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revathi Selvaraj

@revathiselvaraj

Data Analyst at Cognizant who automated reporting to cut turnaround time by 30–40%, now developing agentic ETL automation.

United States

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At Cognizant Technology Solutions, I designed ETL workflows in Informatica PowerCenter and SSIS and built Power BI, Tableau, and Excel dashboards for business stakeholders. I automated recurring reporting with Python and SQL, cutting turnaround time by 30–40%.

At Infosys Ltd, I engineered data pipelines and developed reporting solutions using SQL, Python, Informatica, SSIS, and SSRS. My work improved data-processing efficiency and reduced report-generation time.

I'm currently developing an agentic ETL framework that brings LangGraph and Azure OpenAI agents together to detect schema drift, diagnose pipeline failures, and recommend data-quality fixes while Informatica and Azure Data Factory handle data movement.

I also built a movie recommendation system for my MSc dissertation at Middlesex University Dubai, using collaborative and content-based filtering and evaluating its performance with RMSE, precision, and recall.

Experience

Work history, roles, and key accomplishments

Senior Data Analyst

Cognizant Technology Solutions

Nov 2018 - Feb 2022 (3 years 3 months)

Designed and optimized ETL workflows in Informatica PowerCenter and SSIS, automating data pipelines and improving processing efficiency. Built interactive dashboards in Power BI, Tableau, and Excel, and automated reporting with Python and SQL, cutting turnaround time by 30-40%.

Informatica PowerCenter SSIS Power BI Tableau Excel Python SQL Data Profiling Data Cleaning Data Reconciliation Performance Optimization

Data Analyst

Infosys Ltd

Aug 2017 - Nov 2018 (1 year 3 months)

Engineered and automated data pipelines using SQL, Python, and Informatica, improving data-processing efficiency by ~15% and reducing report-generation time by ~20%. Designed data models, ETL workflows, and dashboards on SQL Server, Power BI, and Tableau.

SQL Python Informatica SQL Server Power BI Tableau Pandas NumPy Data Modeling ETL Git

BI / ETL Developer

Infosys Ltd

Jul 2015 - Jul 2017 (2 years)

Developed and automated reporting workflows with SQL, SSIS, and SSRS, reducing report-generation time by ~50% and minimizing recurring data incidents. Designed and maintained data models, ETL processes, and dashboards using SQL Server and Power Pivot.