R Rohit Kumar Architect
High-Performance Analytics

Enterprise Power BI Consulting & Architecture

Transform sluggish, bloated dashboards into sub-second interactive analytics engines. Star schema design, advanced DAX optimization, and bulletproof Row-Level Security.

DAX & VertiPaq Tuning

Eliminate visual rendering timeouts by refactoring expensive iterators (FILTER, SUMX) and optimizing column cardinality to maximize in-memory compression.

Row-Level Security (RLS)

Dynamic security filters based on Entra ID user principal names (UPN) ensuring regional managers and executives only see authorized data rows.

Enterprise Gateway Clusters

High-availability clustered On-premises Data Gateways with load balancing to bridge hybrid on-premise SQL servers, Oracle, and SAP data sources.

Supercharge Your Executive Analytics

Connect with Principal Architect Rohit Kumar to audit your semantic data models and eliminate dashboard latency.

Book Performance Audit View Advisory Packages

High-Performance Power BI Data Modeling & DAX Optimization

Star Schema & Dimensional Modeling

Flat, wide tables and snowflake schemas destroy Power BI VertiPaq engine compression and cause sluggish visual rendering. We architect pure Star Schemas featuring dedicated dimension tables, integer surrogate keys, and lean fact tables that achieve 10x compression ratios and sub-second report response times.

DAX Formula Tuning & Measure Optimization

Inefficient DAX calculations (such as excessive `CALCULATE` nested within row contexts or non-filtered iterator functions) cause severe memory pressure. Using DAX Studio and Tabular Editor, we analyze query execution plans, optimize Storage Engine (SE) versus Formula Engine (FE) ratios, and eliminate bottlenecks.

Row-Level Security (RLS) & Governance

Enterprise reporting requires bulletproof data segregation. We implement dynamic Row-Level Security (RLS) and Object-Level Security (OLS) using `USERPRINCIPALNAME()` filtering mapped against Entra ID security groups, ensuring branch managers only view their region's operational data.

On-Premises Data Gateway High Availability

We design clustered On-premises Data Gateway environments with load balancing, automated failover, and ExpressRoute dedicated bandwidth channels to ensure scheduled enterprise data refreshes complete reliably without timeouts.

Enterprise Power BI Solution Deliverables

Executive KPI Portals

C-level executive dashboards with drill-through hierarchies, automated anomaly detection, and mobile-responsive layout for iPad and smartphones.

Microsoft Fabric & Lakehouse

DirectLake mode architecture over OneLake Delta parquet tables, eliminating data duplication and enabling real-time analytical reporting over petabyte-scale data.

Power BI Embedded

Seamless embedding into modern SharePoint intranets, custom React web applications, and customer portals with token-based authentication.

Advanced Power BI Architecture & DAX Optimization

As data volumes scale, standard Power BI reports often suffer from performance degradation. We specialize in transforming sluggish environments into high-speed analytical engines.

Star Schema & Modeling

We deprecate flattened, inefficient tables in favor of strict Star Schema architectures. Utilizing integer surrogate keys and lean dimension tables maximizes VertiPaq compression, resulting in sub-second query speeds even with massive fact tables.

DAX Query Performance

We analyze query execution plans to minimize Formula Engine bottlenecks. By optimizing CALCULATE, FILTER, and Iterator functions, we drive measurable improvements in report responsiveness for executive stakeholders.

Microsoft Fabric & Direct Lake Mode Optimization

Direct Lake on OneLake: Direct Lake mode allows Power BI models to analyze Delta Parquet tables directly from Microsoft Fabric OneLake without importing data or duplicating storage, delivering sub-second queries across multi-terabyte datasets.

Automated Workspace ALM: Deploy Power BI Deployment Pipelines linked to Azure DevOps repositories to manage report definitions (PBIP) with version control and automated testing.