F

FIRY

Global portfolio powering competitive gaming platforms

Lead Data Scientist

Applied Machine LearningPosted on Nov 13
Full-timeBeijing, China$111k

About the Job

Requirements

  • A Master's degree in Computer Science, Machine Learning, Statistics, Biostatistics, Economics, Operations Research, or a related quantitative field is required.
  • At least 7 years of industry experience applying data science or machine learning, including systems whose results changed product decisions.
  • Deep experience with experimentation and causal inference, including test design, power analysis, sequential testing, holdouts, and understanding how experiments mislead.
  • Strong probabilistic modeling on tabular behavioral data, including gradient boosting, calibration, and leak-free backtests.
  • Production-quality Python and SQL, with a record of shipping models into live product environments.
  • Proven ability to explain uncertain or negative results to senior non-technical leaders and influence product decisions.
  • Deep understanding of machine-learning evaluation failure modes, including leakage, overfitting, distribution shift, and baseline selection.
  • Strong command of test design, power analysis, sequential testing, holdouts, uplift modeling, and off-policy evaluation on messy, real-world behavioral data.
  • Experience with gradient boosting, survival models, calibration, leak-free backtests, and small, shifting datasets.
  • Ability to read research critically, design fair comparisons, and assess whether results will hold up on real studio data.

Responsibilities

  • Own the evaluation methodology for predictive live-ops models, including churn, lifetime value, and purchase propensity, using out-of-time backtesting, leakage checks, drift detection, and promotion rules; set standards for shippable results.
  • Design and run measurement frameworks for live-ops interventions, selecting methods such as A/B tests, uplift models, bandits, or constrained Bayesian optimization for each game, and make go/no-go decisions.
  • Define objectives, guardrails, step limits, and early-signal metrics for self-tuning game loops, including when tuning should proceed automatically and when human decisions are required.
  • Track developments in tabular machine learning, survival analysis, causal inference, bandits, and sequence models, and conduct rigorous comparisons before recommending adoption.
  • Write production-quality Python training and scoring jobs and partner with engineers on pipelines and product surfaces.
  • Deliver defensible results, including negative and uncertain results, to executives and studio clients; translate model behavior into actionable language for non-technical studio operators.

Desired Qualifications

  • A PhD is strongly preferred.
  • Experience with survival models, bandits, uplift modeling, or Bayesian optimization.
  • Free-to-play live-ops experience, including retention, monetization, or in-game economies.

About the Company

FIRY

Global portfolio powering competitive gaming platforms

FIRY builds the underlying infrastructure for competition, commerce, and digital engagement through three segments: Skillz, a platform for skill-based mobile gaming with real-money tournaments; RZR, an AI-powered performance marketing and ad-tech platform; and Beamable, backend infrastructure and live-ops tools for game developers. It operates as an integrated ecosystem that leverages first-party data and enterprise-scale systems to help developers, advertisers, and businesses scale and monetize. Its distinct approach is a portfolio that creates synergies where each unit supports the others, forming a compounding flywheel. The goal is a unified platform for gaming, advertising technology, identity, payments, and digital commerce that enables value creation across its partners.

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