Jonathan Gu with his family

Jonathan Gu

Economist & Machine Learning Engineer

I build systems that fuse economic theory with production ML at Instacart — marketplace optimization, availability forecasting, and growth experimentation that handle billions in GMV. PhD Economics from UCLA, BA Statistics & Economics from Berkeley.

Causal Inference

A/B design, guardrails, heterogeneous treatment effects, and ROI modeling for product decisions.

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ML Systems

Reproducible training pipelines, feature stores, eval harnesses, and observability for production models.

Economic Mechanisms

Auction design, multi-agent incentives, and policy robustness that optimize long-run marketplace health.

Product & Strategy

Hypothesis framing, experiment design, and clear decision memos that turn analysis into shipped impact.

Instacart

San Francisco
Machine Learning Engineer — Marketplace Optimization
  • Built item availability ML system serving real-time predictions across millions of SKUs with pinpoint accuracy
  • Designed causal measurement frameworks that capture long-term effects without sacrificing decision speed
  • Shipped growth experiments and forecasting systems handling billions in annual GMV

"First Month Free" — From Signups to Retention

Full-funnel subscription experiment with day-of-week modeling, decision ranges, and automated guardrails.

→ Clear ROI ranges, simplified guardrails, faster executive approvals
A/B Testing Causal ROI

Reproducible Training for Availability Forecasting

Standardized model training via JSON configs tied to feature tables, with eval harnesses and on-call alerting.

→ Fewer out-of-stock surprises, faster retrains, clearer on-call runbooks
Forecasting Feature Store Observability

Auctions & Mechanism Design

Search auction mechanisms and bidding strategies with emphasis on long-run value and incentive alignment.

→ Robust bidding policies validated through multi-agent simulation
Auctions Game Theory Simulation

PhD, Economics

UCLA — 2014–2020

Corrected conventional update rules in reinforcement learning to better capture long-run value across states. Additional work on regression discontinuity and education policy.

BA, Statistics & Economics

UC Berkeley — 2007–2011

我們能做的,就是將自己的事做到最好,其它,交給命運吧。

All we can do is do our own work to the best of our ability. The rest, leave to fate.
— 顧鳴高