Principal Software Engineer, Platform Automation

The Team

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.

Our Square Quality Automation team plays a critical role in ensuring the quality, reliability, and efficiency of Square’s mobile, web, and hardware platforms. We focus on empowering developers and test engineers by streamlining the test and development process across multiple platforms.

We are looking for a Software Engineer who can design and develop large-scale test automation frameworks for mobile and web platforms. In this role, you will help accelerate the shipment of software by seamlessly integrating these frameworks into our CI/CD processes. Your work will enable Square engineers to deliver high-quality software faster and with greater confidence.

In this role, you will take ownership of the entire development stack as it relates to testing and quality, including build systems, tools, dashboarding, testing frameworks. You will focus on identifying and addressing performance bottlenecks within both the product and development processes, while building highly scalable solutions to enhance system reliability and ensure smooth CI integrations. By doing so, you will help deliver more reliable products to our customers and significantly boost the engineering team's productivity across the company.

You will:

• Develop and optimize automated testing infrastructure that spans mobile (iOS and Android), web, and real hardware environments, improving the development process and reducing friction for developers.
• Innovate to amplify the efficiency of our mobile and web developers by optimizing testing tools, build systems, and CI pipelines.
• Identify and address critical performance bottlenecks in both the product and the development and testing workflows, including build times, testing frameworks, and IDE integrations.
• Collaborate with Product Delivery, Quality Systems, and Developer Experience teams to deliver efficient automated tests that mirror real-world scenarios, ensuring that our products meet the highest quality standards.
• Prioritize and streamline development and testing processes to allow engineers to build, test, and release features quickly and effortlessly.
• Contribute to the overall quality automation footprint by developing solutions that scale across all Square platforms, including Point of Sale applications and other Square products.

You Have:

• 10+ years of test engineering and/or software engineering experience, preferably on  mobile and web products.
• Ability to design and develop tools and test automation frameworks for Mobile (iOS or Android) & Web platform automation frameworks
• Proficient  in Java, Kotlin, Python or any programming language. 
• Familiarity with build systems (e.g. Ant, Maven, Buck, Gradle, Pants) and CI tools (e.g. Circle, Travis, Jenkins) 
• Experience with supporting build or CI systems infrastructure (ideally at scale) 
• Excellent software engineering aptitude and the ability to provide technical mentorship and guidance
• Motivation to influence our engineering organization to level-up the reliability and performance of the mobile and web apps we ship.
• Prior experience in large scale multi quarter to year long projects.

Nice to have:

• Tools skill XCUI test, swift, Kotlin, Trade Federation, UI Automator, Xcode, Playwright
• Experience in working and developing tests with emulators and on hardware platforms
• Experience optimizing and designing large scale performance tests for Android and iOS applications
• Experience working in a large engineering organization (hundreds of engineers)

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. Block is an equal opportunity employer evaluating all employees and job applicants without regard to identity or any legally protected class. We also consider qualified applicants with criminal histories for employment on our team, and always assess candidates on an individualized basis.

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. Want to learn more about what we’re doing to build a workplace that is fair and square? Check out our I+D page.

Block will consider qualified applicants with arrest or conviction records for employment in accordance with state and local laws and “fair chance” ordinances.