Senior Software Engineer (Backend), Customer Directory Platform

  • Seattle, WA
  • Employees can work remotely
  • Full-time
  • Alternate Location: New York, United States

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

The Customer Engagement team’s mission is to help merchants grow their businesses by giving them the tools to know, support, engage, and acquire their customers. Our product suite includes CRM, omni-channel marketing (e.g. email, social, advertising), feedback and messaging, loyalty and rewards. We’re looking for strong engineers to help build the next generation of our Customer Platform which is used by Square and third party developers to build their products & grow merchants' business.

You Will:

  • Design and build new features that enable merchants to better understand and serve their customers

  • Deliver APIs that make it easy for developers to interact with customer data

  • Work cross-team to build features like card on file, buyer graph

  • Build systems that analyze and improve customer data quality for Square’s sellers

  • Devise solutions to performance and scalability challenges as our customer data set continues to grow

  • Build for the future by clearly communicating the cost-benefit of a given solution and advocating for the best path forward

  • Visit merchants to see the product(s) in action

  • Embrace opportunities to stretch yourself by learning new technologies


You have:

  • 5+ years of software development experience 

  • Experience in designing and productionizing large-scale distributed systems 

  • Experience with complete development cycle from product definition to delivery

  • Excellent skills with data modeling and data management

  • A passion for leveraging your critical thinking, problem solving and analytical skills to deliver remarkable solutions to your customers

  • The ability to thrive in a collaborative environment involving different stakeholders and subject matter experts

Even Better:

  • Experience with cloud computing platforms, such as AWS, Google Cloud or Azure

  • Knowledge of or experience applying machine learning models 

Technologies we use and teach:

  • Go, Java

  • MySQL, BigQuery, Elasticsearch

  • Google Cloud, AWS

  • Dataflow, TensorFlow

Additional Information

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. Square 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.


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

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.

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