Contact Information

Name Dongxin (Betty) Guo
Professional Title AI Researcher | COO @ Stellaris AI | Partner @ Brain Investing
Email email

Experience

  • 2023 -

    Hong Kong SAR

    Chief Operation Officer
    Stellaris AI
    Leading LLM infrastructure and operations for a native-safe, general-purpose LLM company.
    • LLM pre-training, fine-tuning, and inference infrastructure management
    • Overseeing development of SGPT series models
    • Building scalable ML pipelines for production deployment
  • 2023 -

    AI Researcher
    Brain Investing Limited
    • LLM pre-training and fine-tuning
  • 2023 - 2023

    Hong Kong SAR

    Partner, AI Quantitative Trading
    Brain Investing Limited
    Leading AI-driven investment strategies and LLM-powered portfolio management.
    • Spearheading Athena™ — Hong Kong’s first LLM-powered portfolio management platform
    • Investment management and Large Language Model Operations (LLMOps)
  • 2020 - 2022

    Managing Director, AI Quantitative Trading
    Brain Investing Limited
    • Led AI/ML team for quantitative trading systems
    • Investment management and applied artificial intelligence
  • 2018 - 2020

    Hong Kong SAR

    Director, Quantitative Trading Researcher
    Brain Investing Limited
    • Investment management
  • 2017 - 2018

    Hong Kong SAR

    Senior Associate, Quantitative Researcher
    Brain Investing Limited
    • Investment management
  • 2015 - 2017

    Hong Kong SAR

    Quantitative Trading Researcher
    The Aria Group Ltd
    • Investment management

Education

  • 2017 - 2026

    Hong Kong

    Ph.D.
    The University of Hong Kong
    Computer Science
    • Advisor: Prof. Siu-Ming Yiu
    • Research: LLM Theory, Multi-Agent Systems, RAG, AI Safety, Learning Theory
  • 2015 - 2017

    Hong Kong

    M.Sc.
    The University of Hong Kong
    Computer Science (Financial Computing Stream)

Skills

Research (Expert): LLM Theory, Multi-Agent Systems, Retrieval-Augmented Generation, AI Safety & Alignment, Statistical Learning Theory, Mechanism Design
Engineering (Expert): Python, PyTorch, LLM Pre-training & Fine-tuning, Distributed Systems, ML Infrastructure, Quantitative Trading Systems
Leadership (Expert): Team Management, Product Strategy, Operations, Regulatory Compliance, Investor Relations

Certificates

  • DEC x HKU AI Literacy for Research Postgraduates - Digital Education Council (2026)

Awards

  • 2014
    CBS Prize for Distinguished Postgraduate Students
    The Hong Kong Polytechnic University

Languages

Chinese (Mandarin) : Native
English : Full professional proficiency
Cantonese : Working proficiency