Senior Software Engineer, Continuous Integration Infrastructure

  • 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

The CI Infrastructure team strives to enable our engineers to test and release their applications as efficiently as possible. Our role is to design, implement, and manage a solution to lower the friction of developing in a service-oriented architecture through the use of cloud computing and container technologies like Kubernetes & methodologies such as Continuous Deployment.

Engineers on our team should feel at home working in and around a broad swath of technologies, and understanding the day-to-day frictions of development work your colleagues face. You'll be working with Engineers across the company to eliminate bottlenecks and develop complementary solutions that allow developers to move faster. You enjoy building new systems from the ground up as much as you love tweaking existing systems to achieve maximum performance.

The team regularly works with open source projects and tools and we contribute back as well. Our main CI application, Kochiku, was built in-house and open sourced. Check out Square's full list of open source projects at

You Will:

  • Communicate with engineering teams to determine pain points in the development process.

  • Design, develop, and deploy scalable solutions that speed up our Continuous Deployment solution.

  • Contribute to monitoring, stability, and security of existing services.

  • Communicate technical designs in writing and in person to multiple technical audiences.

  • Participate in on-call rotation for issues with CI systems.


Must haves:

  • Experience building CI/CD for platform 

  • Bachelor’s degree or relevant technical experience (5+ years minimum)

  • Experience working with and deploying applications in Linux containers (Docker, Mesos, etc)

  • Solid experience and skills with the Linux/Unix command line and tools

  • Experience developing in at least one of Ruby, Java, Python and/or Go 

  • Proficient in unit and integration testing paradigms.

  • Strong communication skills

  • A desire to continue learning

  • A personal commitment to quality

Growth Opportunities:

  • Act as a strength multiplier to product engineering efforts.

  • Learn about every technology stack used at Square.

  • Work at the intersection of the social and the technical, with growth opportunities in both.

Technologies We Use:

  • Primary languages: Ruby, Bash

  • Secondary languages: Java, Go

  • Operating Systems: Linux, OSX

  • Configuration Management: Chef

  • Other: Ruby on Rails, AWS, Google Cloud, Kubernetes, Docker

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