Instacart is seeking a Senior Staff Machine Learning Engineer to lead the technical vision for AI in search and discovery. This role involves architecting and building large-scale ML systems that combine generative AI, LLM reasoning, retrieval, ranking, and personalization to create next-generation shopping experiences. The engineer will also build and operate production ML systems serving millions of users in real-time and mentor other engineers.

Senior Staff Machine Learning Engineer, Ads Quality at Instacart. This role focuses on designing and building innovative AI-powered systems for digital advertising quality, including optimizing ads pacing/bidding, retrieval, and auction processes. It involves identifying and building generative AI solutions, recommendation frameworks, and advanced systems to improve advertiser experience and campaign efficacy. The role also requires defining technical strategy, mentoring engineers, and collaborating across teams. It's a hands-on IC/TL role at the Director+ level.

Staff Software Engineer for Instacart's Home & Cross-Retailer Search team, focusing on building and scaling the infrastructure for customer discovery, search, ranking, indexing, and personalization. The role involves defining technical vision, owning architecture, partnering with ML teams, and improving developer velocity. Requires strong backend systems experience, particularly in search, recommendations, or feed-ranking systems.

Senior Data Scientist focused on Search experience at Instacart. This role involves owning core search metrics, designing and analyzing experiments for ranking, retrieval, and UX, and partnering with ML teams to improve relevance, quality, and latency. The position requires strong analytical skills, A/B testing experience, and the ability to translate complex data into actionable recommendations. Experience in search relevance, NLP, and bridging offline/online metrics is preferred.

Senior Data Scientist role focused on designing, developing, and optimizing auction and bidding systems for Instacart's advertising marketplace. This involves building ML models for forecasting and optimization, running experiments, and applying expertise in causal inference and mechanism design to ensure a fair and efficient marketplace that benefits advertisers and consumers.

Senior Data Scientist on the Ads Auctions team responsible for innovating and enhancing auction mechanisms, including pricing strategies, bid optimization, and selection processes. The role involves designing analytical frameworks, running experiments, developing ML models for forecasting and optimization, and building simulations to improve CPC infrastructure and bidding algorithms, directly impacting advertiser performance and revenue. Requires expertise in causal inference, mechanism design, and econometrics.

Staff Software Engineer for Instacart's Shopper Activation & Engagement team, focusing on the technical strategy and architecture for shopper onboarding, engagement, and compliance. The role involves leading product strategy, owning critical compliance systems, managing cross-functional programs, mentoring engineers, and improving service reliability. A key aspect is hands-on experience building AI tooling or agentic automation and integrating AI into developer workflows or product features, alongside designing compliant systems for identity and eligibility.

Senior Software Engineer II on the Ads Data Solutions Engineering team, focusing on building core capabilities for Instacart's off-platform advertising, secure data collaboration (cleanrooms), automated taxonomy management, and associated platform foundations. The role involves technical leadership, modernizing data solutions infrastructure, scaling integrations, extending cleanroom capabilities, and automating workflows. It emphasizes AI-first engineering and building AI-powered internal tools.