Staff Software Engineer — React/Rails (GraphQL)

The Briefed; San Francisco (CA); Hybrid; USD 180,000 - 280,000; Full time

Benefits offered by this job

RSUs

Healthcare, dental, and vision

401(k) retirement plans

Flexible PTO

Hybrid work model

Job summary

Gusto is seeking a Staff Software Engineer for the Expansion Experiences team in a hybrid setup in San Francisco. You will own end-to-end features that help small businesses discover and adopt more of Gusto’s offerings, including plan upgrades and new integrations.

You will design and implement scalable backend APIs, robust frontend experiences, and drive experiments to measure impact on conversions and retention. Mentoring and AI-enabled development are key parts of the role.

Qualifications

• 8+ years of professional software development experience.
• Proven track record of owning multi-quarter projects that drive measurable customer impact at scale.
• Experience with large-scale refactoring, performance optimization, and maintaining high reliability across full-stack applications.

Responsibilities

• Design, build, and test end-to-end features across product recommendations, nurture campaigns, booking flows, and plan upgrade/retention flows.
• Run structured experiments (A/B testing, phased rollouts) to measure and optimize conversion, feature adoption, and customer retention.
• Build reliable, scalable backend APIs and data models that support personalization engines, product recommendations, and multi-step customer journeys.
• Mentor engineers, elevate code quality standards, and champion responsible use of AI tools across development workflows.
• Partner with Product, Design, Data, and Platform Engineering to translate customer pain points into scalable launches.

Skills

Ruby on Rails

React

GraphQL

TypeScript

AI tooling

Job description

Gusto is seeking a Staff Software Engineer for the Expansion Experiences team in a hybrid setup in San Francisco. You will own end-to-end features that help small businesses discover and adopt more of Gusto’s offerings, including plan upgrades and new integrations.

You will design and implement scalable backend APIs, robust frontend experiences, and drive experiments to measure impact on conversions and retention. Mentoring and AI-enabled development are key parts of the role.