Embedded Engineer, Android OS

  • San Francisco, CA, USA
  • Full-time
  • Current Square Employee?: Apply via go/jobs

Company Description

We believe everyone should be able to participate and thrive in the economy. So we’re building tools that make commerce easier and more accessible to all. We started with a little white credit card reader but haven’t stopped there. Our new reader helps our sellers accept chip cards and NFC payments, and our Cash app lets people pay each other back instantly. We’re empowering the independent electrician to send invoices, setting up the favorite food truck with a delivery option, helping the ice cream shop pay its employees, and giving the burgeoning coffee chain capital for a second, third, and fourth location. Let’s shorten the distance between having an idea and making a living from it. And make it easier for customers to shop and pay at their favorite businesses. We’re here to help sellers of all sizes start, run, and grow their business—and helping them grow their business is good business for everyone.

Job Description

Square’s Hardware Team builds the tangible connection to Square. We started with a simple and elegant Reader that turns any phone or tablet into a mobile point of sale - and we continue to lead this category with advances in chip card and NFC technology. Next, we introduced the Square Stand, the best way to turn your iPad into a counter top point of sale. Most recently, we expanded our HW portfolio with our first Android-based solution: Square Register, the first fully integrated point of sale that enables people to start selling right out of the box. 

As we introduce more products, we will meet the needs of more and more sellers with stand-out hardware products, globally. In this role, you will be developing the platform that powers Square’s hardware products. As part of the team, you’ll lead projects that involve collaboration with teams across Square and will help Square’s Hardware team realize its opportunity for growth.

You will:

  • Provide mentorship to engineers and cross-functional partners to improve engineering quality and increase team effectiveness
  • Lead cross functional development initiatives
  • Develop an Android software platform for unique mobile products
  • Design great code within the constraints and opportunities of powerful embedded platforms
  • Design and develop innovative, customized features and optimize Android system at the frameworks and security layer
  • Participate in all development phases from requirements phase to production
  • Collaborate on system-side code, communication protocol design, and kernel development on Linux/Android platforms
  • Actively participate in Agile practices (eg sprint planning, backlog grooming, and review)


You have:

  • 4+ years of development experience
  • Excellent interpersonal skills that enable effective communication and collaboration with a variety of stakeholders
  • Strong programming experience in Java or C software development, tools and debug with strong software development discipline
  • Experience in at least one other development language (Java or C, C++, Python)
  • Drive to write and ship production software
  • Experience leading, and/or desire to lead, development of large and complex systems
  • History of mentoring engineering teams member to raise technical standards and achieve business goals
  • BS in CS, CE, EE, or equivalent practical experience

Even better:

  • Experience on Android Framework & application level development
  • Experience porting Android to a new device
  • Understanding of the Android framework internals and AOSP code
  • Good understanding of AOSP build process
  • Firmware and embedded software development experience
  • Familiarity with the Linux operating system
  • Experience developing Linux Kernel extensions and device drivers
  • Experience shipping consumer electronics products

Check out Android @Square:

  • https://medium.com/square-corner-blog/advocating-against-android-fragments-81fd0b462c97
  • https://medium.com/square-corner-blog/android-spring-cleaning-tech-talks-ae2a2196e111
  • http://square.github.io/#android

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.