FlexHired LogoFlexHired
Logo of Gusto, Inc.

Gusto, Inc.

Sr. Staff Software Engineer, Payroll and Tax

Job Summary

This role involves designing, building, and testing scalable and compliant payroll systems supporting millions of users. Candidates will collaborate across teams to deliver complex software solutions, mentor engineers, and influence system architecture. The position requires extensive experience with large-scale, distributed applications and expertise in programming languages like Ruby, TypeScript, and React. The focus is on improving existing systems and creating future-ready, reliable payroll and tax processing platforms within a highly regulated domain.

Required Skills

React
Technical Communication
Cross-functional Collaboration
Software Development
Distributed Systems
System Design
TypeScript
Regulatory Compliance
Mentoring
API Development
Code Testing
Ruby on Rails
Legacy System Refactoring
Fault-Tolerant Software

Benefits

Health Insurance
Paid Time Off
401(k)
Stock Equity

Job Description


About Gusto

Gusto is a modern, online people platform that helps small businesses take care of their teams. 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.

Our mission is to create a world where work empowers a better life, and it starts right here at Gusto. That’s why we’re committed to building a collaborative and inclusive workplace, both physically and virtually. Learn more about our Total Rewards philosophy.

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. If you’re interested in building elegant software with far-reaching effects in our modern economy, join us!

About the Team:

Payroll is the beating heart of Gusto’s business. The Payroll and Tax team is 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. The domain is highly complex and offers the opportunity to engage in system design that simplifies this for customers, both internal and external.

Teams within Payroll & Tax

  • Tax Accuracy: The Tax Accuracy group is responsible for gathering and maintaining the necessary information for us to pay and file taxes accurately and on time for our customers, and consists of multiple teams that cover various parts of the process.
  • Ledger: This team is building a payroll ledger to track accrual accounting for payroll-related money movement. This team is starting to support the payroll domain, risk, payments, and accounting.
  • Engine: This team works closely with the payroll compliance team to ensure enablement of compliant pay, such as minimum wage adjustments, regular rate of pay, etc. We enable end-to-end success of payroll processing and working with various domain teams such as tax calculations, tax setup, payments, and more.
  • Platform: This team is developing a new platform to be the common interface for interacting with payroll and tax data. The payroll and tax domain is highly complex; our team exists to make it easier for other application teams to interact with the payroll and tax system.

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

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
  • Enthusiasm for a collaborative, test-driven environment
  • 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

Please note that travel to Gusto’s Denver office for onboarding is required for this position. If you have any questions regarding this requirement, please share with your recruiter.

Our cash compensation amount for this role is targeted at $191,000/yr to $240,000/yr in Denver & most remote locations, and $225,000/yr to $275,000/yr for San Francisco, Seattle & New York. Stock equity is additional. Final offer amounts are determined by multiple factors including candidate experience and expertise and may vary from the amounts listed above.


Gusto has physical office spaces in Denver, San Francisco, and New York City. Employees who are based in those locations will be expected to work from the office on designated days approximately 2-3 days per week (or more depending on role). The same office expectations apply to all Symmetry roles, Gusto's subsidiary, whose physical office is in Scottsdale.

Note: The San Francisco office expectations encompass both the San Francisco and San Jose metro areas.

When approved to work from a location other than a Gusto office, a secure, reliable, and consistent internet connection is required.


Our customers come from all walks of life and so do we. We hire great people from a wide variety of backgrounds, not just because it's the right thing to do, but because it makes our company stronger. If you share our values and our enthusiasm for small businesses, you will find a home at Gusto.

Gusto is proud to be an equal opportunity employer. We do not discriminate in hiring or any employment decision based on race, color, religion, national origin, age, sex (including pregnancy, childbirth, or related medical conditions), marital status, ancestry, physical or mental disability, genetic information, veteran status, gender identity or expression, sexual orientation, or other applicable legally protected characteristic. Gusto considers qualified applicants with criminal histories, consistent with applicable federal, state and local law. Gusto is also committed to providing reasonable accommodations for qualified individuals with disabilities and disabled veterans in our job application procedures. We want to see our candidates perform to the best of their ability. If you require a medical or religious accommodation at any time throughout your candidate journey, please fill out this form and a member of our team will get in touch with you.

Gusto takes security and protection of your personal information very seriously. Please review our Fraudulent Activity Disclaimer.

Personal information collected and processed as part of your Gusto application will be subject to Gusto's Applicant Privacy Notice.

Interested in this job?

Application deadline: Open until filled

Logo of Gusto, Inc.

Gusto, Inc.

A platform offering payroll, benefits, and HR management services tailored for small and medium-sized businesses.

See more jobs
Date PostedJune 14th, 2025
Job TypeFull Time
LocationSan Francisco, CA; Denver, CO; New York, NY; Seattle, WA; Washington DC; United States - Remote
SalaryCompetitive rates
Exciting remote opportunity (requires residency in Canada, Colombia) for a Sr. Staff Software Engineer, Payroll and Tax at Gusto, Inc.. Offering competitive salary (full time). Explore more remote jobs on FlexHired!

Safe Remote Job Search Tips

Verify Employer Thoroughly

Research the company's identity thoroughly before applying. Check for a professional website with contacts, active social media, and LinkedIn profiles. Verify details across platforms and look for reviews on Glassdoor or Trustpilot to confirm legitimacy.

Never Pay to Get a Job

Legitimate employers never require payment for applications, training, background checks, or equipment. Always reject upfront payment requests or demands for bank details, even if they claim it's for purchasing necessary work gear on your behalf.

Safeguard Your Personal Information

Protect sensitive data like SSN, bank details, or ID copies. Share this only after accepting a formal, written job offer. Ensure it's submitted via a secure company system or portal, never through insecure channels like standard email attachments.

Scrutinize Communication & Interviews

Watch for communication red flags: poor grammar, generic emails (@gmail), vague details, or undue pressure. Be highly suspicious of interviews held only via text or chat apps; legitimate companies typically use video or phone calls.

Beware of Unrealistic Offers

If an offer's salary or benefits seem unrealistically high for the work involved, be cautious. Research standard pay for similar roles. Offers that appear 'too good to be true' are often scams designed to lure you into providing information or payment.

Insist on a Formal Contract

Always secure and review a formal, written job offer or employment contract before starting work or sharing final personal details. Ensure it clearly defines your role, compensation, key terms, and conditions to avoid misunderstandings or scams.

Related Jobs

Full Time
San Francisco, CA; Denver, CO; New York, NY; Remote; Ontario, CAN - Remote

Subscribe Newsletter

Never miss a remote job opportunity. Subscribe to our newsletter today and receive exclusive job alerts, career advice, and industry insights delivered straight to your inbox.