Howdy! I’m Weijia Zhang

I am an incoming M.S. student in Computer Science at Yale University (2026 - 2028), admitted to the (Thesis Track) M.S. in Computer Science with Full Scholarship.

I graduated from UIUC in Math + Computer Science with the 2026 C.W. Gear Outstanding Undergraduate Student award, as one of two annual recipients.

Currently, I am a Machine Learning Engineer Intern at TikTok working on self-evolving agents, and a research assistant in UIUC U Lab on LLM agents, multimodal agents, and agentic RL, advised by Prof. Jiaxuan You.

Research

My research studies reliable self-improving agents for long-horizon interactive tasks. I explore how agents can learn from interaction traces and failures, acquire reusable memory and skills, and improve through inference-time evolution and SFT/RL across coding, computer-use, and multimodal environments.

  • Self-Evolving Agents: recursive self-improvement (RSI), self-evolving harnesses, memory and skills, and multi-agent evolution
  • Multimodal Agents: game-development agents, GUI and computer-use agents, and agentic world models
  • Agent Post-Training: SFT and RL for coding agents and long-horizon agents

News

Gamedev

Beyond research, I am a passoinate indie game developer, feel free to check my game work on the game page. I am also willing to discuss the future of AI X Game.

Education

  • Yale University

    Thesis Track with Full Scholarship

  • University of Illinois Urbana-Champaign

    2026 C.W. Gear Outstanding Undergraduate Student, one of two annual recipients; 2025 Dean's List

Work Experience

  • TikTok

    Project lead for TikTok's RSI/Self-Evolving Agent framework, built from 0 to 1.

  • Microsoft

    Built the Excel Coding Agent data engine and post-training pipeline for Excel Copilot's code agent.

  • Tencent, WeChat Group (WXG)

    Built cross-platform performance analysis and Unity memory-profiling tools for WeChat Mini Programs.

  • Reborn Network

    Built real-time embodied role-playing agents in Unity VR games.

See full responsibilities on my CV

Cooperate With Me

Feel free to reach me via email or LinkedIn.

my schedule

Feel free to check my availability. Times shown in Eastern Time.