Senior Power BI Developer(Tableau)

Job Title: Senior Power BI Developer (Tableau Experience Mandatory)

Location: Philadelphia, PA

Tax Term: W2 / C2C

Job Type: Contract

Duration: Long-Term Contract

Job Description:

We are seeking a Senior Power BI Developer with strong hands-on experience in Power BI and Tableau to design, develop, and maintain reporting solutions for operational and executive audiences. The candidate must have a minimum of 5+ years of recent Tableau experience. The ideal candidate will have strong SQL skills, experience integrating multiple data sources, data normalization and transformation experience using Python or similar scripting languages, and a strong understanding of data visualization and dashboard design best practices.

Minimum 5+ years of recent experience in Tableau is mandatory.

Roles & Responsibilities

• Design, develop, and maintain reports and dashboards in Tableau and Power BI for operational and executive audiences.
• Write and optimize complex SQL queries for data extraction, aggregation, joins across large datasets, and performance tuning.
• Connect and integrate multiple data sources (databases, APIs, flat files, enterprise platforms) into unified reporting datasets.
• Build and maintain scripted data normalization and transformation pipelines (e.g., Python) to standardize, cleanse, and reconcile data from disparate systems.
• Aggregate data across domains to produce consistent, reliable metrics and KPIs.
• Apply data visualization best practices to make complex data intuitive right chart for the right story, clean layouts, drill-down paths.
• Partner with business and technology stakeholders to gather reporting requirements and translate them into scalable reporting products.
• Automate recurring manual reporting processes to improve speed, consistency, and scalability.
• Validate data quality and investigate discrepancies across source systems; document data lineage and reporting logic.
• Develop complex SQL queries using joins, aggregations, window functions, and query optimization techniques.
• Build dashboards and reporting solutions using Tableau and Power BI.
• Aggregate data and connect multiple data sources into consolidated reporting datasets.
• Develop script-based data normalization and transformation processes using Python or similar technologies.
• Apply data visualization principles and dashboard design best practices.
• Work with stakeholders to translate business questions into reporting requirements.
• Maintain strong attention to detail and commitment to data accuracy.

Required Skills

• 5+ years of recent Tableau experience Mandatory
• Tableau
• Power BI
• Strong SQL
• Complex SQL Queries
• SQL Joins
• SQL Aggregations
• Window Functions
• SQL Query Optimization
• Data Visualization
• Dashboard Development
• Multiple Data Source Integration
• Data Aggregation
• Data Normalization
• Data Transformation
• Python or similar scripting language
• Data Quality Validation
• Data Lineage
• KPI Development
• Reporting Automation
• Business Requirements Gathering

Qualifications

• 5+ years of recent hands-on experience with Tableau is mandatory.
• Strong hands-on experience developing dashboards and reports using Tableau and Power BI.
• Strong SQL development experience with complex joins, aggregations, window functions, and performance tuning.
• Experience integrating databases, APIs, flat files, and enterprise platforms into consolidated reporting datasets.
• Experience with Python or similar scripting languages for data normalization and transformation.
• Strong understanding of data visualization principles and dashboard design.
• Experience translating business requirements into scalable reporting solutions.
• Strong data quality, analytical, and problem-solving skills.
• Excellent attention to detail and commitment to data accuracy.
• Strong communication and stakeholder collaboration skills.