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Our customers are our compass, authenticity thrives, bold ideas are welcome, and everyone can bring their unique selves to work — every day. We're in this together, sustaining the future of our customers, our company, and our planet.
Join a team of passionate thinkers, innovators, and dreamers — and help us connect people and build communities to create economic opportunity for all.
At eBay, our SEO and Landing Page Platform powers how millions of buyers discover products through search engines and navigate our marketplace. Operating at the scale of hundreds of millions of live listings, we build intelligent systems that improve search discoverability, content understanding, taxonomy quality, and buyer experiences across global markets.
We are looking for a Senior Machine Learning Engineer to lead the design, development, and deployment of large-scale AI and Machine Learning solutions that power search, discovery, content intelligence, and operational automation.
This role sits at the intersection of Machine Learning, Generative AI, Knowledge Graphs, Search Technologies, and Large-Scale Data Engineering.
What You'll Work On
You will help build next-generation AI systems including:
Large Language Model (LLM) applications and AI-powered experiences
Retrieval-Augmented Generation (RAG) systems for knowledge retrieval and intelligent decision-making
Agentic AI workflows and autonomous reasoning systems
Knowledge Graph construction, enrichment, and entity understanding
Entity Resolution across large hierarchical datasets
Taxonomy optimization and automated catalog intelligence
Image understanding and quality scoring systems
Search relevance and discoverability improvements
Real-time and batch ML inference platforms
Large-scale ML pipelines and feature engineering systems
Key Responsibilities
Design, build, and deploy production-grade Machine Learning and AI solutions at scale.
Develop scalable ML pipelines, feature stores, and inference systems using distributed computing frameworks.
Build and optimize RAG architectures leveraging vector databases, embeddings, retrieval systems, and LLMs.
Design Agentic AI solutions capable of orchestrating workflows, reasoning across multiple tools, and automating complex business processes.
Collaborate with Product, Engineering, Applied Scientists, and Leadership teams to define AI strategy and roadmap.
Drive innovation in Generative AI, Knowledge Graphs, Search, and Discovery technologies.
Mentor engineers and contribute to technical leadership across the organization.
Establish engineering best practices for model development, deployment, monitoring, and governance.
Required Qualifications
Bachelor's or Master's degree in Computer Science, Engineering, Artificial Intelligence, Machine Learning, or a related field.
10+ years of industry experience in Machine Learning, Applied AI, Data Science, or Data Engineering.
Strong production-grade programming experience in Python.
Proven experience building and deploying ML solutions into production environments.
Strong expertise in distributed data processing using Spark, PySpark, Hadoop, and SQL.
Experience designing scalable data pipelines and ML platforms.
Strong communication, collaboration, and technical leadership skills.
Preferred Qualifications
Hands-on experience with:
Large Language Models (LLMs)
Generative AI applications
Retrieval-Augmented Generation (RAG)
Agentic AI frameworks
Knowledge Graphs
Vector Databases and Embedding Models
Experience with MLOps, Model Serving, and Online Inference Systems.
Experience with Search, Recommendation, Ranking, or Discovery systems.
Cloud platform experience (AWS, GCP, or Azure).
Open-source contributions or leadership within AI/ML communities.
Why Join This Team?
This is an opportunity to solve some of the most challenging AI and Machine Learning problems at internet scale. Your work will directly influence how millions of buyers discover products, how eBay understands its vast inventory, and how emerging AI technologies transform the future of commerce and customer experiences.
Additional Details
eBay is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, national origin, sex, sexual orientation, gender identity, veteran status, and disability, or other legally protected status. If you have a need that requires accommodation, please contact us at [email protected]. We will make every effort to respond to your request for accommodation as soon as possible. View our accessibility statement to learn more about eBay's commitment to ensuring digital accessibility for people with disabilities.
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