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Hi, I’m Kalaiyarasee Narayanasamy, a Senior Data Engineer with 11+ years of experience designing and delivering scalable, enterprise-grade data platforms across Google Cloud Platform (GCP), AWS, and Snowflake. I specialize in building high-performance data pipelines, ELT frameworks, and Single Sources of Truth (SSOT) using BigQuery, Dataform, Airflow, Python, Dataflow, Vertex AI, and Looker Studio to empower analytics, reporting, and forecasting. I’ve led cross-functional teams in retail, finance, and logistics, delivering ML-ready datasets, data quality and monitoring solutions, and cost-optimization strategies. I enjoy turning complex business requirements into scalable data solutions, mentoring engineers, and collaborating with stakeholders to drive data-driven decisions across promotions, revenue, and operations.…Hi, I’m Kalaiyarasee Narayanasamy, a Senior Data Engineer with 11+ years of experience designing and delivering scalable, enterprise-grade data platforms across Google Cloud Platform (GCP), AWS, and Snowflake. I specialize in building high-performance data pipelines, ELT frameworks, and Single Sources of Truth (SSOT) using BigQuery, Dataform, Airflow, Python, Dataflow, Vertex AI, and Looker Studio to empower analytics, reporting, and forecasting. I’ve led cross-functional teams in retail, finance, and logistics, delivering ML-ready datasets, data quality and monitoring solutions, and cost-optimization strategies. I enjoy turning complex business requirements into scalable data solutions, mentoring engineers, and collaborating with stakeholders to drive data-driven decisions across promotions, revenue, and operations.

Kalaiyarasee Narayanasamy

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Hi, I’m Kalaiyarasee Narayanasamy, a Senior Data Engineer with 11+ years of experience designing and delivering scalable, enterprise-grade data platforms across Google Cloud Platform (GCP), AWS, and Snowflake. I specialize in building high-performance data pipelines, ELT frameworks, and Single Sources of Truth (SSOT) using BigQuery, Dataform, Airflow, Python, Dataflow, Vertex AI, and Looker Studio to empower analytics, reporting, and forecasting. I’ve led cross-functional teams in retail, finance, and logistics, delivering ML-ready datasets, data quality and monitoring solutions, and cost-optimization strategies. I enjoy turning complex business requirements into scalable data solutions, mentoring engineers, and collaborating with stakeholders to drive data-driven decisions across promotions, revenue, and operations.…Hi, I’m Kalaiyarasee Narayanasamy, a Senior Data Engineer with 11+ years of experience designing and delivering scalable, enterprise-grade data platforms across Google Cloud Platform (GCP), AWS, and Snowflake. I specialize in building high-performance data pipelines, ELT frameworks, and Single Sources of Truth (SSOT) using BigQuery, Dataform, Airflow, Python, Dataflow, Vertex AI, and Looker Studio to empower analytics, reporting, and forecasting. I’ve led cross-functional teams in retail, finance, and logistics, delivering ML-ready datasets, data quality and monitoring solutions, and cost-optimization strategies. I enjoy turning complex business requirements into scalable data solutions, mentoring engineers, and collaborating with stakeholders to drive data-driven decisions across promotions, revenue, and operations.

Available to hire

Hi, I’m Kalaiyarasee Narayanasamy, a Senior Data Engineer with 11+ years of experience designing and delivering scalable, enterprise-grade data platforms across Google Cloud Platform (GCP), AWS, and Snowflake. I specialize in building high-performance data pipelines, ELT frameworks, and Single Sources of Truth (SSOT) using BigQuery, Dataform, Airflow, Python, Dataflow, Vertex AI, and Looker Studio to empower analytics, reporting, and forecasting.

I’ve led cross-functional teams in retail, finance, and logistics, delivering ML-ready datasets, data quality and monitoring solutions, and cost-optimization strategies. I enjoy turning complex business requirements into scalable data solutions, mentoring engineers, and collaborating with stakeholders to drive data-driven decisions across promotions, revenue, and operations.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

English

Fluent

Work Experience

Data Engineer at 4WD Supacentre

July 1, 2023 - Present

Led architecture, design, and development of scalable enterprise data platforms on GCP using BigQuery, Dataform, Airflow, GCS, Workflows, Dataflow, Vertex AI, DataStream, and Looker Studio to support retail analytics, reporting, and forecasting. Managed end-to-end data engineering lifecycle including ingestion, transformation, orchestration, validation, monitoring, and delivery of analytics-ready datasets for finance, marketing, logistics, and data science teams. Migrated from Matillion to GCP Dataform, modularizing transformations for maintainability and performance. Built ingestion pipelines from multiple sales platforms, payment providers, logistics systems, and external sources, consolidating data into enterprise SSOT at key business levels and delivering dashboards for finance and operations.

Data Engineer at Nityo Infosys

February 1, 2022 - March 31, 2023

Collaborated with business teams to translate project requirements into technical objectives using Python and Snowflake; performed ETL tasks ensuring data integrity; developed automated data load mechanisms and error logging; created Snowflake objects (tables, views, stored procedures) and implemented Slowly Changing Dimensions (SCD) for key data; wrote complex SQL for business analysis and reporting; took complete ownership of deliverables and presented outputs to business stakeholders.

Technical Lead - Database at Macmillan Learning

December 1, 2020 - November 30, 2021

Analyzed complex database structures and provided insights to support business improvements. Built robust data pipelines using AWS Glue, AWS S3, AWS Athena, and AWS RDS; leveraged Athena for ad-hoc analysis from the data lake; documented data pipeline designs and technical specifications.

Associate at Cognizant Technology Solutions

June 1, 2015 - May 31, 2020

Engaged with clients to gather requirements, defined data mappings and transformation rules, and designed end-to-end data migration using SSIS from unstructured sources to relational tables. Developed and tested SSIS packages, performed data validation and cleansing, and optimized query performance; collaborated with customers and business users to align solutions with expectations.

Programmer Analyst at Cognizant Technology Solutions

July 1, 2013 - May 31, 2015

Contributed to writing database scripts and stored procedures in SQL Server, SSIS jobs for ETL, and data repository maintenance. Worked on data migration from legacy sources, performance tuning, and providing production support; collaborated with clients to deliver timely changes and enhancements.