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Sr. Staff Software Engineer, Pay Group Engineering

Gusto

$189,000 - $278,000
Dec 16, 2025
San Francisco, CA, US • Denver, CO, US • New York, NY, US • Seattle, WA, US • Los Angeles, CA, US • Remote, US
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Gusto is looking to solve the complex and highly regulated problem of payroll, taxes, and compliance for small businesses. The company aims to simplify these processes for business owners so they can focus on their core operations.

Requirements

  • Experience in designing and developing robust, distributed systems using multiple general-purpose programming languages
  • Experience influencing and guiding the work of multiple teams on scaling, refactoring, and optimizing legacy products
  • Experience architecting, building, and testing large-scale production level code
  • Experience building fault-tolerant, mission-critical software
  • Experience building products in highly regulated domains is desired, but not required
  • Experience in one of these domains is preferred: Payroll, Taxes, or Compliance
  • Familiar with current AI tools (LLMs, Cursor, Copilot, Agents) and their shortcomings / benefits

Responsibilities

  • Design, build, and test the foundation that supports compliant payroll for millions of people
  • Help scale one of the largest Ruby/Rails and TypeScript/React applications in the world
  • Collaborate on complex and ambiguous problems with partnerships from Engineering, Product Management, Design, Data Science, Compliance, Operations, and other cross-functional teams
  • Build the software platform that powers multiple 1st and 3rd party products and serves millions of businesses
  • Mentor and grow fellow engineers working to create holistic and scalable solutions
  • Drive the product development process from concept to launch, delivering delightful products that make payroll, taxes, and compliance simple and easy
  • Improve the productivity and happiness of our teams with the services, tools, and APIs you build

Other

  • Successful applicants have at least 12+ years of experience
  • Travel to Gusto’s Denver office for onboarding is required for this position
  • Employees based in Denver, San Francisco, and New York City are expected to work from the office on designated days approximately 2-3 days per week
  • A secure, reliable, and consistent internet connection is required when working from a location other than a Gusto office
  • Ability to communicate technical complexity and help facilitate informed tradeoffs