Alex Liu
8 items 256K available
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GitHub
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Who Am I
Alex Liu
AI Engineer

Hi, I'm Alex.

I build AI systems for Penguin Random House.

I'm interested in the intersection of technology and media.

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1 item Ready
Experience

Work History

  1. 2025 - Present
    AI Solutions Engineer
    @ Penguin Random House

    Designing, building, evaluating, and deploying AI systems across the publishing value chain.

  2. 2024 - 2025
    Machine Learning Engineer
    @ Penguin Random House

    Developed ML models for pricing and demand forecasting.

  3. 2021 - 2024
    Project Management Analyst
    @ Penguin Random House

    Managing the strategic program on Generative AI.

3 items Timeline
Leisure

After Hours

Make Noise

Squier Tele + Fender Mustang, or just my larynx.

Float Like A Butterfly

Trying not to eat too many rear kicks at Muay Thai.

2 items Hobbies
Art & Code
3 items 128K available
Manifesto

Curation vs Creation

With generative AI, the lines blur between curation and creation.

Either way, these tokens are a reflection of your tastes, values, and intent.

Why let it be sloppy?

1 item Thoughts
Mafia ACE

Mafia ACE

AI players evolving the metagame of social deduction game Mafia through agentic context engineering.

Tech Stack

  • Backend: FastAPI with async game orchestration
  • Frontend: SvelteKit with Art Deco noir aesthetic
  • LLM Support: OpenAI, Anthropic, Gemini, OpenRouter
  • Observability: Weave integration for agent trace analysis

View on GitHub

1 item Project
Crimson

Crimson

★ Winner — AWS x Datadog LLM Observability Hackathon

An automated red-teaming agent that probes AI systems for prompt injection vulnerabilities through multi-stage reconnaissance, attack planning, and adversarial testing.

Tech Stack

  • Agents: AWS Strands Agents SDK with 4-stage pipeline
  • Graph: Neo4j knowledge graph for architecture mapping
  • Inference: Amazon Bedrock
  • Observability: Datadog LLM Observability for full trace analysis

View on GitHub

1 item Project
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