Software Engineer, Customer Data Applications

  • San Francisco, CA
  • Full-time

Company Description

When we launched the little white reader, we invented mobile, ubiquitous payments and enabled anyone to start, run, and grow a business. Ten years and billions of transactions later we’re reimagining commerce for businesses of all types and sizes—we’re enabling the independent electrician to send invoices, helping the beauty salon pay its employees, and giving the burgeoning coffee chain capital for a second, third, and fourth location. 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

If you think about the story of Square, it's largely a story of a payments company that spawned an ecosystem of products related to commerce: Payroll, Capital, Appointments, Employee Management, Loyalty, Gift Cards and many more.  People come to Square for payments, but they stay for the integrated ecosystem.

The Customer Data Applications team is at the center of this and provides the scalable communication channels that connect this ecosystem of products to our payments customers.  What's unique is that instead of simply integrating with 3rd party marketing tools, we've taken a long view and built a Customer Data Platform that just happens to power marketing as the first use case.  Now that the system is up and running, we're starting to build and integrate a new ecosystem of products powered by data, including personalization and ML, analytics, segmentation, data governance, and warehousing just to name a few.

Furthermore, the team is unique in that we build most of our services on the Google Cloud platform therefore there are opportunities to become an expert in cloud tooling which is a valuable set of skills to have as the world moves towards the cloud.

As a member of our team, you will:

  • Help us architect the core Square wide data models that unify a number of distributed services.
  • Work with all product teams across Square to enable or build data integrations, client logging libraries and instrument events in other teams services.
  • Work with Marketing Operations team to either build or integrate tools to make marketing more automated and effective.
  • Work closely with our data science and machine learning teams to build event-based marketing triggers.
  • Design and build APIs and highly available services that deliver personalized, real-time content.
  • Build data pipelines and integrations that connect Squares services to cloud services and 3rd party tools.


You have:

  • 2+ years of software engineering experience
  • Demonstrated excellence in Python, Java or Ruby
  • A desire to be directly responsible for the lifecycle of engineering solutions.  This includes leading the design and implementation of projects and organizing the team to achieve a remarkable solution.
  • Experience designing and building APIs
  • A love of data, data munging and care about building the right abstraction
  • A strong desire to see your work have direct impact on the business

Nice to have:

  • Experience with Google Cloud Platform
  • Expertise with streaming technologies (Kafka, Pubsub, Kinesis) and log-based architectures and experience writing batch and stream processing jobs (i.e. Apache Beam, Google Cloud DataFlow, Apache Spark, Apache Storm)
  • Experience with ad tech, targeting, machine learning
  • Familiarity with marketing systems
  • [bonus] Front-end skills (javascript, react, design)

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 and always consider qualified applicants with arrest and conviction records, in accordance with the San Francisco Fair Chance Ordinance. 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. Perks At Square, we want you to be well and thrive. Our global benefits package includes: Healthcare coverage, Retirement Plans, Employee Stock Purchase Program, Meal reimbursements, Wellness perks, Paid parental leave, Flexible time off, Learning and Development resources