Senior Tableau DeveloperInterview - 1 Video + 1 Final Onsite Interview.EMPLOYMENT TYPE: 12+ Months Contract with possible extension; Will need to obtain Public Trust.LOCATION DETAILS: Woodlawn, MD (5 days per week onsite)Key Required Skills - SME on Tableau BI Dashboard development, Data Management Analysis. Strong proficiency in Tableau Desktop and SQL (PostgreSQL preferred) and NoSQL database (Mongo DB preferred) querying.Position Description - Dashboard DevelopmentDevelop and enhance Tableau dashboards in enterprise environmentsModify and extend existing reporting solutionsUtilize advanced Tableau Desktop features (parameter actions, LOD expressions, relationships/joins, complex interactions, custom visualizations)Design intuitive, visually clean, and story-driven dashboards focused on user experienceTranslate loosely defined requirements into polished, functional dashboards with minimal oversightData Management & AnalysisWrite and optimize SQL queries, especially in PostgreSQL environmentsWork with messy or imperfect data; identify and resolve data quality issuesTroubleshoot and resolve Tableau performance issues (workbook optimization, calculations, filters, queries)Testing & Quality AssuranceDeliver accurate, thoroughly tested, and low-defect dashboardsPerform dashboard testing, validation, and bug fixing, preferably in Agile/Scrum environmentsFollow written technical requirements and implementation instructions with minimal reworkDocumentation & CommunicationDocument dashboard changes, testing results, and technical implementation detailsCommunicate proactively regarding risks, blockers, and implementation considerationsManage multiple enhancement requests, defects, and ad hoc analysis tasks efficiently