Software Engineer, Product Security

  • Seattle, WA
  • Employees can work remotely
  • Full-time
  • Alternate Location: Atlanta, 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 Product Security organization identifies and mitigates unacceptable risk to Square’s products in order to protect our users. We engage in cross-functional collaboration across a wide range of organizations in order to implement security mechanisms into the company’s tech stack. We rely on data to scope problems, work with multiple teams to understand what solution will make the best impact, and drive the delivery from design to implementation.

We are excited to hire Application Security Engineers to secure Square’s codebase. In this role, you will design, build and integrate systems for static code analysis in pursuit of our mission to prevent implementation level security issues from posing a threat to our users.

You will:

  • Work within the team that builds top-of-the-industry static code analysis across our diverse technology stack and set of languages

  • Design, build and integrate tools and capabilities that make our systems more effective

  • Prevent implementation level vulnerabilities from being introduced into Square’s products

  • Automate remediation into the Software Development Lifecycle

  • Help our developers adopt safe practices and frameworks that eliminate entire classes of vulnerabilities

  • Serve other Infosec teams with static code analysis functionality for a variety of use cases



You have:

  • A deep desire to make technology more secure by solving classes of security problems

  • Software Development experience, preferably in Java, Go, Python, or Ruby

Even Better:

  • Interest or experience in Information Security and Application Security in particular

  • Knowledge around how to identify and mitigate web application and API vulnerabilities like in the “OWASP Top 10”


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.

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

Square, Inc. (NYSE: SQ) builds tools to empower businesses and individuals to participate in the economy. Sellers use Square to reach buyers online and in person, manage their business, and access financing. Individuals use Cash App to spend, send, store, and invest money. And TIDAL is a global music and entertainment platform that expands Square's purpose of economic empowerment to artists. Square, Inc. has offices in the United States, Canada, Japan, Australia, Ireland, Spain, Norway, and the UK.

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