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Power BI Consultant (Freelance basis)

About The Company

GROPYUS is a technology-based construction company focused on building multi-story residential buildings. Thanks to its prefabricated building system with various design options, industrial offsite construction, and fully digitalized processes, the company manufactures aspirational, sustainable, and affordable homes using timber construction methods. GROPYUS is using scalable construction and manufacturing solutions to tap into a future market, boost Europe's strength in innovation, while also playing a substantial role in improving sustainability.

We're seeking a Power BI specialist to audit, optimize, and clean up our existing semantic model, data ingestion pipelines, and dashboards for a part time (50%) dedicated project from July to November 2026.

About the Role

Our Power BI environment has grown organically and needs professional optimization. We're looking for an experienced Power BI expert to drive a comprehensive cleanup and restructuring project. You'll audit our current semantic model for performance issues and design flaws, collaborate with our data engineers to optimize our data lake ingestion processes, and refactor our dashboards for consistency, usability, and efficiency while instilling best practices in our team for continued success after the project ends.

Key Responsibilities

Audit and document the current semantic model structure & relationships for consistency with our ontologies and other existing applications
Identify and eliminate redundant tables, views, columns, and measures within the MS Data Lake
Rewrite inefficient or problematic DAX formulas for clarity and speed
Identify problem areas on the Microsoft side of ingestion and collaborate with our data engineers for required modifications
Verify data accuracy and consistency across Power BI
Audit existing dashboards for consistency, usability, and performance and propose consolidation or redesign
Create & update documentation for semantic models and dashboard usage
Create guidance and best practices for Power BI usage

Required Skills & Experience

Minimum 3+ years of professional Power BI experience, including data model optimization and integration with various data stores within & outside the MS ecosystem
Ability to diagnose and fix complex formula issues
Proven ability to audit and refactor existing BI solutions
Strong documentation and communication skills
Experience with version control or change management in BI environments
Familiarity with Dagster, DBT, and Postgres