Senior Power BI Developer

About the RoleWe're looking for an experienced Power BI Developer to join our BI/Data Analytics team, supporting a large-scale enterprise semantic model built on Microsoft Fabric and Snowflake. You'll work on a mission-critical reporting platform serving sales, labor, attendance, and financial reconciliation across the organization, with a strong focus on performance optimization, data modeling best practices, and scalable report development.Key ResponsibilitiesDesign, build, and maintain Power BI semantic models using TMDL and PBIP (Git-integrated) project format — no reliance on manual .pbix-only workflows.Develop and optimize DAX measures, calculated columns, hierarchies, and relationships across large (multi-GB, 80M+ row) fact tables.Implement and maintain incremental refresh policies (rolling window/incremental partitioning) to manage large historical datasets efficiently.Diagnose and resolve refresh failures, memory/capacity issues, and performance bottlenecks (VertiPaq Analyzer, DAX Studio, Fabric Capacity Metrics).Design and apply surrogate key strategies to reduce model size and improve query/relationship performance on high-cardinality columns.Build and maintain Power BI reports following established design/SSA standards (report chrome, slicers, drill-through, bookmarks, conditional formatting).Collaborate with data engineering teams on Snowflake/dbt pipelines feeding the semantic model; troubleshoot source-to-model data reconciliation issues.Manage deployments across DEV/PROD workspaces via deployment pipelines and Git-based version control (branching, PRs, code review).Use PowerShell / REST APIs (Enhanced Refresh API, XMLA endpoint) to automate refresh operations, monitor refresh history, and script recovery/reload procedures.Perform root cause analysis on data discrepancies, broken relationships, blank/missing values, and reporting anomalies; document findings clearly for stakeholders.Manage Row-Level Security (RLS), workspace/app permissions, and capacity (SKU) planning for Fabric/Premium.Partner with business stakeholders to translate requirements into scalable model and report designs; write clear documentation and user stories (Jira/Agile).Required Skills & Experience6+ years hands-on experience with Power BI (Desktop, Service, Premium/Fabric capacities).Strong proficiency in DAX and Power Query (M), including complex measures, time intelligence, and native query optimization.Deep understanding of semantic model design: star schema, relationships, cardinality, VertiPaq storage engine, and performance tuning techniques.Experience with incremental refresh, large fact table management, and memory/capacity troubleshooting in Premium/Fabric environments.Working knowledge of Snowflake (SQL, views, warehouses) and ideally dbt for source data transformations.Experience with Git-based Power BI development (PBIP/TMDL format), branching strategies, and pull request workflows.Familiarity with PowerShell and Power BI REST APIs for refresh automation and administration.Strong analytical and debugging skills — ability to trace issues from report visuals through DAX/relationships back to source data.Excellent communicationNice to HaveExperience with Microsoft Fabric (Lakehouse, Fabric Capacity Metrics, OneLake).Exposure to DAX Studio / Tabular Editor / VertiPaq Analyzer.Familiarity with Jira/Agile delivery processes.