Open to opportunities

Jemy Chen

@jemychen

Message

Data engineer specializing in ETL, PySpark, Airflow, and cloud data pipelines.

United States

Message

What I'm looking for

I seek hands-on roles building scalable ETL and data pipelines in collaborative, agile teams that value automation, data quality, and impactful analytics.

I am a data engineer with hands-on experience designing end-to-end ETL pipelines, building scalable Spark transformations, and automating workflows with Airflow to ensure high data quality and operational efficiency. I have implemented cloud-based solutions using AWS S3, HDFS, PostgreSQL, and PySpark to process multi-terabyte datasets and reduce manual reporting time significantly.

I collaborate closely with cross-functional teams in agile sprints to deliver data solutions that support business initiatives and improve alignment. My projects include AI-powered Streamlit applications and modular OpenAI agent architectures, demonstrating a blend of production data engineering, analytics, and practical machine-learning tooling.

Experience

Work history, roles, and key accomplishments

Data Engineer

Epsilon

Dec 2022 - Jun 2025 (2 years 6 months)

Designed end-to-end ETL pipelines and Airflow validation frameworks using AWS S3, PySpark, and PostgreSQL, ensuring 99% data quality while processing 3+ TB datasets and improving pipeline efficiency by 20%. Collaborated in bi-weekly agile sprints to deliver data solutions for 10+ initiatives and improved project alignment by 40%.

Pyspark Airflow AWS S3 PostgreSQL HDFS ETL Data Pipelines Data Validation

Data Analyst Intern

TalkPush

Jun 2019 - Oct 2019 (4 months)

Developed Python data extraction scripts and Power BI dashboards to automate campaign performance analytics, reducing manual reporting by 60+ hours monthly and improving client satisfaction by 30% within three months.

Python REST APIs Power BI Data Extraction SQL Data Visualization