Sr. Data Scientist

Key Skills

Java Programming, Analytical and Problem solving, Python Programming, Framework, SQL, Agile methodologies, Big Data Technology, Apache Hadoop, Scala Programming, Natural Language Processing (NLP), Apache Hive, R Programming, SPARK Programming, Neural Networks, SAS

Job Description

Looking for a company that inspires passion, courage and creativity, where you can be on the team shaping the future of global commerce? Want to shape how millions of people buy, sell, connect, and share around the world? If you’re interested in joining a purpose driven community that is dedicated to crafting an ambitious and inclusive work environment, join eBay – a company you can be proud to be with.

Risk Management is at the core of Payments done well – and we are hiring curious, driven, and courageous experts to transform our business unit to enable eBay's next generation Payments strategy. Our focus is to ensure the integrity of our marketplace for buyers and sellers who transact with us every single day. The scope of our charter includes Risk Management Strategy, Policy, Decision Sciences, and Policy Operations.

We are looking for a highly talented and self-motivated data scientist to join our Decision Science team. Decision Science contains both data scientists and software engineers responsible for creating and implementing state of the art machine learning algorithms for fraud detection and risk assessment in support of Risk Management. The primary responsibility of this role is to assist in algorithm development inside of a high throughput, low latency, big data environment.

Primary Job Responsibilities

The senior data scientist will support the risk department, leveraging big data technologies to aggregate and structure data, perform statistical analysis, and build algorithmic solutions to reduce fraud, monitor our buyers and sellers, and intermediate payments to improve the overall eBay experience.

As a member of the decision science team, you will

• Research and develop new methodologies and techniques to improve the overall effectiveness of risk management.
• Mine and analyze massive amount of unique internal and external data to gain deep business knowledge and insight on customer activity and usage behaviors and their relationships with fraud, credit risks, and other types of behaviors.
• Acts as the technical owner of projects that may require significant customization of existing analytic tools, techniques, processes or development of new ones.
• Perform statistical data analysis and understanding, ensure data quality, and develop tracking and reporting systems to determine the effectiveness of models, rules, and other risk initiatives and programs.
• Design and create systems to structure, aggregate, and turn petabytes of messy information into statistically significant features for modeling purposes.
• Problem sets are focused around account security, fraud and risk management to include models to prevent fraudsters from listing and monetizing on the platform, thwarting registration attacks, and risk scoring our customers.

Required Skills and Experience:

• Bachelor’s degree in a quantitative field: engineering, math, statistics etc. MS/PHD preferred
• MS + 7, PHD + 4 years minimum
• Expert in SQL, relational databases
• Big Data technology: Hadoop framework: Hive, Spark, etc.
• Expertise in machine learning packages Python, R,SAS
• Strong knowledge of 1 or more scripting and programming languages (Python, Java, Scala, etc.)
• Background in a variety modeling techniques: GBM, logistic regression, clustering, neural networks, NLP
• Strong analytical skills with good problem solving ability
• Good presentation and communication skills required

Benefits are an essential part of your total compensation for the work you do every day. Whether you’re single, in a growing family, or nearing retirement, eBay offers a variety of comprehensive and competitive benefit programs to meet your needs. Including maternal & paternal leave, paid sabbatical, and plans to help ensure your financial security today and in the years ahead because we know feeling financially secure during your working years and through retirement is important.

Here at eBay, we love creating opportunities for others by connecting people from widely diverse backgrounds, perspectives, and geographies. So, being diverse and inclusive isn’t just something we strive for, it is who we are, and part of what we do each and every single day. We want to ensure that as an employee, you feel eBay is a place where, no matter who you are, you feel safe, included, and that you have the opportunity to bring your unique self to work. To learn about eBay’s Diversity & Inclusion click here

eBay Inc. 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 are unable to submit an application because of incompatible assistive technology or a disability, please contact us at

We will make every effort to respond to your request for disability assistance as soon as possible. Jobs posted with location as Remote - United States (Excludes CO, HI, NM) excludes Colorado, Hawaii and New Mexico.