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Tejaswini Nomula

@tejaswininomula

Data Scientist, AI at Elevance Health building healthcare RAG systems that improved clinical query accuracy by 32%.

At Elevance Health, I engineered a healthcare RAG pipeline with Python, LangChain, and vector search, integrating HL7 and FHIR datasets to improve clinical query accuracy by 32%. I also fine-tuned transformer models on de-identified claims data for patient risk stratification.

Previously, I developed data pipelines at Informative Web Solutions using PySpark, SQL, and Apache Airflow. My work included Snowflake data models and PostgreSQL and MongoDB query optimization; I also built a RAG-based clinical assistant and claims fraud detection models in academic projects.

Experience

Work history, roles, and key accomplishments

Current

Data Scientist, AI

Current

Elevance Health

Jan 2026 - Present (9 months)

Engineered a healthcare RAG pipeline using Python, LangChain, and vector search, improving clinical query accuracy by 32%. Fine-tuned transformer models on de-identified claims data, improving patient risk stratification accuracy by 27% while ensuring HIPAA compliance.

Python Lang Chain Vector Search Hugging Face Transformers Apache Spark Airflow AWS Sagemaker Docker CI CD MLFlow PHI Masking Data De Identification HIPAA HL7 FHIR

Data Engineer

Informative Web Solutions

Aug 2020 - Jul 2024 (3 years 11 months)

Developed scalable ETL pipelines using PySpark and SQL, processing over 1M transactional records and reducing execution time by 35%. Designed data models and implemented ELT workflows in Snowflake, improving query performance by 28%.

PySpark SQL Snowflake Airflow Apache Spark Python PostgreSQL MongoDB REST APIs Data Quality

Education

Degrees, certifications, and relevant coursework

Youngstown State University

Master of Computing and Information Systems, Computing and Information Systems

2024 -

Pursuing a Master of Computing and Information Systems at Youngstown State University, expected to complete in May 2026.

Ponnaiyah Ramajayam Institute of Science and Technology

Bachelor of Technology, Electronics and Communication Engineering

2018 - 2023

Completed a Bachelor of Technology in Electronics and Communication Engineering at Ponnaiyah Ramajayam Institute of Science and Technology from 2018 to 2023.