Open to opportunities

Tejeswar Raju Vempalli

@tejeswarrajuvempalli

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Senior Data Engineer specializing in cloud-native ETL, analytics platforms, and scalable pipelines.

United States

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What I'm looking for

I seek a hands-on senior data engineering role building scalable cloud data platforms, with emphasis on automation, governance, and cross-functional collaboration to deliver analytics and ML-ready data.

I am a Senior Data Engineer with 5+ years of experience designing and operating high-volume data pipelines and cloud-native ETL/ELT workflows across healthcare and financial services. I have led large migrations to AWS and GCP, built Databricks and BigQuery-based solutions, and implemented Medallion, star and snowflake schemas to enable analytics and ML use cases.

I deliver measurable results—improving query performance by 40%, reducing costs by 25%, processing 2+ TB daily, and accelerating decision-making via self-service analytics. I mentor junior engineers, implement automated CI/CD and governance, and translate business needs into reliable, compliant, production-ready data platforms.

Experience

Work history, roles, and key accomplishments

Current

Senior Data Engineer

Current

Clinical Health Network Transformation

Aug 2023 - Present (2 years 4 months)

Led migration of a 20TB+ Teradata warehouse to BigQuery, boosting query performance by 40% and cutting infrastructure costs by 25%; built a GCP medallion data lake and optimized ETL to reduce processing latency by 30%.

BigQuery Databricks Pyspark Apache Airflow Vertex AI DBT Data Migration Data Governance

Senior Data Engineer

Pacific Life

Oct 2022 - Aug 2023 (10 months)

Led migration of on-prem Hadoop to GCP, improving data processing efficiency by 30% and built Databricks/PySpark ETL pipelines that reduced processing times by 25% and increased reliability via Pub/Sub ingestion.

Databricks Pyspark GCP BigQuery Dataflow Pub Sub Cloud Composer Fivetran

Data Engineer

Cognizant

Sep 2018 - Aug 2021 (2 years 11 months)

Built and optimized terabyte-scale PySpark jobs on AWS EMR, improving processing speed by 50%, and implemented real-time Spark Streaming and serverless Lambda solutions to streamline ETL into Redshift.

Pyspark AWS Glue Lambda Redshift Pandas Tableau

Education

Degrees, certifications, and relevant coursework

Rivier University

Master of Science, Computer Science

2021 - 2023

Completed a Master of Science in Computer Science with coursework and projects focused on data engineering, cloud platforms, and machine learning.

Anna University

Bachelor of Technology, Electronics and Communication Engineering

2016 - 2020

Completed a Bachelor of Technology in Electronics and Communication Engineering with foundation in signals, systems, and embedded technologies relevant to data systems.