Senior Security Data Engineer

Membership Platforms, Identity Abuse Prevention Engineer

It takes powerful technology to connect our brands and partners with an audience of 1 billion. Nearly half of Yahoo employees are building the code and platforms that help us achieve that. Whether you're looking to write mobile app code, engineer the servers behind our massive ad tech stacks, or develop algorithms to help us process 4 trillion data points a day, what you do here will have a huge impact on our business-and the world. Want in? Our brands like Yahoo, TechCrunch and more help people stay informed and entertained, communicate and transact, while creating new ways for advertisers and partners to connect. With technologies like XR, AI and machine-learning, we're transforming media for tomorrow, too. We're creators and coders, dreamers and doers creating what's next in content, advertising and technology.

Membership Platforms at Yahoo provide modern, secure identity offerings for consumers and businesses that interact with Yahoo systems. The scale at which the identity systems operate is unmatched on the internet, with billions of logins per day, reaching hundreds of millions of users. We power the best products on the internet and bring users together to form communities and follow the news that matters to them.

The Data Science and Security team within Membership Platforms leverages big data and machine learning to keep our users safe using a combination of online and offline processes. We analyze dozens of passive and active signals to distinguish humans from bots and other bad actors. Our machine learning models drive security features in sign-in, account recovery, and more.

• Working closely with the Paranoids (Security) team to develop innovative ways to detect and block abusive registrations and fraudulent logins

• Investigating account abuse, account hijacking, credential stuffing, and other malicious activity to identify and disrupt adversaries, both criminal and government-backed

• Analyzing log data to identify trends or perform forensic analysis

• Developing and training machine learning models to distinguish real traffic from bot traffic

• Designing and prioritizing solutions for new systems and features, and participating in design review discussions

• Writing high quality and performant code, unit tests, functional tests, and documentation to implement new features

• Debugging code when it's not doing what you expect

• Reviewing fellow teammates' code

• Participating in weekly scrum team planning meetings and daily stand-ups

Required Skills/Experience

• A bachelor's degree or equivalent work experience in computer science, cybersecurity, or similar technical field

• Software development ability in Python and Java in a Unix/Linux environment

• Experience with ETL workflow processes and tools

• Experience creating and maintaining data pipelines

• Strong communication and collaboration skills

• Strong analytical and problem solving skills

• Strong time management and prioritization skills

Preferred Education/Experience

• 5+ years experience in data science, data engineering and/or software engineering roles

• Technical leadership experience

• Experience in abuse prevention and/or fraud detection

• Experience implementing solutions for data transformation, management, governance

• Experience with Splunk, Hadoop, Hive, PySpark, Oozie, SQL

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Yahoo is proud to be an equal opportunity workplace. All qualified applicants will receive consideration for employment without regard to, and will not be discriminated against based on age, race, gender, color, religion, national origin, sexual orientation, gender identity, veteran status, disability or any other protected category. Yahoo is dedicated to providing an accessible environment for all candidates during the application process and for employees during their employment. If you need accessibility assistance and/or a reasonable accommodation due to a disability, please submit a request via the Accommodation Request Form () or call 408-336-1409. Requests and calls received for non-disability related issues, such as following up on an application, will not receive a response.

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US Only: Please be aware that Yahoo requires all employees entering a U.S. Yahoo office and/or attending a company event (including client events) are required to be vaccinated for COVID-19. This position will require the successful candidate to obtain and show proof of a vaccination to enter a U.S. Yahoo office and/or attending a company event (including client events). Yahoo is an equal opportunity employer, and will provide reasonable accommodation to those individuals who are unable to be vaccinated consistent with federal, state, and local law.

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