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Sameen Qureshi

@sameenqureshi

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Data Engineer at 9d Technologies who built a BigQuery analytics chatbot for revenue and retention insights.

Pakistan

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At 9d Technologies, I built an LLM-powered analytics chatbot on BigQuery using OpenAI and Gemini APIs, so business stakeholders could query revenue, retention, and monetization metrics in plain English.

I also designed and maintained GCP data pipelines with Apache Airflow and built BigQuery warehouses for event data. I tuned partitioning, clustering, and SQL to reduce query costs and runtimes.

Previously, I worked on AWS data solutions at Blutech Consulting and optimized Python and SQL ETL pipelines at Medusa Distribution LLC. I also built web-scraping pipelines with Selenium and Beautiful Soup, and supported an SAP implementation project as an IT Intern at Oil and Gas Development Company Limited (OGDCL).

Experience

Work history, roles, and key accomplishments

Current

Data Engineer

Current

9d Technologies

Feb 2025 - Present (1 year 8 months)

Engineered an LLM-powered analytics chatbot on BigQuery and developed automated anomaly alerts using Gaussian Process Regression. Designed and maintained Apache Airflow pipelines and architected BigQuery data warehouses for 5+ TB of event data.

BigQuery Airflow Cloud Composer OpenAI Gemini Gaussian Process Regression Python SQL Looker GCP IAM And RBAC Data Governance Data Validation Partitioning Clustering Query Optimization

Data Engineer

Medusa Distribution LLC

Feb 2024 - Jan 2025 (11 months)

Optimized ETL pipelines in Python and SQL for data modeling and production reporting, processing 1M+ records per day. Automated error detection and correction, reducing pipeline downtime by 25%.

Python SQL ETL Data Modeling Pipeline Optimization error detection predictive modeling

Data Engineer

Blutech Consulting

Mar 2022 - Jan 2024 (1 year 10 months)

Implemented cloud data solutions on AWS using Redshift, Glue, Athena, S3, Step Functions, and QuickSight. Maintained ETL processes and big data pipelines for ingesting and transforming 100+ GB of data from 8+ sources.

Amazon Redshift AWS Glue Amazon Athena S3 AWS Step Functions Amazon Quicksight Teradata BTEQ FASTLOAD MultiLoad FastExport Selenium BeautifulSoup ETL Big Data Pipeline Optimization

IT Intern

Oil and Gas Development Company Limited

Jan 2021 - Dec 2021 (11 months)

Supported analysis, testing, and rollout of new and modified functions in an SAP implementation project. Programmed an employee record and ID card printing system using PHP, MySQL, Bootstrap, HTML, and CSS.

SAP PHP MySQL Bootstrap HTML CSS