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Machine Learning Engineer - Modeler, Risk

Company: Square, Inc.
Location: Vancouver
Posted on: February 24, 2021

Job Description:

  • Full-time
  • Alternate Location: Toronto, Canada
  • Current Square Employee?: Apply via go/jobs with your Square email. Company Description Square builds common business tools in unconventional ways so more people can start, run, and grow their businesses. When Square started, it was difficult and expensive (or just plain impossible) for some businesses to take credit cards. Square made credit card payments possible for all by turning a mobile phone into a credit card reader. Since then Square has been building an entire business toolkit of both hardware and software products including Square Capital, Square Terminal, Square Payroll, and more. We're working to find new and better ways to help businesses succeed on their own terms-and we're looking for people like you to help shape tomorrow at Square. Job Description As a Machine Learning Engineer within the Risk Machine Learning team, you work on projects that enable a software driven, machine learning centric view on all money movement and every transaction within the rapidly growing Square seller ecosystem. This touches on actively maximizing the trade off of revenue growth and risk using artificial intelligence. The machine learning driven software that we release interacts with every transaction and money movement within our seller ecosystem - a profound degree of scale and impact. Such machine learning techniques touch on reinforcement learning, decision theory, deep learning sequence modeling, and optimization theory. In addition, we also strive to provide our sellers, through seller facing products, with transparency around why our machine learning made a particular decision. This touches on algorithms in the relatively new space of explainable artificial intelligence. Our algorithms derive value from our unique and rich data from our entire product portfolio within our rapidly growing seller ecosystem. We partner with business, product, operations and engineering teams to drive optimal decision making systems using sophisticated modeling and machine learning. We're a passionate team of entrepreneurs, scientists, and engineers who are shipping machine learning software that actively actively manages Square's view on each transaction as it pertains to our revenue growth and risk. You Will Build machine learning/deep learning models that detect risk (credit or fraud) activity in real time across our Seller's ecosystem consisting of payments, banking and debit card products.-- You will leverage experimentation mindset along with state-of-the-art algorithms to drive down false positives, collaborate on new product features to drive losses down and explore new datasets (including 3rd party data) to engineer new features for risk models.-- Collaborate with business leaders, subject matter experts, and decision makers to develop success criteria and optimize new products, features, policies, and models Qualifications You Have An advanced degree (M.S., PhD.), preferably in Computer Science,Engineering, Statistics, Physics, Mathematics or a related technical field. PhD plus 2 years (or Master plus 4 years or Bachelor plus 6 years) industry working experience on applied Machine learning or Deep learning-- A strong track record of performing machine learning model development using Python (numpy, pandas, tensorflow, pytorch, scikit-learn, etc.) and SQL/NoSQL interaction patterns. Expert level knowledge of modern techniques in machine learning and deep learning, e.g., transformer network architectures, with an orientation to maximizing such algorithms in a large scale production setting. Reinforcement learning experience is a plus for developing optimal control policies Familiarity with Linux/OS X command line, version control software (git), and general software development principles with a machine learning software development life-cycle orientation. Machine learning strategic sequencing of methodological and software improvements to work back from maximizing core metrics associated with optimizing the business. The ability to clearly communicate complex results to technical and non-technical audiences and stakeholders (PMs, Operations, Engineers). Additional Information At Square, our purpose is to empower - within and outside of our walls. In order to build the best tools for the businesses and customers we support all over the world, we have to start at home with a workforce as diverse and empowered as our sellers. To this end, we take great care to evaluate all employees and job applicants equally, based on merit, competence, and qualifications. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, disability status, or any other characteristic protected by law. We encourage candidates from all backgrounds to apply. Applicants in need of special assistance or accommodation during the interview process or in accessing our website may contact us by sending an email to assistance(at) We will treat your request as confidentially as possible. In your email, please include your name and preferred method of contact, and we will respond as soon as possible.


    At Square, we want you to be well and thrive. Our global benefits package includes:
    • Healthcare coverage
    • Retirement Plans
    • Employee Stock Purchase Program
    • Wellness perks
    • Paid parental leave
    • Paid time off
    • Learning and Development resources

Keywords: Square, Inc., Vancouver , Machine Learning Engineer - Modeler, Risk, Engineering , Vancouver, Washington

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