Sr. Staff Software Engineer, Pay Group Engineering

Sr. Staff Software Engineer, Pay Group Engineering

About Gusto

Gusto is a modern, online small business platform on a mission to grow the small business economy. On top of full-service payroll, Gusto offers health insurance, 401(k)s, expert HR, and team management tools. Today, Gusto offices in Denver, San Francisco, and New York serve more than 400,000 businesses nationwide, that’s why we’re committed to building a collaborative and inclusive workplace, both physically and virtually.

About the Role :

We’re hiring seasoned engineers to join our teams that work on core platform capabilities, improving our existing systems for extensibility and scalability, and building the future of Gusto's Payroll system. As a Gusto Software Engineer at this level, you’ll be guiding projects end-to-end by influencing initial feature specs, understanding how to take existing systems closer to desired end states, executing on projects, and maintaining code that powers core experiences.

About the Team :

Payroll is the beating heart of Gusto’s business. The Pay Group teams are responsible for the product, ops, and service components Gusto uses to onboard customers, process payrolls, calculate taxes & deductions, pay and file with tax agencies, and maintain compliance on behalf of the customers.

Contractors + EOR :

The Contractors + EOR team is building the best platform for businesses to hire, pay, and manage their entire workforce—whether they’re contractors, employees, or international teammates.

Payroll :

Payroll is the core of Gusto’s business, ensuring employees are paid accurately, on time, and in compliance with complex regulations.

Tax :

The Tax team ensures Gusto customers remain compliant and confident by managing every aspect of payroll taxes—including setup, calculation, payments, filings, and year-end communications.

Time :

The Time team builds trusted, intuitive tools that make it easy for businesses to schedule, track, and manage their teams.

Here’s what you’ll do day-to-day :

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.

Engage in a highly supportive environment

working with others to drive productivity and innovation

Own and drive the technical strategy and roadmap

for your domain in alignment with team and group-level OKRs

Identify and prioritize long-term investments

to improve foundational systems and architecture

Lead improvements

to incident response processes, tooling, and culture to enhance system reliability and team effectiveness

Here’s what we're looking for :

Successful applicants have at least 12+ years of experience

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

An aptitude and interest in bringing clarity and simplicity to complex and ambiguous problems

Ability to communicate technical complexity and help facilitate informed tradeoffs

Able to build maintainable, structured, well-documented 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

Bonus : Experience with Ruby on Rails, Typescript, and React

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