About

Gusto is a payroll, benefits, and human resource management software company serving businesses in the United States. Founded in November 2011 as ZenPayroll by Joshua Reeves, Tomer London, and Edward Kim, the company is headquartered in San Francisco.

Products
The platform spans payroll processing, employee onboarding (work authorization, direct deposit), health, dental, and vision insurance enrollment and administration, 401(k), and workers' compensation solutions.

Engineering
Gusto is a deeply Ruby on Rails shop. The company maintains a public Rubocop style guide (rubocop-gusto), Apollo Federation for Ruby (apollo-federation-ruby), Rails-specific testing tools (fixture_kit, ar-query-matchers for ActiveRecord query instrumentation), and a Buildkite DSL gem on GitHub.