GOWRI NALLAMUTHU
Chennai
Summary
Accomplished Business Intelligence and Cloud Analytics Technical Lead with over 14 years of experience delivering enterprise-scale Business Intelligence, data analytics, and governed data solutions. Proven expertise in modernizing legacy BI ecosystems by transitioning IBM Cognos reporting platforms to cloud-based analytics solutions utilizing AWS QuickSight and Microsoft Power BI, facilitating interactive, scalable, and self-service reporting capabilities. Strong proficiency in Power BI development, including advanced DAX, data modeling, and the creation of executive dashboards that drive actionable business insights. Skilled in designing metadata-driven analytics architectures and optimizing data visualization performance while ensuring compliance with enterprise Data Governance standards, enabling secure self-service analytics through AWS services such as S3, Redshift, and QuickSight.
Overview
15
15
years of professional experience
1
1
Certification
Work History
Technical Lead – BI & Data Analytics
Wipro Technologies
06.2024 - Current
- Led BI modernization initiatives transitioning enterprise reporting from IBM Cognos to AWS QuickSight cloud analytics platform.
- Provided technical leadership for BI initiatives, guiding team members on data modeling, reporting standards, and best practices.
- Collaborated with data engineering teams to integrate datasets from AWS S3, Redshift, and enterprise data warehouses.
- Managed production support activities including issue resolution, root cause analysis, and continuous improvement initiatives.
- Supported Agile delivery processes through sprint planning, estimation, and stakeholder communication.
- Conducted performance tuning, caching optimization, and dataset refresh scheduling, improving dashboard load time.
- Standardized BI development processes across teams.
- Coordinated with cross-department teams like QA, DevOps, and Support to ensure seamless end-to-end software delivery process.
- Mentored junior developers through regular 1-on-1 meetings, providing guidance on best practices, coding standards, and career growth opportunities.
- Supported successful cloud analytics adoption initiatives.
Senior BI Developer
Wipro Technologies
06.2021 - 05.2023
- Designed and developed Power BI interactive dashboards with drill-through, slicers, and dynamic filtering to improve user experience.
- Created advanced DAX measures for KPI tracking including YoY growth, YTD, MTD, and variance analysis.
- Built optimized star schema data models to improve report performance and usability.
- Integrated data from SQL Server and Excel, ensuring data accuracy and consistency.
- Enabled drill-down and drill-through capabilities for detailed analysis by product, region, and customer.
- Reduced manual reporting effort by 20+ hours/month through automation.
- Collaborated with stakeholders to gather requirements and deliver actionable insights.
- Implemented Row-Level Security (RLS) to ensure secure data access.
- Improved report performance by 30–40% through query optimization, aggregations, and efficient data modeling.
Senior BI Developer
Wipro Technologies
06.2017 - 05.2021
- Led end-to-end BI reporting delivery including requirement analysis, development, migration, and BAU support for enterprise analytics solutions, ensuring alignment with Data Governance standards and reporting compliance requirements.
- Designed and implemented Framework Manager data models and developed complex dashboards and reports for DB & DC business domains while maintaining metadata consistency and standardized business definitions.
- Owned reporting architecture and ensured timely delivery through detailed data analysis, stakeholder collaboration, and enforcement of data governance policies including data ownership and stewardship alignment.
- Integrated Cognos reports into enterprise portals and supported QA, automation, and production deployments with proper documentation, lineage traceability, and impact analysis.
- Enabled reporting standardization by creating reusable base models, automated publishing frameworks, and governance controls to improve data quality, transparency, and delivery efficiency.
Associate BI Developer
Cognizant Technologies
04.2014 - 05.2017
- Strong expertise in Data Warehousing concepts, including OLTP and OLAP systems, with a solid understanding of data architecture and analytics workflows.
- Extensive experience in end-to-end BI development, including requirement analysis, design, development, testing, and delivering interactive dashboards aligned with business needs.
- Proficient in IBM Cognos BI Suite (Framework Manager, Report Studio, Analysis Studio, Query Studio, Cognos Connection) with working knowledge of JavaScript for report customization.
- Specialized in developing complex dashboards and reports, with hands-on experience in implementing Row-Level and Object-Level Security.
- Successfully contributed to migration projects ensuring a seamless transition and report validation.
- Experienced in creating comprehensive documentation including Technical Design Documents, Data Dictionary, and Unit Test Plans.
- Provided production support with quick turnaround for issue resolution and hotfix deployments, along with development of on-demand and scheduled reports.
BI Developer
HCL Technologies
08.2011 - 03.2014
- Designed Framework Manager models and developed enterprise reports using IBM Cognos 8.4.1.
- Built List, Crosstab, and Chart reports with cascading prompts supporting business analytics.
- Implemented report testing, formatting standards, and automated burst report distribution.
- Collaborated with global stakeholders to support sales performance reporting and analytics delivery.
- Conducted root cause analysis and resolved reporting issues ensuring operational stability.
Education
Master of Computer Applications (MCA) -
Bharathidasan University
01-2014
Bachelor of Computer Applications (BCA) - undefined
Bishop Heber College
01-2011
Skills
Data Modeling & Framework Manager
Data Governance
Dashboard & Report Development
Agile & Scrum Delivery
Cloud & AWS: AWS QuickSight, Amazon S3, Amazon Redshift, Cloud Analytics
Certification
AWS Cloud Practitioner
Timeline
Technical Lead – BI & Data Analytics
Wipro Technologies
06.2024 - Current
Senior BI Developer
Wipro Technologies
06.2021 - 05.2023
Senior BI Developer
Wipro Technologies
06.2017 - 05.2021
Associate BI Developer
Cognizant Technologies
04.2014 - 05.2017
BI Developer
HCL Technologies
08.2011 - 03.2014
Bachelor of Computer Applications (BCA) - undefined
Bishop Heber College
Master of Computer Applications (MCA) -
Bharathidasan University