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.

You will:

• Work closely with backend engineers on deciding requirements and specifications.

• Implement delightful web experiences that are clean, pragmatic, and visionary, and that directly and positively impact the efficiency of the many users of the data systems used throughout Square.

• Work with extraordinary engineers and an excellent data organization.

You have/are:

• Strong knowledge of, and experience with, modern HTML, CSS, JavaScript, and Ruby on Rails.

• Experience writing clean code with or without the assistance of preprocessors (e.g. Sass/Less, HAML/Slim, CoffeeScript) and libraries (e.g. jQuery, Underscore, Vue)

• Familiarity with a recent popular JS-app framework (e.g. Ember, Angular, React)

• Knowledge of computer science fundamentals, code organization, and modern best practices such as version control and code reviews.

• Experience testing your code (e.g. RSpec, QUnit, Mocha, Jasmine).

• An understanding of the principles of design, UI, and user experience.

• Comfortable straddling design, client-side, and server-side development, contributing to every aspect of the product experience.

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.