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Elena(Jiyoung) Choi

Junior Software Engineer specializing in Applied AI and backend systems

Confidential Healthcare AI StartupPenn State University ParkNew Jersey, USA3 Years ExperienceJunior LevelWorks Remote

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About

Full-stack/AI product engineer who has shipped both a production-style React finance app and multiple LLM-powered systems end-to-end. Particularly strong in turning early-stage AI concepts into production workflows, including a Bedrock-based multi-turn chatbot with durable session memory and a medical credentialing document parser that cut pipeline failures by 50%+ on large, messy real-world files.

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Key Strengths

  • End-to-end full-stack ownership across frontend, backend, and data layer
  • Strong React architecture and state management design
  • TypeScript-first API and UI modeling for safe refactoring
  • LLM product engineering with Bedrock and custom Nova models
  • Built session-aware multi-turn chatbot systems with durable memory
  • RAG pipeline and context-window management expertise
  • 0-to-1 product development in high-growth startup environments
  • Pragmatic speed-vs-quality decision making
  • Defensive engineering around unreliable LLM outputs
  • Testing discipline with unit and integration coverage for critical paths
  • Document AI and medical credentialing workflow automation
  • Reduced parsing pipeline failures by more than 50%
  • Handled large real-world documents over 80+ pages

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Experience

Full Stack & AI EngineerConfidential Healthcare AI Startup · Jul 2025 – Apr 2026
SmartOCR Project Team LeadNittany AI Alliance · Jun 2024 – Aug 2024
Full Stack DeveloperTelepossible · Aug 2021 – Aug 2023

Education

Penn State University Parkbachelor, Computer Science (2025)

Awards

  • TE Connectivity AI Cup Best Business Impact Award (2025)
  • HackPSU Overall 2nd Place (2023)
  • Nittany AI 2nd Place (2023)
  • Nittany AI 3rd Place (2022)
  • Best Use of Google Cloud (2023)

Languages

English

Certifications

CRA UR2PhD ProgramCodePath Technical Interview Prep — Advanced

Memberships

  • Penn State A Cappella

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Elena(Jiyoung) already has a relationship with Reval, so a warm intro from us gets a much better response than cold outreach.

Typically responds within 24 hours

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Elena(Jiyoung) ChoiJunior Software Engineer specializing in Applied AI and backend systems