Role overview

Senior Staff Machine Learning Engineer, Search & Discovery

Requirements and responsibilities

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About the Job

  • Define and drive the long term technical vision for Shopping ML across search, discovery, recommendations, and personalization.
  • Lead development of AI systems that fundamentally improve how customers discover products and shop on Instacart.
  • Architect large scale ML systems combining LLM reasoning, retrieval, ranking, recommendation models, and personalization.
  • Build and operate production ML systems powering real time shopping experiences across millions of users and products.
  • Identify foundational ML capabilities that unlock new customer experiences and accelerate experimentation across the organization.
  • Partner with senior leaders across product, engineering, and data science to shape technical strategy and roadmap.
  • Influence company wide ML architecture and contribute to major technical initiatives across Instacart.
  • Mentor senior/staff engineers through design reviews, architecture guidance, and hands-on collaboration.

Minimum Qualifications

  • Master’s or PhD in Computer Science, Machine Learning, Artificial Intelligence, or related field, or equivalent industry experience.
  • 10+ years building and operating large scale machine learning systems in production.
  • Proven track record architecting ML systems that power core product experiences at global scale.
  • Deep expertise in areas such as recommendation systems, ranking models, embeddings, representation learning, or search systems.
  • Experience combining generative AI with traditional ML systems such as retrieval, ranking, and personalization.
  • Experience designing ML platforms that support large scale experimentation, training, and deployment.
  • Ability to influence senior engineering and product leaders and drive technical strategy.
  • Experience mentoring engineers and raising the technical bar across teams.

Preferred Qualifications

  • Experience building search, discovery, or recommendation systems for large consumer platforms.
  • Expertise in large language models, agentic AI systems, or tool using AI architectures.
  • Experience fine tuning and distilling LLMs for low latency production systems, balancing model quality, latency, and cost.
  • Experience building ML infrastructure supporting large scale experimentation and model deployment.
  • Background working on e-commerce, marketplaces, or large consumer platforms.
  • Recognized technical leadership through publications, patents, conference talks, or open source contributions.
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