Open to opportunities

Sathiyamurthy Sankaran

@sathiyamurthysankara

Message

I build cloud-scale real-time data platforms, analytics products, and GenAI-enabled KPI experiences.

United States

Message

What I'm looking for

I'm looking to build and modernize high-scale cloud data platforms, real-time analytics, and GenAI-enabled data products while leading teams and improving data quality, reliability, governance, and operational efficiency.

At Walmart, I architect the Store Operations analytics platform, powering analysis of store finances, associate productivity, picking efficiency, and delivery performance. I build batch and near-real-time pipelines, executive dashboards, and reporting infrastructure used by more than 9,000 daily users.

I modernized Teradata workloads onto Google BigQuery and moved orchestration from Automic to Apache Airflow, including Python utilities for BigQuery SQL-to-Spark SQL conversion. My data quality frameworks improved data quality by 30%, while an Operational Excellence dashboard helped reduce cloud infrastructure spend by 20% and cut daily job failures from over 1,000 to under 100.

I also enable conversational KPI querying through curated data, purpose-built prompts, and LLM evaluation frameworks. Across Walmart, Wipro, Tech Mahindra, and iGate, I’ve led ETL modernization, KPI reporting, data validation, and distributed engineering teams delivering reliable enterprise data products.

Experience

Work history, roles, and key accomplishments

Current

Staff Data Engineer

Current

Walmart

Aug 2018 - Present (8 years 1 month)

Architected and delivered the core Store Operations analytics platform, enabling multi-granular data analysis. Led platform modernization, GenAI-enabled conversational analytics, and cost optimization initiatives.

Apache Spark Kafka Airflow Python SQL BigQuery Tableau Looker Power BI Teradata GenAI Data Quality Cost Optimization

Module Lead

Wipro (Walmart US)

Aug 2014 - Aug 2018 (4 years)

Engineered ETL pipelines in Teradata SQL for store performance KPIs and automated daily personalized store metrics reports distributed to 6,000+ managers.

Teradata Python Power BI ETL Data Pipelines

Module Lead

Wipro (Cisco)

Nov 2009 - Aug 2014 (4 years 9 months)

Led an Oracle schema upgrade and re-engineered downstream ELT pipelines for KPI reporting. Designed and implemented a new database schema and optimized ETL frameworks.

Oracle ELT ETL Shell Scripting Database Design Disaster Recovery

Senior Software Engineer

Tech Mahindra (Telstra)

Dec 2007 - Nov 2009 (1 year 11 months)

Led a large-scale Teradata migration and architected new ETL pipelines for enhanced operational KPI insights in the telecom domain. Developed custom audit-trail scripts for data validation.

Teradata ETL Data Validation Root Cause Analysis Team Leadership

Software Engineer

iGate Global (Metro AG, Germany)

Apr 2005 - Dec 2007 (2 years 8 months)

Built ETL pipelines ingesting multi-source data to power reporting for Cash & Carry retail operations and store KPI analytics. Engineered automation scripts for data validation.

ETL Data Validation Automation Retail Analytics KPI Reporting