Senior Software Engineer, Mobile Developer Experience

  • San Francisco, CA
  • Employees can work remotely
  • Full-time

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

Mobile Developer Experience (MDX) is responsible for building and providing all necessary infrastructure and tools to ensure Square’s mobile development can continue to be fast and efficient at scale.  We're looking for folks who are excited to problem solve and find solutions that empower hundreds of mobile developers to move more quickly than our competitors.

Engineering efficiency is particularly important for Square’s ability to continuously ship high quality software, so we strive to ensure our development tools enable developers to ship their features with speed and confidence. This is a high force multiplier, cross-functional team aiming to enhance the development experience for all mobile developers within Square. 

You will be part of the team responsible for owning the entire development stack (build system, build tools) and integration with CI. You will improve the development process to allow our engineers to ship as quickly and effortlessly as possible. You’ll be working primarily on the mobile platform infrastructure focused on our largest scaling codebase, Square’s Point of Sale applications, but we expect the results of the team’s work to be applicable to other Square applications.

What you will do:

  • Innovate to amplify the efficiency of our mobile developers to develop, build, test, and release high quality apps to our merchants.  

  • Identify key performance bottlenecks in the development experience including the build system, IDE integrations, testing frameworks, and pull request workflows.

  • Help define the scope and the priorities of the team by identifying opportunities to decrease build times, reduce system complexity, and improve the developer experience

  • Optimize the performance, reliability, and usability of our CI pipeline

  • Own the success of your team's projects, and deliver quantifiable results on schedule.


You have: 

  • BA/BS degree or equivalent practical, working experience

  • Extensive knowledge of build systems (e.g. Ant, Maven, Buck, Gradle, Pants) and CI tools (e.g. Circle, Travis, Jenkins) 

  • Experience for supporting build or CI systems infrastructure (ideally at scale) 

  • Excellent software engineering aptitude and the ability to provide technical mentorship and guidance

  • Experience building apps for Android in Java / Kotlin

Additional Information

At Square, we value diversity and always treat all employees and job applicants based on merit, qualifications, competence, and talent. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. We will consider for employment qualified applicants with criminal histories in a manner consistent with the requirements of 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.


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
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