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Shijie Sun

Junior Machine Learning Researcher specializing in AI agents and materials modeling

Pinetree HealthUniversity of Illinois Urbana-ChampaignChampaign, IL4 Years ExperienceJunior LevelWorks On-Site

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About

Built and shipped a production browser automation LLM agent with a structured 4-stage workflow (plan/browse/extract/verify), emphasizing reliability via schema validation (Pydantic), constrained tool use, and contextual retry loops. Reports ~60% accuracy on the WebArena benchmark and monitors runs via console output and the Agno framework GUI, prioritizing accuracy over speed.

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Key Strengths

  • Shipped a production browser-use LLM agent with exception handling and contextual retries
  • Designed a 4-step agent workflow (plan → browse → extraction → verification) with per-step prompts, tools, and schemas
  • Uses strict schema validation (Pydantic) to avoid trusting raw LLM outputs
  • Constrained toolset and max-step budgets to improve predictability and safety
  • Achieved ~60% accuracy on WebArena benchmark (SOTA claim)
  • Implemented verification-driven feedback loop that improves planning after failures

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Experience

AI Agent Software Engineering InternPinetree Health · May 2025 – Aug 2025internship
Machine Learning Interatomic Potential Research AssistantLaboratory of Advanced Multiscale Material Innovation · Jan 2022 – Present

Education

University of Illinois Urbana-Champaigndoctorate, Industrial Engineering (2026)

Skills

PythonRCC++BashHTMLJavaScriptCSSDockerCUDAMATLABGitGitHub ActionsNumPySciPy

Languages

English

Publications

2 publications

Machine learning interatomic potentialsMolecular dynamics simulationAtomistic simulations of 2D materials (graphene) with defectsThermal and mechanical properties of materials

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AI & Machine LearningPythonRCC++

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Connect with Shijie

Shijie 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

Recommended

Already have an account?

Hire with Reval

Find your next great hire

Our AI agents source, screen, and vet candidates for your open roles. Get qualified candidates within 48 hours.

$250one-time kickoff
10%on successful hire
Post a Role90-day money-back guarantee
Shijie SunJunior Machine Learning Researcher specializing in AI agents and materials modeling