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Rekha Madiyazagan

@rekhamadiyazagan

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Data Engineer with 5.5+ years delivering enterprise ETL, BI reporting, and data modelling.

United Kingdom

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What I'm looking for

I’m looking for a data engineering role where I can own end-to-end ETL and BI reporting, optimize pipelines for performance and reliability, and work with AWS/Snowflake to turn requirements into production-ready insights.

I’m an analytical, insight-driven data professional with 5.5+ years of experience delivering enterprise-grade ETL, BI reporting, and data modelling solutions across financial services and life sciences. I translate business requirements into scalable BI foundations while optimizing data pipelines and resolving production issues within SLA using Informatica, SQL/PLSQL, and cloud analytics platforms like AWS and Snowflake.

Across my roles, I’ve designed and improved ETL workflows integrating 10+ source systems, boosting data load performance by 30%, and reduced processing time by 25% while improving reliability. I’ve also built 15+ Power BI dashboards, developed Tableau analytics, and collaborated with DBAs to create aggregate tables and materialized views to reduce query response time—while ensuring high-quality delivery through testing and defect resolution.

Experience

Work history, roles, and key accomplishments

Data Engineer

Cognizant Technology Solutions

Mar 2018 - Jul 2021 (3 years 4 months)

Designed and optimized Informatica ETL workflows integrating 10+ source systems, improving data load performance by 30%. Built PL/SQL procedures and collaborated with DBAs on materialized views, reducing query response times and resolving production issues within SLA.

Informatica SSIS Pl SQL ETL Development Oracle SQL Unix Root Cause Analysis Materialized Views

ETL & BI Developer

Capgemini

Dec 2015 - Feb 2018 (2 years 2 months)

Developed Informatica ETL mappings and workflows, reducing processing time by 25% and improving data reliability. Built 15+ Power BI dashboards for Finance & Sales and supported UAT, integration testing, and defect resolution.

Informatica Sybase Autosys Power BI Data Modelling ETL Processes SQL UAT Testing