
Power BI Developer
Onwelo
Warsaw, Poland • 23m ago • Remote
Senior
Remote
120 - 140 PLN/yr
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Quick Facts
Role: Power BI Developer
Description
Design, build, and continuously improve Power BI reports and interactive dashboards to support business decision-making. You will develop data models and a semantic layer, create DAX measures/calculations, and optimize data transformation processes in Power Query. The role includes integrating data from multiple sources, publishing and managing solutions in Power BI Service, and supporting testing, deployment, and ongoing BI maintenance.
Responsibilities
Design and create Power BI reports and interactive dashboards
Build data models and prepare the semantic layer for reporting
Write measures and calculations using DAX
Prepare and optimize data transformation processes with Power Query
Integrate data from various sources (databases, files, business systems)
Translate business requirements into analytics solutions
Optimize performance of reports, data models, and queries
Publish and manage assets in Power BI Service
Create and update technical and user documentation
Support testing, rollout, and maintenance of Business Intelligence solutions
Requirements
Minimum 4 years of experience as a Power BI Developer, BI Developer, or similar
Very good knowledge of Microsoft Power BI
Practical knowledge of DAX and Power Query
Experience designing data models, including star schema
Very good knowledge of SQL and relational databases
Experience with integrating data from multiple sources and preparing ETL/ELT processes
Knowledge of data visualization best practices and report design
Experience with Power BI Service, workspaces, roles, and permissions
Familiarity with Microsoft Azure (especially Azure Synapse, Azure Data Factory, or Microsoft Fabric—preferred)
Analytical thinking, independent problem-solving, and client collaboration
English at least B2
Benefits
Flexible working hours and remote work option
Opportunity to work on data and Business Intelligence projects for global clients
Up to 80% of promotions are internal
90% of management has a technical background
Access to internal training and development paths
Team events, company meetings, and Town Hall sessions
Support for personal branding
Life insurance and private medical care for you and your family
MultiSport card for health and fitness
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