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PayPal

Data Scientist 2

PayPal
Ireland · Full-time · Not Applicable

The Company
PayPal has been revolutionizing commerce globally for more than 25 years. Creating innovative experiences that make moving money, selling, and shopping simple, personalized, and secure, PayPal empowers consumers and businesses in approximately 200 markets to join and thrive in the global economy.

We operate a global, two-sided network at scale that connects hundreds of millions of merchants and consumers. We help merchants and consumers connect, transact, and complete payments, whether they are online or in person. PayPal is more than a connection to third-party payment networks. We provide proprietary payment solutions accepted by merchants that enable the completion of payments on our platform on behalf of our customers.

We offer our customers the flexibility to use their accounts to purchase and receive payments for goods and services, as well as the ability to transfer and withdraw funds. We enable consumers to exchange funds more safely with merchants using a variety of funding sources, which may include a bank account, a PayPal or Venmo account balance, PayPal and Venmo branded credit products, a credit card, a debit card, certain cryptocurrencies, or other stored value products such as gift cards, and eligible credit card rewards. Our PayPal, Venmo, and Xoom products also make it safer and simpler for friends and family to transfer funds to each other. We offer merchants an end-to-end payments solution that provides authorization and settlement capabilities, as well as instant access to funds and payouts. We also help merchants connect with their customers, process exchanges and returns, and manage risk. We enable consumers to engage in cross-border shopping and merchants to extend their global reach while reducing the complexity and friction involved in enabling cross-border trade.

Our beliefs are the foundation for how we conduct business every day. We live each day guided by our core values of Inclusion, Innovation, Collaboration, and Wellness. Together, our values ensure that we work together as one global team with our customers at the center of everything we do – and they push us to ensure we take care of ourselves, each other, and our communities.

Job Description Summary:
The FSI Data Scientist will identify complex fraud patterns through data mining, machine learning, AI, graph data science, and the development of internal investigative software. Your research will seek to connect seemingly disparate fraud trends that are perpetrated by sophisticated threat groups and track them across the enterprise. This work supports PayPal’s Global Financial Crimes organization by enhancing fraud risk controls, recovering funds from networks of bad actors, and by furnishing timely intelligence data, at scale, to pinpoint abusive activity on the platform.

Job Description:
The FSI Data Scientist will identify complex fraud patterns through data mining, machine learning, graph data science, and the development of internal investigative software. Your research will seek to connect seemingly disparate fraud trends that are perpetrated by sophisticated threat groups and track them across the enterprise. This work supports PayPal’s Global Financial Crimes organization by enhancing fraud risk controls, recovering funds from networks of bad actors, and by furnishing timely intelligence data, at scale, to pinpoint abusive activity on the platform.

Your day to day will include:

  • Develop and deploy algorithms for linking, clustering, and pattern recognition based on various attributes.
  • Drive research and implementation of advanced methods in graph theory, community detection, and AI. Lead the design of graph based models.
  • Mentor team members on graph modeling, fraud detection techniques, and scalable data science practices.
  • Apply statistical methods for combining multiple data points to identify fraud patterns.
  • Create and select relevant features from raw data for use in FSI’s fraud linking framework.
  • Continuously improve the speed, reliability, and scalability of FSI tools.
  • Leverage partner teams’ investigative findings to rapidly deploy new fraud identification techniques.
  • Identify opportunities to extend FSI linking solutions with internal partners’ technology stacks for holistic fraud prevention.
  • Lead FSI’s engagement with PayPal’s data science and technology organizations.
  • Continually research new cutting edge technologies and AI that can be implemented to enhance products and processes


Required Skills:

  • Skilled in performing exploratory data analysis to identify patterns, trends, and anomalies.
  • Proficient in cleaning and preprocessing large datasets to ensure accuracy and consistency.
  • Strong SQL experience to create, maintain, and optimize complex queries and database structures.
  • Advanced proficiency in Python. Experience with libraries and tools for string processing and pattern recognition.
  • Knowledge of Machine Learning and latest AI technologies.
  • Understanding of financially motivated cybercrime trends and typologies.
  • Team player, energetic personality, curious, able to work efficiently in a fast paced, changing environment.


For the majority of employees, PayPal's balanced hybrid work model offers 3 days in the office for effective in-person collaboration and 2 days at your choice of either the PayPal office or your home workspace, ensuring that you equally have the benefits and conveniences of both locations.

Our Benefits:

At PayPal, we’re committed to building an equitable and inclusive global economy. And we can’t do this without our most important asset—you. That’s why we offer benefits to help you thrive in every stage of life. We champion your financial, physical, and mental health by offering valuable benefits and resources to help you care for the whole you.

We have great benefits including a flexible work environment, employee shares options, health and life insurance and more. To learn more about our benefits please visit https://www.paypalbenefits.com

Who We Are:

To learn more about our culture and community visit https://about.pypl.com/who-we-are/default.aspx

Commitment to Diversity and Inclusion

PayPal provides equal employment opportunity (EEO) to all persons regardless of age, color, national origin, citizenship status, physical or mental disability, race, religion, creed, gender, sex, pregnancy, sexual orientation, gender identity and/or expression, genetic information, marital status, status with regard to public assistance, veteran status, or any other characteristic protected by federal, state, or local law. In addition, PayPal will provide reasonable accommodations for qualified individuals with disabilities. If you are unable to submit an application because of incompatible assistive technology or a disability, please contact us at [email protected].

Belonging at PayPal:

Our employees are central to advancing our mission, and we strive to create an environment where everyone can do their best work with a sense of purpose and belonging. Belonging at PayPal means creating a workplace with a sense of acceptance and security where all employees feel included and valued. We are proud to have a diverse workforce reflective of the merchants, consumers, and communities that we serve, and we continue to take tangible actions to cultivate inclusivity and belonging at PayPal.

Any general requests for consideration of your skills, please Join our Talent Community.

We know the confidence gap and imposter syndrome can get in the way of meeting spectacular candidates. Please don’t hesitate to apply.

REQ ID R0126478

Key Skills

Ranked by relevance

ai machine learning data mining data analysis python sql
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Posted
Jun 19, 2025
Type
Full-time
Level
Not Applicable
Location
Dublin
Company
PayPal

Industries

Software Development Financial Services Technology Information Internet

Categories

Engineering Information Technology

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