Applied Researcher 1

At eBay were more than a global ecommerce leader were changing the way the world shops and sells. Our platform empowers millions of buyers and sellers in more than 190 markets around the world. Were 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. Were 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.

About the team and the role:
eBay Inc. is a global commerce leader that connects millions of buyers and sellers around the world. We exist to enable economic opportunity for individuals entrepreneurs businesses and organizations of all sizes. The Query Science team sits at the core of eBays Search product and is a key driver of search/query processing and revenue for the company.

We are a team of passionate professionals focused on making searching and buying on eBay as efficient and enjoyable as possible. By deeply understanding buyer intent and behavior we tailor our services to deliver an exceptional shopping experience and set new standards in e-commerce search. Our culture values creativity hard work innovation and a friendly fun and collaborative environment.

We are looking for an Applied Researcher to help build the next generation of query science products for eBay this role you will work on high-scale technically complex query processing challenges (such as query intent understanding entity resolution and tagging categorization query rewriting and knowledge graph applications) and play a critical part in redefining query understanding at eBay.

What you will accomplish:

• Design develop and deploy end-to-end machine learning and NLP solutions that significantly improve query understanding retrieval quality and buyer experience on eBay.

• Apply state-of-the-art techniques in NLP Embedding Based Retrieval (EBR) semantic search and LLMs to solve core e-commerce search problems such as query rewriting query annotation/classification and query recovery.

• Leverage large-scale user behavioral signals and eBays technical ecosystem to build practical scalable models that drive measurable improvements in search relevance and business metrics.

• Collaborate closely with cross-functional partners across Search Engineering Product and Analytics to define problems validate scientific approaches and deliver impactful features into production.

• Champion standard scientific methodologies and best practices within the organization influencing experimentation design evaluation and model governance across multiple teams.

• Share your work and learnings through technical presentations publications and participation in external forums and conferences helping to establish eBay as a leader in applied research for e-commerce search.

What you will bring:

• PhD in Computer Science Artificial Intelligence Information Retrieval or a related field (fresh grad welcome) or a Masters degree with 13 years of relevant industry experience focused on NLP or machine learning.

• Hands-on experience applying one or more of the following to real-world large-scale problems: classification regression NLP clustering deep learning/neural networks reinforcement learning or related ML techniques.

• Strong background in machine learning NLP and search-related technologies with demonstrated ability to translate research ideas into effective production-ready solutions.

• Proficiency in Python and at least one of Java Scala or C/C along with experience using modern ML frameworks and tools; familiarity with big data processing (e.g. Hadoop SQL Spark) is preferred.

• Excellent analytical and problem-solving skills with a creative and experimental mindset for tackling complex ambiguous challenges in query understanding.

• Strong written and verbal communication skills in English with the ability to explain technical concepts clearly to diverse audiences and collaborate effectively across teams and time zones.

Additional Details

The base pay range for this position is expected in the range below:

Base pay offered may vary depending on multiple individualized factors including location skills and experience. The total compensation package for this position may also include other elements including a target bonus and restricted stock units (as applicable) in addition to a full range of medical financial and/or other benefits (including RRSP eligibility various paid time off benefits such as PTO and parental leave). Details of participation in these benefit plans will be provided if an employee receives an offer of employment.

This job posting relates to an existing vacancy within eBay.

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 and disability or other legally protected you have a need that requires accommodation please contact us at. We will make every effort to respond to your request for accommodation as soon as possible. View our accessibility statement to learn more about eBays commitment to ensuring digital accessibility.

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