Snowflake Data Engineer (HL7 / Healthcare Data)

HCLTech - Digital Business is seeking a Snowflake Data Engineer with a focus on HL7 and healthcare data. The role involves designing and implementing a Snowflake-based data platform and working on data pipelines related to HL7 and SQL Server.

Responsibilities:

• Gather requirements and analyze existing HL7 → SQL Server → ETL workflows
• Design Bronze, Silver, Gold layers in Snowflake
• Build data ingestion pipelines for HL7 messages (ADT, ORM, ORU)
• Parse and map HL7 data into structured relational models
• Perform data transformation, cleansing, and normalization
• Reverse engineer SQL Server databases (tables, SPs, jobs, dependencies)
• Migrate ETL and batch jobs to Snowflake (Tasks/Streams/ADF/Airflow)
• Develop data models (fact & dimension tables) for analytics
• Ensure data quality, lineage, and governance
• Implement scheduling, monitoring, and performance optimization

Requirements:

• Strong experience in Snowflake (Medallion Architecture)
• Expertise in SQL Server (Schema, SPs, Jobs, Performance tuning)
• Knowledge of HL7 data structures & healthcare workflows
• Experience in ETL/ELT tools (ADF, Airflow, etc.)
• Data modeling (Dimensional / Star Schema)
• Handling semi-structured data (JSON/VARIANT)
• DICOM data exposure
• Real-time streaming (Kafka/Event Hub)
• Healthcare domain experience
• Data governance & security (HIPAA awareness)