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Eranda Sooriyarachchi

Mid-level AI Engineer specializing in RAG, conversational AI, and agentic systems

MedLibIowa State UniversityRemote6 Years ExperienceMid LevelWorks On-Site

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About

Built and deployed a production RAG-based clinical decision support assistant at MedLib, focused on fast, trustworthy answers from large medical documents. Demonstrates deep practical experience improving retrieval accuracy (semantic chunking + metadata-aware search), controlling hallucinations with grounded generation and thresholds, and adding clinician-requested citations using chunk metadata, with evaluation driven by healthcare professional review.

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Key Strengths

  • Built and deployed a production LLM-powered clinical decision support assistant
  • Designed end-to-end RAG pipeline (ingestion → embeddings/vector DB → retrieval → grounded generation with citations)
  • Improved retrieval quality via semantic chunking and metadata-aware filtering/re-ranking
  • Reduced hallucination risk by constraining answers to retrieved context and using retrieval thresholds
  • Optimized latency and cost with caching
  • Strong evaluation discipline: stage-level + system-level metrics with clinician gold-standard review
  • Modular LLM workflow design using LangChain; able to swap models/retrieval strategies without rewriting pipeline
  • Implemented reliability practices: schema validation, guardrails, logging/trace inspection, fallback behavior, production monitoring
  • Effective collaboration with non-technical clinical stakeholders; ran workshops/feedback sessions that drove product changes (citations)

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Experience

Founder & AI EngineerMedLib, Inc. · Jan 2024 – Present
Graduate Teaching AssistantIowa State University · Aug 2022 – Dec 2022part-time
Freelance DeveloperFreelance · Nov 2019 – Dec 2021freelance
Graduate Research AssistantIowa State University · Aug 2017 – May 2019part-time

Education

Iowa State Universitymaster, Computer Engineering (Software Systems) (2023)
Iowa State Universitybachelor, Genetics (2017)

Awards

  • Cum Laude

Skills

API GatewayAWSAWS LambdaCI/CDComputer VisionCCSSCybersecurityDockerEmbeddingsFAISSFastAPIFlaskGitHub ActionsGrafana

Languages

English

Certifications

AWS Solutions Architect – AssociateASIST CertifiedBiochemistry - Iowa State University

Memberships

  • IEEE
  • NSCS
  • UNICEF Club

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Eranda SooriyarachchiMid-level AI Engineer specializing in RAG, conversational AI, and agentic systems