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Girish Alwani

Data Engineer | System Design, PySpark, Python, AWS, GCP, Databricks, Airflow, NiFi, SQL, HIVE, Github, CI/CD,Gen AI, Agentic AI | Best Buy | 6+ years exp | Ex - Nike |

Bengaluru

6+ years of work experience

Best Buy
Feb 20251 y 7 moPresent

Bengaluru

​Led end-to-end cloud migration of legacy retail data assets to GCP across sales, inventory, and customer domains for 3+ business units. ​Designed and owned 5+ production data products across supply chain (PO, Sales Order), selling (Transactions, Order Fulfillment), and customer (Subscriptions, Loyalty) domains. ​Designing and building EcoPulse, a centralized data intelligence platform optimizing Scope 1, 2, and 3 emissions; presented the initiative at Best Buy's Global Product Conference. ​Architected high-throughput batch and real-time pipelines using PySpark, Airflow, Databricks, Delta Lake, BigQuery, and GCP Workflows, improving efficiency by 35%. ​Acted as Product Owner for the PO Change Report, reducing SLA breaches by 30%. ​Automated an RPA workflow using BigQuery and Cloud Functions (Python), saving 66 hours/month and $18M+/year. ​Serving as interim team lead for the India data engineering team, overseeing sprint planning and mentoring 3 junior engineers.
Nike
May 20222 y 9 moFeb 2025

Bengaluru

Built and owned 7+ mission-critical data products (PO, STO, PR) supporting Nike global e-commerce and retail analytics pipelines. ​Engineered ETL/ELT pipelines using Python, PySpark, Apache Airflow, SQL, Hive, and Databricks with Delta Lake, achieving 99.9% reliability. ​Designed a reusable Data Quality Framework adopted across 7+ data products, reducing data incidents by 25% via automated threshold monitoring and Slack alerts. ​Led zero-downtime migration of 50+ Airflow DAGs from v2.x to v3.x, serving as primary L3 support lead. ​Integrated data products with Apache Kafka event streaming and Slack webhooks for real-time failure notification. ​Optimized infrastructure and pipeline designs for cloud cost reductions while maintaining SLA compliance. ​Integrated product and e-commerce data to generate insights/dashboards for supply chain and merchandising leadership.
StatusNeo
Feb 20223 moMay 2022

India

Developed Apache NiFi data flows to ingest/transform data from heterogeneous sources across multiple file formats. ​Designed data flow models using Apache Hive queries and automated Hive table purging policies via shell scripting.
Wipro Limited
Sep 20201 y 5 moFeb 2022

Bengaluru

Delivered end-to-end data migration pipelines leveraging PySpark, SQL, Hive, Hadoop, and Python. ​Implemented SCD Type 2 and fact table load patterns using Talend ETL components following Kimball methodology. ​Developed Python automation scripts to streamline manual tasks and reduce error rates. ​Gathered and translated business requirements into ETL strategy, physical models, and pipeline architecture.
Freelance
Aug 20202 mosSep 2020

Jaipur, Rajasthan, India

Worked as a freelance data analyst for a local client to generate reports for the data provided and also worked on HTML, CSS, React.js to build interactive web interface for their website as per requirements.

Girish’s AI Stack

aistudio
aistudio
claude code
claude code
codex
codex

Education

Vellore Institute of Technology

Bachelor of Technology, Electronics and Communication

Vellore Institute of Technology

20164 yrs2020
St Edmund's School

SSC, Engineering Science

St Edmund's School

20142 yrs2016

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Headline

Data Engineer | System Design, PySpark, Python, AWS, GCP, Databricks, Airflow, NiFi, SQL, HIVE, Github, CI/CD,Gen AI, Agentic AI | Best Buy | 6+ years exp | Ex - Nike |

About

Senior Data Engineer with 6+ years of experience designing and delivering large-scale, distributed data pipelines and data warehouse solutions in the retail domain at Fortune 500 companies including Nike and Best Buy. Proven expertise in ETL and ELT pipeline development, cloud data migration, real-time streaming, data quality engineering, and dimensional data modeling. Delivered 35% improvement in pipeline processing efficiency, led zero-downtime migration of more than 50 Airflow DAGs, and drove $18M+ in annual cost savings through serverless pipeline automation. Skilled in CI/CD, test-driven development, and cross-functional team leadership including interim engineering lead responsibilities.

Location

Bengaluru

AI stack

aistudio

claude code

codex

Work experience

Data Engineer at Best Buy, Feb 2025 - Present · 1 y 7 mo, Bengaluru, ​Led end-to-end cloud migration of legacy retail data assets to GCP across sales, inventory, and customer domains for 3+ business units. ​Designed and owned 5+ production data products across supply chain (PO, Sales Order), selling (Transactions, Order Fulfillment), and customer (Subscriptions, Loyalty) domains. ​Designing and building EcoPulse, a centralized data intelligence platform optimizing Scope 1, 2, and 3 emissions; presented the initiative at Best Buy's Global Product Conference. ​Architected high-throughput batch and real-time pipelines using PySpark, Airflow, Databricks, Delta Lake, BigQuery, and GCP Workflows, improving efficiency by 35%. ​Acted as Product Owner for the PO Change Report, reducing SLA breaches by 30%. ​Automated an RPA workflow using BigQuery and Cloud Functions (Python), saving 66 hours/month and $18M+/year. ​Serving as interim team lead for the India data engineering team, overseeing sprint planning and mentoring 3 junior engineers.

Data Engineer at Nike, May 2022 - Feb 2025 · 2 y 9 mo, Bengaluru, Built and owned 7+ mission-critical data products (PO, STO, PR) supporting Nike global e-commerce and retail analytics pipelines. ​Engineered ETL/ELT pipelines using Python, PySpark, Apache Airflow, SQL, Hive, and Databricks with Delta Lake, achieving 99.9% reliability. ​Designed a reusable Data Quality Framework adopted across 7+ data products, reducing data incidents by 25% via automated threshold monitoring and Slack alerts. ​Led zero-downtime migration of 50+ Airflow DAGs from v2.x to v3.x, serving as primary L3 support lead. ​Integrated data products with Apache Kafka event streaming and Slack webhooks for real-time failure notification. ​Optimized infrastructure and pipeline designs for cloud cost reductions while maintaining SLA compliance. ​Integrated product and e-commerce data to generate insights/dashboards for supply chain and merchandising leadership.

Consultant (Data and AI) at StatusNeo, Feb 2022 - May 2022 · 3 mo, India, Developed Apache NiFi data flows to ingest/transform data from heterogeneous sources across multiple file formats. ​Designed data flow models using Apache Hive queries and automated Hive table purging policies via shell scripting.

Big Data Developer at Wipro Limited, Sep 2020 - Feb 2022 · 1 y 5 mo, Bengaluru, Delivered end-to-end data migration pipelines leveraging PySpark, SQL, Hive, Hadoop, and Python. ​Implemented SCD Type 2 and fact table load patterns using Talend ETL components following Kimball methodology. ​Developed Python automation scripts to streamline manual tasks and reduce error rates. ​Gathered and translated business requirements into ETL strategy, physical models, and pipeline architecture.

Data Analyst at Freelance, Aug 2020 - Sep 2020 · 2 mos, Jaipur, Rajasthan, India, Worked as a freelance data analyst for a local client to generate reports for the data provided and also worked on HTML, CSS, React.js to build interactive web interface for their website as per requirements.

Education

Bachelor of Technology, Electronics and Communication, Vellore Institute of Technology

SSC, Engineering Science, St Edmund's School