Power BI Optimization Consultant / Freelance Contractor
About The Position
VISASQ/COLEMAN is seeking an experienced Power BI Optimization Consultant for a short-term, part-time/hourly consulting engagement. This role focuses on optimizing large, complex Power BI semantic models, improving refresh reliability, reducing model size, and strengthening long-term model performance. This is not a front-end dashboard design role, but rather requires strong back-end Power BI architecture, semantic model optimization, DAX/M, SQL, VertiPaq, and data modeling expertise. The project involves supporting a focused review and improvement of several business-critical Power BI models used for internal reporting, finance-related workflows, and operational analytics, with the goal of enhancing model performance, refresh reliability, scalability, and long-term maintainability within the current Power BI environment.
Requirements
- Proven experience optimizing large-scale Power BI semantic models
- Strong understanding of Power BI model architecture, DAX, M query, VertiPaq, and query folding
- Experience auditing complex or legacy Power BI environments
- Practical knowledge of star schema design and fact/dimension modeling
- Experience improving refresh reliability, model performance, and maintainability
- Ability to work within Power BI Pro constraints without relying on Premium capacity as the primary solution
- Strong communication skills and ability to explain technical recommendations clearly
Nice To Haves
- Experience working with large, highly utilized Power BI models supporting multiple downstream reports
- Experience identifying unused columns, duplicate tables, inefficient queries, and unnecessary data load
- Familiarity with thin reports or reports connected through Power BI Service/live datasets
- SQL Server view design or database-side optimization experience
- Foundational knowledge of data warehouse design
- Power BI governance or workspace structure experience
- Microsoft PL-300 certification
- Prior freelance, consulting, or Microsoft Partner experience
Responsibilities
- Audit large and complex Power BI semantic models to identify opportunities for performance improvement
- Evaluate model structure, table relationships, data volume, and overall semantic model design
- Identify opportunities to reduce model size, improve refresh reliability, and streamline ongoing maintenance
- Recommend and support model optimization strategies within a Power BI Pro environment
- Support star schema redesign, normalization, and fact/dimension table separation where appropriate
- Review SQL, DAX, M query, query folding, and Power BI-side performance considerations
- Use tools such as DAX Studio, Measure Killer, and Tabular Editor to analyze and improve model performance
- Provide clear documentation, recommendations, and handover guidance for the internal team
Benefits
- Flexible structure based on consultant availability, proposed approach, and project scope
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What This Job Offers
Job Type
Part-time
Career Level
Mid Level
Education Level
No Education Listed
