Staff Software Engineer, Growth (Revenue Enablement)

We're on a mission to grow the small business economy by handling the hard stuff , payroll, health insurance, 401(k)s, and HR , so owners can focus on their craft and customers.

We're looking for a seasoned full-stack software engineer to join Gusto's Growth team and lead the next generation of AI-powered customer acquisition, onboarding, and lifecycle engagement experiences.

Responsibilities

• Design, build, and operate AI-powered Growth experiences across onboarding and lifecycle engagement, focusing on conversational and communication-driven product surfaces.
• Own the technical strategy and implementation for an AI Voice Agent that helps onboard customers, including product workflows, backend integrations, safety controls, and evaluation loops.
• Build and scale AI-driven email systems across the funnel using ACE, including generation workflows, orchestration, experimentation, quality controls, and iteration based on product feedback and business outcomes.
• Partner with Product, Data, Design, Marketing, and Platform teams to understand customer pain points, identify Growth opportunities, prototype quickly, and ship improvements.
• Design reliable APIs, backend services, and frontend experiences that support personalized onboarding, communications, workflow automation, and other customer-facing Growth journeys.
• Establish strong engineering patterns for applied AI development, including prompt design, tool integration, evaluation-driven iteration, observability, and safe rollout practices.
• Help the team make good long-term architectural decisions around conversational systems, outbound communication workflows, and supporting platform capabilities.
• Mentor other engineers and raise the bar on technical execution, product quality, and responsible use of AI across the team.

Requirements

• 8+ years of software development experience building and shipping customer-facing product experiences at scale.
• Experience building full-stack systems, including frontend applications, backend APIs, and production services with clear ownership after launch.
• Experience in Growth-related product areas such as onboarding, communications, workflow automation, CRM, lifecycle marketing, or adjacent customer journey systems.
• Strong applied AI fluency, including experience with prompt design, tool integration, conversational experiences, content generation systems, or evaluation-driven iteration.
• Experience owning multi-quarter initiatives that solve ambiguous engineering problems and produce measurable business and customer impact.
• Strong product and engineering judgment, with the ability to balance experimentation speed with quality, reliability, and long-term maintainability.
• Ability to collaborate effectively across engineering and business stakeholders.
• A track record of mentoring engineers and helping teams scale their impact.

Nice to Have

• Experience in, or interest working in, Ruby on Rails.
• 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.

Benefits

• Competitive base pay.
• Benefits.
• Equity (RSUs).
• Work from office on designated days (approximately 2-3 days per week).

Salary

• $197,000–$247,000 for San Francisco & New York.
• Stock equity is additional.