The Financial Crimes Technology team at Cash App finds and reports financial crimes activity across Cash App and Seller tools. We work globally with partners in business, engineering, counsel and product to guarantee we are providing a safe user experience for our customers while minimizing or eliminating bad activity on our platform.

We are leveraging Machine Learning as an integral part of our toolkit to fulfill our mission. As Cash App scales, we are monitoring hundreds of billions of dollars in transactions across traditional payment and blockchain networks. We uncover and put an end to money laundering, fraud, and illegal activities before they impact our users. Additionally, we improve workflow and case tools, adding features that empower agent productivity and automate the high volume of monitoring.

 You will:

• Build classification and anomaly detection models to detect criminal & suspicious activity across Cash App’s p2p, banking, debit card, equities and crypto products
• Develop customer risk rating models that facilitate efficient KYC reviews at onboarding and ongoing basis for CashApp accounts. 
• Leverage innovative features and state of the art algorithms like Language Models & Graph Neural Networks to drive down false positives & improve agent productivity across Transaction Monitoring, and Sanctions queues
• Join a new,  small, and growing team and have a significant impact on team culture and direction
• Use Python (numpy, pandas, sklearn, xgboost, Pytorch, TensorFlow, keras, plotnine etc.), MySQL, Snowflake, GCP, AWS for developing models

You Have: 

• 4+ years of Machine Learning and Deep Learning experience
• A graduate degree in computer science, data science, operations research, applied math, stats, physics, or a related technical field
• Experience with advanced techniques like word embeddings, sequence modeling, and graph convolutional networks is a big plus
• Experience working with product, business, and engineering to prioritize, scope, design, and deploy ML models
• Be able to communicate with business stakeholders
• Have a curious, passionate, growth-oriented mindset

We’re working to build a more inclusive economy where our customers have equal access to opportunity, and we strive to live by these same values in building our workplace. Block is a proud equal opportunity employer. We work hard to evaluate all employees and job applicants consistently, without regard to race, color, religion, gender, national origin, age, disability, pregnancy, gender expression or identity, sexual orientation, citizenship, or any other legally protected class. 

We believe in being fair, and are committed to an inclusive interview experience, including providing reasonable accommodations to disabled applicants throughout the recruitment process. We encourage applicants to share any needed accommodations with their recruiter, who will treat these requests as confidentially as possible. Want to learn more about what we’re doing to build a workplace that is fair and square? Check out our I+D page. 

Additionally, we consider qualified applicants with criminal histories for employment on our team, and always assess candidates on an individualized basis.

Block, Inc. (NYSE: SQ) is a global technology company with a focus on financial services. Made up of Square, Cash App, Spiral, TIDAL, and TBD54566975, we build tools to help more people access the economy. Square helps sellers run and grow their businesses with its integrated ecosystem of commerce solutions, business software, and banking services. With Cash App, anyone can easily send, spend, or invest their money in stocks or Bitcoin. Spiral (formerly Square Crypto) builds and funds free, open-source Bitcoin projects. Artists use TIDAL to help them succeed as entrepreneurs and connect more deeply with fans. TBD54566975 is building an open developer platform to make it easier to access Bitcoin and other blockchain technologies without having to go through an institution.