Exist Software Labs, Inc.
Data Engineer
Data Engineering & Analytics
- Automated daily regulatory and compliance reporting, reducing manual processing time from 4 hours to 15 minutes.
- Engineered multi-channel data consolidation across agency and bancassurance systems, processing 500K+ transactions daily.
- Optimized SQL models and Power BI datasets, cutting report load time by 94% from 5 minutes to 19 seconds.
- Refactored performance-critical preprocessing pipelines using Dask, reducing runtime by 90%.
Applied AI / Search Systems
- Built a production RAG pipeline handling 1,000+ daily queries using LangGraph, AWS Bedrock, and PostgreSQL pgvector.
- Implemented hybrid retrieval combining BM25 keyword search and vector similarity for semantic candidate search.
- Designed AI search workflows spanning intent classification, query analysis, HyDE expansion, and semantic ranking.
- Achieved 84% accuracy across 49 QA test cases through systematic evaluation and prompt iteration.