It all started with an idea at Block in 2013. Initially built to take the pain out of peer-to-peer payments, Cash App has gone from a simple product with a single purpose to a dynamic app, bringing a better way to send, spend, invest, borrow and save to our millions of monthly active users. With a mission to redefine the world's relationship with money by making it more relatable, available and accessible, at Cash App you'll have the opportunity to make a real-world impact with your career.

Today, Cash App has thousands of employees around the world with a culture geared toward creativity, collaboration and impact. We’ve been a distributed team since day one, and continue to value working across time zones and continents both remotely and in our Cash App offices.

Our offices are great, but many of our roles can be done remotely from the countries where Block operates. We tailor our experience to champion our employees’ creativity and productivity wherever they are. 

We’re looking for an experienced manager to lead Cash App’s Machine Learning Architecture team, which builds cutting edge machine learning infrastructure to redefine the world’s relationship with money. Cash ML uses our large and unique datasets to model, understand, and predict customer behavior to help optimize customer acquisition, engagement, retention, personalization, and more.

This is a vital role on the team with significant growth prospects, reporting directly to the Head of Applied ML and partnering with multiple ML modeling and engineering teams. You’ll have the chance to work across the complete machine learning lifecycle, including feature extraction, model hosting, A/B testing, and training, weaving our efforts in these areas together into an elegant, unified, and scalable architecture used by modelers and engineers across Cash App. We are looking for someone who is hungry to lead the development of large machine learning systems alongside talented modelers and engineers, as well as a strong architect who can create simple, reusable abstractions for performing complex machine learning tasks.  

You will:

• Recruit, lead, and mentor a strong team (current team size of 4, with future growth to 20+ planned)
• Design and evolve organizational structure and process to see the team to its next level of growth
• Shape Cash ML’s roadmap using an understanding of both business requirements and machine learning architecture
• Dive deeply with members of your team to provide coaching that ensures their success, providing hands-on technical guidance and direction in critical high-impact areas as needed
• Partner and collaborate closely with Cash App’s product and business leaders
• Work cross-functionally with product, platform, and data engineering teams to prioritize efforts that will bring your team’s work to life. Identify new opportunities, develop prototypes, achieve buy-in from partners, and communicate staffing needs
• Effectively communicate your team’s work to other senior leaders and the executive team on a regular basis
• Stay up-to-date with the latest state-of-the-art techniques in machine learning and foster a culture of learning within the organization
• Help shape Cash App’s ML and Growth strategies

You have:

• Experience leading teams both technically and in a formal management capacity. Experience growing teams from 5 to 15 or more is a plus
• Good communication skills and the ability to understand and synthesize requirements across multiple project domains
• Deep knowledge of and experience in end-to-end machine learning pipelines or architecture
• Well-developed software engineering fundamentals and the ability to write production code when needed (pairing sessions are a standard part of our management interview process)
• Strong statistical and mathematical intuition with an appreciation for concepts such as causality, selection bias, incrementality, hypothesis testing, etc.
• Intellectual curiosity and a passion for Cash App’s mission of economic empowerment

Technologies we use and teach:

• Python (and its machine learning and data analysis libraries/frameworks)
• Java
• AWS, Google Cloud
• SQL (Snowflake), Airflow, Tableau

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, veteran status, 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, assessing candidates in a manner consistent with the requirements of the San Francisco Fair Chance Ordinance.

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.