Sonica Kalmangi

“Data engineer working on healthcare and operational datasets, owning production-grade pipelines end-to-end (bronze/silver/gold) with volumes ranging from a few GBs to several TBs per day. Strong focus on data quality automation (Great Expectations), schema evolution (Delta Lake), and reliability/observability on Azure (Monitor/Log Analytics), plus experience with external data collection and backfill-friendly designs.”

“Asset Management Risk professional at Fidelity Investments who built and productionized an agentic RAG platform enabling compliance and analysts to query 10,000+ fund documents with cited answers in seconds. Implemented structure-aware semantic chunking (AWS Textract), hierarchical retrieval, and hybrid search to raise accuracy from 68% to 94%, and built an evaluation framework tracking accuracy/latency/cost/hallucinations—delivering 40+ hours/month saved and zero critical production failures.”

“Data engineer with experience at Moderna and Block owning high-volume (≈10TB/day) production pipelines on AWS, using Kafka/S3/Glue/dbt/Snowflake with strong data quality and observability practices (schema validation, anomaly detection, CloudWatch monitoring). Also built external financial API ingestion with Airflow retries, throttling/token rotation, and schema versioning, and helped stand up an early-stage biomedical data platform with CI/CD and incident debugging.”