Open to opportunities

Ch Ahsan

@chahsan

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Senior Data Engineer specializing in cloud-native data platforms, ETL/ELT, and scalable analytics solutions.

United States

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What I'm looking for

I seek a role building scalable cloud-native data platforms where I can lead ETL/ELT design, improve data quality/governance, mentor engineers, and drive business analytics.

I am a Senior Data Engineer with 11+ years designing and implementing large-scale, cloud-native data platforms using AWS, Azure, Snowflake, Databricks, and modern ETL/ELT frameworks. I architect resilient lakehouse and data warehouse solutions, optimize batch and streaming pipelines with Spark/Kafka, and enforce data governance, lineage, and security to deliver trusted analytics.

I have led migrations from on-prem to cloud, built reusable PySpark and SQL frameworks, implemented CI/CD and observability, and mentored engineering teams to improve delivery and reliability. My work has reduced processing time, improved query performance, and enabled near-real-time business insights for stakeholders.

Experience

Work history, roles, and key accomplishments

Current

Senior Data Engineer

Current

Enigma Technologies

Feb 2023 - Present (2 years 11 months)

Architected and implemented scalable cloud-native data pipelines and a Snowflake-based warehouse handling multi‑terabyte datasets, improving processing performance and reliability while leading migration of legacy on-prem systems to AWS.

Apache Airflow Databricks Snowflake AWS Glue Pyspark Delta Lake AWS Cloudwatch Data Governance

Data Engineer

Monte Carlo Data

Aug 2019 - Jan 2022 (2 years 5 months)

Developed ETL pipelines ingesting data into AWS S3 and Redshift, implemented data validation and reconciliation checks, and optimized SQL and storage to enhance analytics performance and reliability.

Python SQL AWS S3 Redshift Hadoop Hive Data Validation ETL Performance Tuning

Data Engineer

JDSAT

Nov 2017 - Jul 2019 (1 year 8 months)

Led design of a cross-cloud lakehouse on Databricks/Delta Lake and established Snowflake warehouse with RBAC and observability, improving query performance and compliance through governance and CI/CD practices.

Databricks Delta Lake Snowflake Apache Airflow AWS Glue CI CD Pyspark Monitoring Data Governance

Data Pipeline Engineer

4Catalyzer

May 2014 - Oct 2017 (3 years 5 months)

Designed and implemented data pipelines using Azure Data Factory and Databricks, built Spark-based transformations and dimensional models, and integrated Synapse with Power BI for automated reporting.