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Mark Liu

Work

Projects

  1. 01

    Which winback offer to send each lapsed subscriber. Assigning offers by churn tenure earned $39K more margin per million reachable users than the better single offer.

    skills
    Experimentation & Metrics · Pricing & Unit Economics
    stack
    Python · pandas · NumPy · SciPy · Matplotlib
  2. 02

    Four linked models on when paying for storage by usage beats buying hardware up front, from the customer's side and from the vendor's.

    skills
    Pricing & Unit Economics · Simulation & Forecasting
    stack
    Python · NumPy · SciPy · Matplotlib · Streamlit · Plotly
  3. 03

    A three-stage pipeline that turns a plain-language request like “iced tea under 100 calories” into a ranked list of Starbucks products.

    skills
    NLP & LLMs
    stack
    Python · pandas · NumPy · Gemini API · Pydantic

Work in progress

  1. 04

    Tassel

    2026

    A booking platform connecting graduating UCLA students with student photographers in Los Angeles.

    skills
    Product Design · Experimentation & Metrics
    stack
    Next.js · TypeScript · Tailwind · Vercel