Staff Software Engineer, PEO Benefits

About the role

We're looking for seasoned full-stack software engineers to join Gusto’s PEO Benefits team. This is a rare greenfield scope inside a company with real scale and real customers. You get to make foundational architectural decisions, not maintain someone else's.

Responsibilities

• Design, build, and test the Gusto PEO Benefits experience - the benefits shopping and plan-recommendation flows, carrier integrations, MCP tools, agents that automate operational and customer support processes
• Mentor other engineers to help solve some of the hardest technical problems out there in very complex domains and at a large scale
• Help scale one of the largest Ruby/Rails and Javascript/React applications in the world
• Collaborate with our Product Management, Data, Design, and Platform Engineering teams to understand customer pain points, come up with solutions, and then prototype, iterate, and launch daily
• Build products that our customers genuinely love

Requirements

• 8+ years of software development experience
• PEO Expertise (Preferred): 3+ years of experience with PEO, with direct experience building PEO flows in a high-growth environment
• Experience owning multi-quarter projects that solve complex engineering problems and make measurable customer impact at scale
• Experience driving large, cross-functional projects end-to-end through ambiguity — scoping, sequencing, and unblocking without needing the problem pre-broken-down; aligning multiple stakeholders and working with multiple teams
• Leverage AI tools or systems to accelerate development, improve testing, and deliver new product capabilities
• Curiosity and experimentation with emerging AI frameworks, applying and sharing best practices to evaluate and scale AI use safely across teams
• Experience in, or interest working in, Ruby on Rails

Qualifications

• Appreciation for a collaborative, test-driven environment
• Ability to build well-structured, maintainable, well-documented code
• Ability to effectively communicate across engineering teams and with business stakeholders

Skills

• Strong problem-solving skills
• Experience with Ruby on Rails
• Experience with JavaScript/React
• Experience with backend API development
• Experience with carrier integrations
• Experience with PEO systems

Benefits

• Competitive base pay
• Benefits package
• Equity (RSUs)

Pay

The cash compensation amount for this role is targeted at $163,000–$204,000 in Denver & most remote locations, and $197,000–$247,000 for San Francisco & 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.

Schedule

Employees who are based in Gusto's physical office spaces in Denver, San Francisco, or New York City will be expected to work from the office on designated days approximately 2-3 days per week (or more depending on role).

Application Instructions

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