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Dheeraj User

@dheerajuser5

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Data Engineer at Greenfield Analytics who automated 20+ Airflow DAGs and built analytics-ready data marts.

India

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At Greenfield Analytics, I build and support ETL/ELT workflows that move data into analytics-ready marts. I automated 20+ Apache Airflow DAGs and developed dbt models across three data domains, with reported improvements to pipeline latency and reliability.

I also built Power BI KPI dashboards and Streamlit utilities, including an app for Excel data ingestion and validation. At ExcelR, I built a Power BI dashboard analyzing HighCloud Airlines flight records; in personal projects, I developed data pipelines for taxi and weather data and IPL ball-by-ball analytics.

Experience

Work history, roles, and key accomplishments

Current

Data Engineer Intern

Current

Greenfield Analytics

Apr 2026 - Present (6 months)

Built and supported end-to-end ETL/ELT workflows using Python, SQL, Snowflake, dbt, Apache Airflow, AWS S3, and PostgreSQL. Automated 20+ Airflow DAGs, implemented Medallion layers, and developed 30+ dbt models for BI consumption.

Python SQL Snowflake DBT Airflow S3 PostgreSQL ETL ELT Data Modeling Dimensional Modeling Star Schemas Medallion Architecture Jinja Power BI Streamlit Git CI CD Docker

Data Analyst Intern

ExcelR

Aug 2025 - Jan 2026 (5 months)

Built a Power BI dashboard analysing 110,848 HighCloud Airlines flight records from 2008–2013. Tracked airline KPIs including 3.3M miles and 7.1M passengers, with carrier and load-factor analysis.

Power BI Excel MySQL SQL Data Analysis Data Visualization KPI Tracking Dashboarding