Dhiraj is currently unavailable
Dhiraj Mahajan
Verified Expert in Engineering
Data Visualization Developer
Pune, Maharashtra, India
Toptal member since December 31, 2025
Bio
Dhiraj is an experienced BI and Tableau developer with 6+ years of expertise in designing scalable dashboards, optimizing data models, and delivering actionable insights. He has proven experience across EV infrastructure, tax, and enterprise analytics. Dhiraj is skilled in Tableau Desktop, Tableau Server, Microsoft Power BI, and SQL.
Portfolio
InfoBean
Data Visualization, Data Analysis, Data Modeling, Excel 2010...
Softweb Solutions
Tableau Desktop, Tableau Server, Tableau Prep Flow, Power Pivot...
Deloitte
Tableau Desktop, Tableau Server, Excel 2010, Data Modeling, Data Analysis...
Experience
- Tableau Desktop - 6 years
- Data Visualization - 5 years
- Tableau Server - 4 years
- Power BI Desktop - 4 years
- Tableau Prep Flow - 4 years
- SQL - 3 years
- Power Query - 3 years
- Excel 2010 - 2 years
Preferred Environment
Power BI Desktop, Tableau Desktop, Tableau Server, SQL, Data Visualization, Microsoft Power BI, Data Analysis, Data Modeling, Power Query, DAX, Business Intelligence (BI)
The most amazing...
...project I've worked on involved delivering high-impact analytics by converting complex SQL datasets into executive-ready Tableau dashboards.
Work Experience
Senior Software Engineer
2025 - PRESENT
InfoBean
- Developed an interactive revenue dashboard in Tableau using insurance data to track Top-N and Bottom-N customers, analyzing credit, debit, and net revenue changes to support data-driven client decisions.
- Designed SQL queries and data models, improving report performance and load times by 40% across multiple enterprise datasets.
- Delivered interactive Power BI and Tableau dashboards that improved executive decision-making and reduced manual reporting effort by 35%.
- Collaborated with cross-functional stakeholders to translate complex business requirements into scalable BI solutions, increasing user adoption by 30%.
Technologies: Data Visualization, Data Analysis, Data Modeling, Excel 2010, Microsoft Power BI, Power BI Desktop, DAX, Pandas, Tableau, SQL, Business Intelligence (BI)
Senior Technical Analyst
2023 - 2025
Softweb Solutions
- Developed advanced Tableau dashboards for EV charging infrastructure, tracking installations, stall usage, and operational efficiency. Designed SAP against mobile app adoption dashboards.
- Supported business reviews by providing ad-hoc analysis and insight summaries for operational and management meetings. Enhanced dashboard performance by optimizing calculations, extracts, and data refresh strategies.
- Improved dashboard adoption by applying intuitive layouts, optimized filters, and user-focused visual design. Validated data accuracy by implementing reconciliation checks between source systems and Tableau outputs.
- Collaborated with business stakeholders to define KPIs and translate financial requirements into actionable Tableau visualizations.
- Improved financial reporting accuracy and usability by optimizing Tableau calculations, layouts, and dashboard performance. Helped the client in data validations.
Technologies: Tableau Desktop, Tableau Server, Tableau Prep Flow, Power Pivot, Power BI Desktop, Excel 2010, Snowflake, Business Intelligence (BI)
Senior Executive
2022 - 2023
Deloitte
- Designed and developed a Tax Revenue Dashboard in Tableau to track key financial KPIs, including revenue, gross margin percentage, and utilization percentage.
- Performed whitespace analysis to identify growth opportunities and delivered actionable insights through Agile-driven analytics solutions.
- Used level of detail (LOD) expressions to correctly calculate margin and utilization at partner, manager, and engagement levels for improving financial visibility and data accuracy.
- Designed a star-schema data model combining timesheets, billing, revenue, and engagement master data. Handled many-to-one relationships between engagements and clients to ensure accurate margin and utilization calculations.
- Integrated MTD/QTD/YTD trends and period comparisons to support financial reviews and partner-level decision-making.
- Enabled resource utilization analysis by monitoring billable vs non-billable hours across partners, managers, and engagement teams.
Technologies: Tableau Desktop, Tableau Server, Excel 2010, Data Modeling, Data Analysis, Business Intelligence (BI)
Tableau Developer
2019 - 2022
Bravezone Softech Pvt
- Designed sales, supply chain, and logistics dashboards with year-over-year (YoY) and year-to-date (YTD) metrics to track performance trends and business growth.
- Automated data preparation and reporting workflows, reducing manual effort and improving delivery timelines. Delivered client-facing Tableau dashboards and insights that improved logistics visibility and sales forecasting accuracy.
- Designed and developed sales, finance, and supply chain dashboards in Tableau, providing leadership with real-time visibility into revenue, orders, and fulfillment performance.
- Implemented YoY, YTD, previous year-to-date (PYTD), and trend-based KPIs to track business growth and seasonal performance across regions and product categories.
Technologies: Tableau Desktop, Excel 2010, Tableau Server, Tableau
Experience
EV Infrastructure Analytics Dashboard
This project involved building an interactive Tableau dashboard to monitor the performance of EV charging infrastructure and track station installations, stall utilization, session duration, and usage by location. I enabled leadership to identify underutilized assets, optimize rollout planning, and improve operational efficiency through KPI-driven insights.
Banking and Financial Performance Analytics
Built end-to-end Power BI and Tableau dashboards to track banking KPIs, including deposits, loan performance, NPA trends, and branch-wise profitability. Optimized SQL queries and data models to enable faster insights for risk and operations teams.
Retail Sales and Customer Behavior Analytics
Developed interactive dashboards to analyze sales performance, customer segmentation, product trends, and regional profitability. Leveraged advanced SQL and data modeling to uncover buying patterns and support data-driven pricing and inventory decisions.
Education
2012 - 2016
Bachelor's Degree in Chemical Engineering
North Maharashtra University - Jalgaon, India
Skills
Libraries/APIs
Pandas
Tools
Tableau Desktop, Tableau, Excel 2010, Power Pivot, Power BI Desktop, Tableau Prep Flow, Power Query, Microsoft Power BI
Languages
SQL, Snowflake
Paradigms
Business Intelligence (BI)
Frameworks
ADF
Other
Tableau Server, Data Visualization, Data Modeling, Data Analysis, Chemical Engineering, DAX
Collaboration That Works
How to Work with Toptal
Toptal matches you directly with global industry experts from our network in hours—not weeks or months.
1
Share your needs
Discuss your requirements and refine your scope in a call with a Toptal domain expert.
2
Choose your talent
Get a short list of expertly matched talent within 24 hours to review, interview, and choose from.
3
Start your risk-free talent trial
Work with your chosen talent on a trial basis for up to two weeks. Pay only if you decide to hire them.
Top talent is in high demand.
Start hiring