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DoorDash

Runs apps for local food and grocery delivery

Staff Machine Learning Scientist - Applied Causal Inference

Applied Machine LearningConfirmed live in the last 24 hours
Full-time

About the Job

Requirements

  • Deep practical experience with causal inference, econometrics, experimentation, or causal machine learning.
  • Experience shipping models or decision systems in production, ideally in consumer marketplaces, advertising, recommendations, search, pricing, promotions, logistics, fintech, or other high-scale settings.
  • Strong judgment in weighing randomized experiments, observational estimation, and model-based decisioning.
  • Ability to debate and apply doubly robust estimation, double machine learning, instrumental variables, difference-in-differences, CUPED, uplift modeling, contextual bandits, and off-policy evaluation.
  • Strong machine-learning engineering ability to build reliable pipelines, train models, evaluate them rigorously, and partner with platform teams to productionize them.
  • Product judgment to connect methods to business decisions rather than only optimizing offline metrics.
  • Ability to work across functions with machine-learning engineers, economists, data scientists, product managers, and business leaders.

Responsibilities

  • Design, build, and productionize causal machine-learning systems that influence marketplace decisions across New Verticals.
  • Build uplift and heterogeneous treatment effect models for consumer lifecycle value, promotions, retention, and reactivation.
  • Develop counterfactual evaluation frameworks for ranking, recommendations, search, promotions, substitutions, and marketplace interventions.
  • Build systems connecting experimentation, observational data, and machine-learning decisioning to support tradeoffs when randomized experiments are slow, noisy, or incomplete.
  • Design surrogate metrics and early indicators that help teams move faster while preserving long-term marketplace health.
  • Partner with econometrics and analytics leaders to choose appropriate methods, including doubly robust estimation, instrumental variables, difference-in-differences, synthetic controls, double machine learning, CUPED-style variance reduction, contextual bandits, and off-policy evaluation.
  • Translate causal models into production systems that shape decisions in ranking, targeting, budget allocation, inventory-aware discovery, and consumer growth.
  • Raise the bar for causal reasoning across machine-learning teams, including assessing when to trust a model and debugging causal claims in a marketplace.

About the Company

DoorDash

Runs apps for local food and grocery delivery

DoorDash runs apps that let people order restaurant meals, groceries, and other goods from local businesses, which independent couriers called Dashers bring to their doors. In 2019 it overtook Grubhub to become the largest food delivery service in the United States, and it later expanded abroad by buying Finland's Wolt and Britain's Deliveroo. Merchants pay DoorDash a fee on each order and can buy ads in its apps, while customers pay delivery and service fees or join DashPass, a subscription that cuts those fees. Businesses can also hire Dashers through its Drive service to carry orders placed on their own websites. Four Stanford students founded DoorDash in 2013, and it is based in San Francisco, California.

Company size
10,001+
Company stage
IPO
Headquarters
San Francisco, CA
Founded
2013

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