Hiring: Senior Machine Learning Engineer II, Search & Recommendations Ranking Company: Instacart Location: United States Job Posted Time: 2026-09-15 20:08:18 Target Skills & Keywords : LLM, Move, Objective-C, SAFe, jQuery About the job Required Skills: •Architect the ranking backbone that unifies query understanding, personalization, multi-objective ranking, ads, and merchandising into a single adaptive platform. •Design and build a search autosuggest system optimized for personalization and value-based relevance. •Design long-horizon objective functions (e.g., incrementality, LTV, habit formation) and build uplift/causal value models that move beyond short-term engagement. •Develop production-grade Multi-Task Learning (e.g., shared encoders, MMOE/PLE task heads) to jointly learn relevance, propensity, margin, and churn risk—ensuring calibration, constraints, and explainability. •Own the inference layer: goal-aware re-rankers, diversity and quality constraints, safe exploration, and millisecond-class latency optimization. •Advance evaluation practices: online experiments, long-horizon cohort metrics, counterfactual evaluations, and attribution pipelines for tracking incremental GTV and retention. •Partner across ads, infrastructure, product, and design teams to trans Interested candidates, please apply directly through the job posting on company's career page or try via AI auto apply on this platform. Don't miss this opportunity to join a forward-thinking team!