SANDEEP KUMAR DAS
Kolkata
Summary
Accomplished BI Analyst with 6 years of experience delivering enterprise-scale business intelligence solutions using Tableau and Power BI across sectors such as insurance, healthcare, and finance. Expertise in data modeling, dashboard development, and validation, utilizing technologies like Snowflake and Azure. Experienced in SQL, Power Query, and DAX, with a strong focus on optimizing performance and managing the full BI lifecycle in Agile environments.
Overview
7
7
Certifications
6
6
years of professional experience
Work History
Data Analyst
Cognizant Technology Solutions Pvt. Ltd.
07.2025 - Current
- Developed Tableau dashboards for sales and distribution tracking, giving business teams clear visibility into agent performance and premium movement, helping them take quicker decisions.
- Performed SQL-based validation between Snowflake and Tableau, ensuring high data accuracy for financial and policy reporting, improving trust in dashboards.
- Assisted sales and marketing teams in identifying underperforming areas and trends, supporting better planning and performance improvement.
- Automated Tableau Server refreshes and email subscriptions, enabling timely and consistent reporting for leadership without manual effort.
- Conducted functional testing, ensuring dashboards were business-ready and reducing rework after release.
- Proactively resolved platform issues and improved performance by troubleshooting data refresh failures.
- Enabled sales teams to track agent-wise premium contribution and distribution trends through consolidated dashboards, improving visibility across business channels.
- Strengthened reporting reliability by validating Tableau outputs against Snowflake data, reducing data mismatches in financial and policy metrics.
Senior Tableau Developer
IBM India Pvt. Ltd.
05.2022 - 07.2025
- Developed enterprise dashboards for manufacturing, supply chain, and sales performance tracking.
- Designed advanced visualizations using LOD expressions, parameters, dynamic sets, and table calculations.
- Validated data against source systems, improving data reliability and stakeholder confidence.
- Utilized SPSS Modeler and SQL (DB2) to extract, transform, and load data from multiple sources, ensuring clean and reliable datasets for reporting.
- Managed Tableau Server operations: publishing, extract scheduling, performance monitoring.
- Implemented row-level security and user access controls on Tableau Server to ensure role-based data visibility.
- Tuned dashboard performance by optimizing queries, extracts, and calculations.
- Enabled leadership to identify operational inefficiencies and performance gaps.
- Improved report adoption through intuitive and responsive dashboards.
Power BI Developer
IBM India Pvt. Ltd.
05.2022 - 07.2025
- Developed Power BI dashboards to track patient care and financial metrics, providing business teams with centralized visibility into key KPIs.
- Built data models and created DAX measures to support accurate and consistent business calculations across reports.
- Transformed and integrated data from multiple sources using Power Query and Azure Data Lake (ADLS).
- Enabled secure data access using Azure AD and Row-Level Security (RLS), ensuring controlled data visibility across users.
- Delivered ad-hoc insights to stakeholders, supporting operational improvements and decision-making.
- Improved operational efficiency by ~20%.
- Increased adoption of data-driven decisions by ~15%.
BI Analyst (Power BI)
Accenture Solutions Pvt. Ltd.
11.2017 - 06.2020
- Built Power BI dashboards to track loan portfolio performance, lease metrics, and financial KPIs for business users.
- Integrated data from Azure SQL and multiple sources to create unified and reliable reporting datasets.
- Developed DAX measures and calculations to define key financial metrics and ensure consistent reporting logic.
- Performed data transformation and cleansing using Power Query to prepare datasets for reporting.
- Implemented Row-Level Security (RLS) to control data access based on user roles and regions.
- Improved reporting accuracy and decision-making efficiency for finance teams.
- Reduced manual reporting effort through automation.
Tableau Developer
Accenture Solutions Pvt. Ltd.
11.2017 - 06.2020
- Built interactive Tableau dashboards for ITSM metrics using SAP and ServiceNow data, enabling improved visibility into ticket volumes, SLA adherence, and service performance.
- Designed dashboards for incident lifecycle tracking (Received → Resolved), enhancing visibility in issue management and facilitating SLA compliance.
- Integrated and blended data from multiple sources using custom SQL and data modelling techniques, creating a unified reporting layer for analysis.
- Applied advanced calculations and filtering for detailed analysis.
- Optimized dashboards through extract tuning and context filters, improving load times and user experience.
- Enhanced visibility of IT operations and SLA adherence by implementing reporting tools.
- Facilitated recognition of recurring operational bottlenecks through data analysis.
Education
MBA - Business Analytics
Symbiosis Centre for Management and Human Resource Development
Pune01-2022
B.Tech - Civil Engineering
Karunya Institute of Technology and Sciences
Coimbatore01-2017
Skills
Data analysis
Data visualization
Data visualization and presentations
ETL and data modeling
System optimization
Enterprise business intelligence
Security governance
Enterprise business intelligence
Accomplishments
- IBM Knowledge Services: Knowledge Sharing Champion, Q2 2022
- National Runner-up: Operational Challenge’21 – BIM Trichy
- National Finalist: Data Visualization Competition’21 – GIM Goa
- National Finalist: Supply Chain Case Challenge’21 – SCMHRD Pune
- Accenture Pinnacle Award: FY19 (Q1 & Q2)
Certification
PL-300 certification prep: Microsoft Power BI Data Analyst, Udemy, May 2026
Timeline
Data Analyst
Cognizant Technology Solutions Pvt. Ltd.
07.2025 - Current
Senior Tableau Developer
IBM India Pvt. Ltd.
05.2022 - 07.2025
Power BI Developer
IBM India Pvt. Ltd.
05.2022 - 07.2025
BI Analyst (Power BI)
Accenture Solutions Pvt. Ltd.
11.2017 - 06.2020
Tableau Developer
Accenture Solutions Pvt. Ltd.
11.2017 - 06.2020
B.Tech - Civil Engineering
Karunya Institute of Technology and Sciences
MBA - Business Analytics
Symbiosis Centre for Management and Human Resource Development