At eBay, we're more than a global ecommerce leader — we’re changing the way the world shops and sells. Our platform empowers millions of buyers and sellers in more than 190 markets around the world. We’re committed to pushing boundaries and leaving our mark as we reinvent the future of ecommerce for enthusiasts.

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, we're more than a global ecommerce leader — we’re changing the way the world shops and sells. Our platform empowers millions of buyers and sellers in more than 190 markets around the world. We’re committed to pushing boundaries and leaving our mark as we re-invent the future of ecommerce for enthusiasts.

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.

Advertising is one of the fastest growing areas in eBay, defining the future of ecommerce. As sellers shift budgets from traditional channels to ecommerce platforms like eBay, we have a unique opportunity to innovate and lead. Our Ads team builds ML and GenAI services to empower sellers and optimize ad campaigns, surfacing high quality items for buyers and driving business growth.

We are a highly result-oriented and agile team, committed to delivering impact at scale. We embrace a fast-learning, fail-fast, and fail-better mindset—constantly iterating, experimenting, and improving to drive innovation and business outcomes.

As an Applied Researcher within our Advertising team, you will play a pivotal role in developing advanced machine learning and generative AI models to guide sellers and power the next generation of ads products. You will work with large-scale data and state-of-the-art LLMs to deliver actionable insights and innovative ad experiences. Your work will directly impact our guidance systems, enhance ad performance, and deliver value for our sellers. You will also drive innovation by applying GenAI to create new ad experiences and solutions.

What you will accomplish

• Machine Learning & GenAI Development: Design, implement, validate, and deploy machine learning models tailored to advertising applications. Leverage LLMs to build systems that provide actionable guidance and innovative ad experiences.
• Data Understanding: Analyze large volumes of production data to produce business insights and identify opportunities for ML and GenAI solutions.
• Cross-functional Collaboration: Work closely with product managers, engineers, and other researchers to integrate ML and GenAI insights into our advertising products. Ensure our seller guidance systems are aligned with user needs and business goals.
• Innovation and Research: Stay at the forefront of GenAI, LLMs, and advertising technologies. Contribute to internal and external research communities by publishing findings, attending conferences, and participating in collaborative projects.

What you will bring

• Education: Ph.D. or M.S. in Computer Science, Statistics, Mathematics, or a related field with a focus on machine learning, data science, or generative AI.
• Experience: 5+ years in applied research or development of data analysis, traditional machine learning and generative AI models, with hands-on experience building and deploying these models in real-world applications, preferably with the advertising industry or a closely related field, i.e. search, recommendation system and NLP.
• Technical Proficiency: Strong programming skills in Python, Java or C/C++. Expertise in ML frameworks (TensorFlow, PyTorch), and experience with big data technologies (Hadoop, Spark).
• Analytical Skills: Outstanding ability to analyze large datasets, identify trends, and derive actionable insights. Expertise in data mining, segmentation, and SQL.
• Communication: Excellent verbal and written communication skills, with the ability to work effectively with diverse, international teams and convey sophisticated technical concepts to non-technical partners.

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