
• Hybrid work model with flexibility to fit your lifestyle 

What to expect