Avinash Parasa

Data Engineer @HCA Healthcare

TX, US

As a Data Engineer in the healthcare domain, I played a key role in building scalable data solutions that improved patient care and clinical decision-making. I successfully integrated and unified diverse health data sources including EHRs, clinical databases, and billing systems into a centralized data lake, enabling seamless analytics and better data accessibility for healthcare teams.Leveraging Apache Spark for distributed data processing, I improved query performance by 40%, delivering faster insights critical to patient outcomes. I utilized Python for end-to-end data transformation tasks, such as data cleansing, feature engineering, and missing value imputation, which directly enhanced model reliability and prediction accuracy.I designed and implemented Power BI dashboards to visualize real-time healthcare metrics like readmission rates, treatment effectiveness, and patient outcomes, empowering clinicians with actionable insights. My work in feature engineering such as creating features based on patient history, comorbidities, and discharge summaries boosted model performance by 15%.In the cloud environment, I implemented AWS Lambda functions for serverless ETL workflows, ensuring auto-scaling and reduced infrastructure overhead. I also optimized complex SQL queries to manage large-scale datasets efficiently, achieving a 25% improvement in execution speed through indexing, partitioning, and tuning strategies.To support data modeling and system architecture, I created comprehensive ER diagrams outlining key healthcare entities such as Patients, Doctors, Treatments, and Medications. I actively participated in Agile ceremonies, including daily stand-ups, to ensure smooth team collaboration, track deliverables, and resolve blockers effectively.