Senior Marketing Decision Scientist IIActive

The opportunity

Instacart’s Marketing Data Science and Analytics team partners across Marketing, Strategic Finance, and Product to power data-driven growth. As a Senior Marketing Decision Scientist II, you will shape how we measure, forecast, and optimize marketing performance across channels,…

What you'll do

  • Own the end-to-end marketing measurement strategy across paid search, paid: social, display, affiliates, CTV, and lifecycle/CRM, unifying MMM, MTA, and incrementality testing to guide channel and portfolio-level investment.

  • Design, launch, and analyze experiments (e.g., geo tests, PSA tests,: holdouts) and causal inference studies that quantify lift, inform targeting, and establish best practices for decision-making under uncertainty.

  • Build and productionize predictive models (e.g., LTV, churn/propensity,: audience response, budget allocation) using SQL and Python or R, partnering with data engineering to automate pipelines and ensure data quality.

  • Create executive-ready dashboards and narratives in tools like Looker or Mode: that track KPIs, explain performance drivers, and translate insights into clear, prioritized recommendations.

  • Partner with Strategic Finance and Marketing leadership on forecasting,: scenario planning, and quarterly planning processes; influence roadmaps and present findings to VP+ stakeholders.

  • Prioritize ruthlessly in a dynamic environment, managing multiple concurrent: projects and elevating the team’s analytical bar through peer reviews, documentation, and mentorship.

What they're looking for

  • + years of relevant experience; advanced degree (MS/PhD) in a quantitative discipline.
  • Experience building, validating, and operationalizing Marketing Mix Models: (preferably Bayesian approaches using PyMC, Stan, or similar) and triangulating MMM with experiment results.
  • Familiarity with privacy-conscious measurement (e.g., conversion modeling,: SKAN, clean rooms such as Amazon Marketing Cloud or Ads Data Hub) and ad platform APIs.
  • Experience with analytics engineering and pipeline tooling (e.g., dbt, Airflow) and strong data QA practices.
  • Background in lifecycle/CRM analytics (e.g., uplift modeling, audience: selection, message experimentation) and LTV forecasting.
  • Exposure to experimentation platforms and feature flagging (e.g., Optimizely: or internal frameworks) and to ML applications for bidding, pacing, and creative optimization.
  • Experience mentoring peers and elevating analytical standards through code: reviews, reproducible research, and documentation.